________________________________

ANALYTICAL LETTERS

Volume 32, Number 2, 1999

CONTENTS

Abstracts......................................................... ix

List of Contributors............................................... xxi

MINI-REVIEW

Sequential Simplex Optimization—An Update ................... 193
F. Walters


CHEMICAL AND BIO-SENSORS

Development of Oxygen Microsensors for Monitoring Cyano-
bacterial Photosynthesis in Roman Hypogea ......................... 213
D. Compagnone, V. Di Carlo, L. Bruno, P. Albertano, and
G. Palleschi


Electrocatalytic Oxidation of Uric Acid at Cysteine Modified
Glassy Carbon Electrode.......................................... 223
Z. Yan, J.-R. Zhang, andK-Q. Fang


Immobilization and Kinetic Study of Tyrosinase for Biosensor
Construction..................................................... 235
R. Tungel, T. Rinken, A, Rinken, and T. Tenno


Application of an Ion Pair Reagent to Biosensors ••••••••••••••••••••• 251
Y.-Q. Zhang, R.-A, Gu, W.-D. Shen, andX.-J. Zheng


Solid-State Planar Microsensors for Selective Potentiometric
Determination of Ethylmorphine ................................... 271
S. S. M. Hassan, E. M. Elnemma, andE. H. El-Naby


Amperometric Determination of Hydrogen Peroxide by
Utilizing a Sol-Gel-Derived Biosensor Incorporating an Osmium
Redox Polymer as Mediator........................................ 287
T.-M. Park

CONTENTS

Oxygen Insensitive Glucose Biosensor Based on PQQ-Dependent
Glucose Dehydrogenase........................................... 299
V. Laurinavicius, B. Kurtinaitiene, V. Liauksminas,
A. Ramanavicius, R. Meskys, R. Rudomanskis, T. Skotheim,
and L. Boguslavsky


Animmunosensor: Immobilization of Anti-HBs Antibody on
Glow-Discharge Treated Piezoelectric Quartz Crystal for HBs-Ag
Detection ........................................................ 317
S. Mutlu, R, Saber, C. Koqum, andE. Piskin


Performance ContrOI Strategics of One-Step Immuno-Chromato-
graphic Assay System for Salmonella typhimurium ................. 335
S,-H. Pack, C.-W. Lee, S.-H. Yook, O.-H. Kwon, and Y.-N. Park

PHARMACEUTICAL ANALYSIS


Analysis of Zinc Undecenoate and Undecenoic Acid in Athlete's
Foot Cream...................................................... 361
K.-O.ChuandK.-C,Tin


Simultaneous Determination ofNaphazoline Nitrate and Tetra-
mcthylthionine Base in Eye Drops by First-Derivative UV Spectro-
photometry....................................................... 373
J. Joseph-Charles andM, Bertucat


Modified H-Point Standard Addition Method and Logarithmic
Function for the Spectrophotometric and Spectrodensitometric
Determination ofHesperidin and Diosmin in Mixtures •••••••••••••••• 383
A. El Bayoumi


ENVIRONMENTAL ANALYSIS

Chemiluminescence Determination of Sulfur Dioxide in Air Using
tris(l,10-Phcnanthroline)ruthenium-K10(4) System..................... 401
Z He, K Wu, H. Meng, L Yuan, Q, Luo, and Y. Zeng

SPECTROMETRY

Determination of Rare Earth Impurities in High Purity Zirconium
Dioxide by Electrothermal Vaporization Inductively Coupled Plasma
Atomic Emission Spectrometry^Using l-Phcnyl-3-methyl-4-benzoyl-
5-pyrazone as Extractant and Chemical Modifier..................... 411
S. Chen, T. Peng, and Z Jiang


SEPARATIONS

Effect of the Amide Connecting Tether Type ofPirkle-Conccpt
Chiral Stationary Phases Derived from (S)-N-(3,5-Dinitrobenzoyl)-
leucine on Enantiomeric Separations ............................... 423
W. Lee

________________________________

________________________________

ANALYTICAL LETTERS

Volume 32, Number 4, 1999

CONTENTS

Abstracts......................................................... ix

List of Contributors............................................... xix
MINI-REVIEW

Analysis of Several Angiotensin-Converting Enzyme Inhibitors
Using Potentiometric, Enantioselective Membrane Electrodes.......... 623
H. K Aboul-Enein, R.-l. Stefan, and I F, van Staden


CHEMICAL AND BIO-SENSORS

Quantification of Urinary Oxalate with Alkylamine Glass Bound
Amaranthus Leaf Oxalate Oxidase.................................. 633
L. Goyal, M. Thakur, and C. S. Pundir


Capillary Optode: Determination of Mercury(ll) in Aqueous
Solution.......................................................... 649
B. Kuswandi and R. Narayanaswamy


Triphenyllead Chloride as a New lonophore for an Iodide-
Selective Membrane Electrode..................................... 665
T. Katsu and T. Hashimoto


Synthesis, Recognition, and Separation of Print Molecule in
Molecularly Imprinted Polymers ................................... 677
S.-Z. Zhan, Q. Dai, C.-W. Yuan, Z.-H. Lu, and
L. Haeussling


Copper(ll) Diethyidithiocarbamate Modified Carbon Paste
Electrode for Highly Selective Accumulation of Cysteine............. 689
S. X.Guo andS. B.Khoo


Enzymatic Flow-Injection Analysis of Metabolites Using New
Type of Oxygen Sensor Membranes and Phosphorescence
Phase Measurements.............................................. 701
A. N, Ovchinnikov, V. I. Ogurtsov, W. Trettnak, and
D. B. Papkovsky



PHARMACEUTICAL ANALYSIS

Intercalation ofPharmorubicin Anticancer Drug to DNA
Studied by Cyclic Voltammetry with Analytical Applications......... 717
X. Chu, G. Shen, J. Jiang, andR, Yu


Flow-Through Solid Phase U.V. Spectrophotometric Determi'-
nation ofAmoxycillin.............................................. 729
A. Ruiz Medina, M. L Fernandez de Cordova, and
A. Molina Diaz


CHEMOMETRICS

A Novel Algorithm of the Wavelet Packets Transform and Its
Application to De-noising of Analytical Signals....................... 743
X.ShaoandW.Cai

SPECTROMETRY

EPR Spectroscopy as an Alternative Analytical Method for
Copper Determination in Alcoholic Beverages........................ 761
B. R. McGarvey, M. S. Schultz, L. C. G. Vasconcellos,
C. W. B. Bezerra, andD. W. Franco


Rapid Determination of Toxic Elements in Finger Paints by
Microwave Assisted Acid Digestion and Atomic Spectrometry
Detection......................................................... 771
M. Guerrero, J.-L. Todoli, J. Mora, and A, Canals


The Determination ofMn(ll) in Water by Reversed Flow
Injection Spectrophotometry...................................... 787
H. Chen, D. Wei, T. An, and Y. Fang


BIOANALYTICAL

Direct Spectrophotometric Determination of Calcium in Human
Serum and Cerebrospinal Fluids with Amino G Acid Chloro-
phosphonazo..................................................... 799
H.-M. Ma

FOOD ANALYSIS

Determination of Sterols and Their Esters in Fats by Way of
Transestcrification in Different Solvents............................ 811
G. Nota, S. S. Musso, D, Naviglio, R. Romano, and V, Sabia


ENVIRONMENTAL ANALYSIS

The Identification and Quantitative Analysis of the Very Toxic
2,3,7,8-Tetrachlordibenzo-P-dioxin in the Presence ofPoly-
chlorinated Dibenzodioxins (PCDDs) and Polychlorinated
Dibenzofurans (PCDFs) Contaminated Soil Samples.................. 827
M. PehUvan, E. Pehlivan, M. A. Oiler, and H. Barlas

_______________________________

ANALYTICAL LETTERS

Volume 32, Number 5, 1999

CONTENTS
Abstracts......................................................... ix

List of Contributors............................................... xix

CHEMICAL AND BIO-SENSORS
Molecular Imprinting of Methyl Pyrazines........................... 841
E, 0, Dela Cruz, H. Muguruma, W, L Jose, andH, Pedersen

Klectrochemical Behavior of Myoglobin at a Thiamazole Modified
Silver Electrode................................................... 855
J.-J. Zhu, K. Gu. G.-C. Zhao, andH,-Y. Chen


Indirect Differential Pulse Voltammetric Determination of
Aluminum by a Pyrocatechol Violet-Modified Electrode ............. 865
G. Chen, S. Bi, L. Dai, M. Cao, Y. Chen, and X. Wang


BIOANALYTICAL
A New Method for Determination of a-Amylase with a Bulk
Acoustic Wave Sensor............................................. 885
L Bao, Q. Xie, Y. Xu, and W, Wei


Study of the Catalytic Effect ofCopper(ll)-Protein Complexes
on Luminol-HiOi Chemiluminescence Reaction and Its Analytical
Application....................................................... 901
Z. Li, K. Li, and S. Tong


Rapid Method for Differentiation of Carbonic Anhydrase I from
Carbonic Anhydrase II Activity.................................... 915
I. Puscas, M. Coltau, and G. Domuta


Determination of Free Aromatic Amines in Radiodiagnostic
Preparation Using Segmented Flow Analysis........................ 925
I. Nerncova, P. Rychlovsky, A. Halirova, and J. Zyka

PHARMACEUTICAL ANALYSIS
Cerium (IV)-Based Chemiluminescence Analysis of Analgin.......... 933
K Huang, C. Zhang, X, Zhang, andZ. Zhang


Detcrinination ofDiinefhyl-4,4'-dimethoxy-5,6,5',6'-dimethylene
Dioxybiphcnyl-2,2'-dicarboxylafe in Human Serum by High
Performance Liquid Chromatography .............................. 945
Y. Lee. C.-K. Shim, andS.-J. Chung


Spectrophotometric Determination ofTrimethoprim in Pure Form
and in Pharmaceutical Preparations Using Bromothymol Blue,
Bromocresol Green, and Alizarin Red S ............................. 955
A. L El-Ansary, Y. M. Issa, and W. Selim


KINETIC ANALYSIS
Spectrophotometric Catalytic Determination of Trace Amounts
of Selenium Based on the Reduction of Azurca by Sulphide............ 971
A. Safavi and M. Mirzaee


SPECTROMETRY
Study on Tcrphcnyl Isomers by Second-Derivative Solid-Substrate
Room Temperature Phosphorescence ............................... 985
C. Dong, S. Shuang, W. Jin, K. Feng, and C. Liu


Determination of Copper by Atomic Absorption Spectrophoto-
metry After Solid-Liquid Separation by Adsorption of Its
l-Nitroso-2-naphthol Complex onto Microcrystalline Befizo-
phenone......................................................... 995
B. Kirn andH. Choi


Rapid Determination ofMethylcyclopentadicnyl Manganese Tri-
carbonyl in Gasoline by FAAS...................................... 1011
B.Du.Q.Wei.andG.Xu


CHROMATOGRAPHY
Determination of O-lsopropyl Methylphosphonic Acid in Living
Microorganism-Agar Matrixes Using Ion Chromatography/
Conductivity Detection............................................ 1023
A.-E. F. Nassar, S. V. Lucas, andS, A. Thomas


Paper Chromatographic Study on the Inclusion Complexes of
Cyclodextrins and Methyl Orange .................................. 1037
S. Harnai and M. Handa



ELECTROCHEMISTRY

Determination ofChloramphenicol (CAP) in Food Products by
Differential Pulse Polarography .................................... 1049
J. Duda and U. Kucharska


Erratum......................................................... 1065

________________________________

ANALYTICAL LETTERS

Volume 32, Number 6, 1999

CONTENTS

Abstracts. ................................................... ix

List of Contributors ............................................... xix
MINI-REVIEW

Analytical Method Development and Validation for the Academic
Researcher....................................................... 1067
L S. Krull and M, Swartz


CHEMICAL AND BIO-SENSORS

Flow-Through Immunoassay System for Determination of Staphy-
lococcal Protein A................................................ 1081
I. Abdel-Hamid, A. L. Ghindilis, P. Atanasov, and E. Wilkins

PHARMACEUTICAL ANALYSIS

Anodic Polarographic Behavior and Determination of Aztreonam
in Dosage Forms and Biological Fluids ............................. 1095
F. A. Aly and H. Mahgoub


End-Column Amperometric Detection of 5-Fluorouracil by Capil-
lary Zone Electrophoresis with a Carbon Fiber Microelectrode....... 1109
T. You, X. Wang. X. Yang, andE, Wang


Determination ofTetracycline and 4-Epimeric Tetracycline by TLC-
Fluorescence Scanning Densitometry................................ 1121
C. Dong, H. Xie, S. Shuang, and C. Liu


Comparison of High-Performance Liquid Chromatography and
Absorbance Ratio Methods for the Determination of Hydrochloro-
thiazide and Lisinopril in Pharmaceutical Formulations ••••••••••••• 1131
N,ErkandM.Kartal


Internal Solid Contact Electrode for the Determination of Clen-
buterol in Pharmaceutical Formulations and Human Urine .......... 1143
X. X. Sun andH. Y. Aboul-Enein


Bonded-Phase Liquid Chromatographic Assay of Chlorphenir-
amine in Human Serum .................................... 1157
M. F. Zaater, N, Najib, and E. Ghanern


Use of Inverse Multiple Linear Regression (ILS) for the Analytical
Control of Pharmaceutical Preparations. UV-VisibleSpectrophoto-
metric Quantitation of an Active Principal in the Presence of
Absorbing Excipients . ................ 1169
M. Blanco, J. Coello, H.lturriaga, S. Maspoch, and
S, Alaoui-lsmaili

BIOANALYTICAL

Investigation of Peroxynitrite-induced Oxidative Stress in Red Blood
Cells Monitored by Luminol-Dependent Chemiluminescence .......... 1183
J. Kanski, T. Koppal, andD. A. Butter field


FORENSIC ANALYSIS

Restriction Fragment Length Analysis of Mitochondrial DNA for
Screening Purposes in Human Identification ......................... 1193
L. Palumbo, I. Medintz, and L Kobilinsky

ELECTROCHEMISTRY

Determination of Nitrite in Aqueous Solutions Using the Linear
Sweep Voltammetry Technique..................................... 1203
R, B. Almeida, S, S. S. Borges. andM, G. Gomes

SPECTROMETRY

A Sensitive Chemiluminescence Flow System for the Determination
of Sulfite......................................................... 1211
K Huang, C. Zhang, X. Zhang, and Z. Zhang


Spectrophotometric Determination of Trace Amounts of Molybdenum
in Steel and Pure Iron with a New Chromogenic Reagent, Dimethoxy-
hydroxyphenylflurone............................................. 1225
S. Lui andJ. Pan


SEPARATIONS


Capillary Zone Electrophoresis Determination of Aliphatic Alcohols
Derivatized to Their Dithiocarbonates Using Phase Transfer
Catalysis........................................................ 1235
A. W. M. Lee, L Liu, D.Lau, andR. Chan


Analytical Resolution of 4-Aryl-l,2,3,4,5,6,7,8-octahydroquinazoline-
2-thiones Using a Cellulose Chiral Stationary Phase................... 1245
S. Sarac M. Yarym, and M. Ertan


Comparison of Miccllar Electrokinetic Chromatography with HPLC
for the Separation ofHematoporphyrin Derivatives ................. 1255
M.LinandN.Wu


Announcement.................................................... 1269

________________________________

ANALYTICAL LETTERS

Volume 32, Number 7, 1999

CONTENTS

Abstracts......................................................... v

List of Contributors............................................... xv
MINI-REVIEW


Ion Channel Sensor ............................................... 1271
L Luo, X. Yang, and E. Wang


CHEMICAL AND BIO-SENSORS

Construction of a Glucose Biosensor Immobilized with Glucose
Oxidase in the Film of Polypyrrole Nanotubules...................... 1287
F. Miao. M, Qi. S. Zhan, N. He, I Wang, and C. Yuan


Simultaneous Determination of D-Lactic Acid and L-Lactic Acid
Using a Flow System with Two Enzyme Reactors and an Octadecyl-
silica Column in One Line. ••••••••••••••••••••••••••••••••••••••••• 1301
H. Mori


BIOANALYTICAL

Detection ofAnabolic Steroids by GC/SIM/MS with Trifluoro-
acetylation in Equine Plasma and Urine ............................ 1313
M. H. Choi. J. Y. Kirn, and B. C. Chung


Determination of Proteins at Nanogram Levels with Their
Enhancement Effects of Resonance Light-Scattering on Quercetin.... 1323
P. Feng, X. L Hu, and C. Z. Huang


A Rapid Method for Mercury Determination in Urine of Workers
Exposed to Mercury Vapor ........................................ 1339
0. Zenebon, A. M. Sakuma, F. D, de Maio, I. A. Okada, and
J. Lichtig



Sensitivity and Specificity of DR-70™ Lung Cancer Immune-
assay ............................................................ 1351
D. F. Wu, X. Zhou, G. Anderson, A. Fuentes, L. M. Slater,
D. Narinesingh, P. Jimenez., and T. Gopoesingh


PHARMACEUTICAL ANALYSIS

Stability Indicating HPLC Method for the Determination of
Sparfloxacin (SPAR).............................................. 1363
A. P. Argekar and S. J. Shah


Ratio-Spectra Zero-Crossing Derivative Spectrophotometric
Determination of Certain Drugs in Two-Component Mixtures........ 1371
N. Erk


Simultaneous Multivariate Spectrophotometric Analysis of Binary
and Ternary Mixtures of Sulfamethoxazole, Trimethoprim, and
Phenazopyridine in Tablets ........................................ 1389
M. E, Ribone, A. P. Pagani, and A. C. Olivieri


Spectrophotometric and Spectrofluorimetric Determination of
Famotidine and Ranitidine Using 1,4-Benzoquinone Reagent .......... 1403
A. K. S. Ahmad, M. A. Kawy, andM. Nebs en


New Colorimetric Methods for Microdetermination ofMelatonin
in Pure and in Dosage Forms ...................................... 1421
A. S. Amin, M. Zaky, H. M. Khater, and A. M. El-Beshbeshy

ELECTROCHEMISTRY

Direct Determination of Labile Monomeric Aluminum in Natural
Waters by A. C. Oscillopolarography in the Presence of Rubcanic
Acid ............................................................. 1435
S. Bi, X. Li, N. Gan, L Ye, H. Liang, L. Dai, M. Cao, and Y. Chen

ENVIRONMENTAL ANALYSIS

Phosphine Production Potential of Various Wastewater and Sewage
Sludge Sources.................................................... 1447
I. Devai, R. D. DeLaune, G. Devai, W. H. Patrick, Jr, and
I. Czegeny


Determination of Organic Acids in Ground Water by Liquid
Chromatography/Atmospheric Pressure Chemical lonization/Mass
Spectrometry..................................................... 1459
J. Fang andM. J. Barcelona

______________________________

ANALYTICAL LETTERS

Volume 32, Number 8, 1999

CONTENTS

Abstracts......................................................... v

List of Contributors............................................... xv
MINI-REVIEW

Transduction Platforms and Biointerfacial Design of Biosensors for
"Real-Time" Biomolecular Interaction Analysis...................... 1475
J. G. Quinn andR. 0 'Kennedy

CHEMICAL AND BIO-SENSORS

Kinetic Studies of Affinity Interactions: Comparison of Piezoelec-
tric and Resonant Mirror-Based Biosensors. ••••••••••••••••••••••••• 1519
P. Skladalandi Horacek


Simultaneous Determination Glucose and Sucrose Using a Flow
System with Two Enzyme Reactors and an Octadecylsilica Column
in One Line....................................................... 1531
H. Mori, M. Kogure, Y. Kuroda, M. Nissato, Y. Tamura,
N. Watanabe, andH. Yamamoto

BIOANALYTICAL

A Fluorometric Determination of Urea with Urease ................. 1543
S. Suye, J. Miura, andM. Ohue


Enzyme Linked Immunoassay (ELISA) for Lecithin: Cholcstcrol
Acyltransferase (LCAT)........................................... 1553
K. R. Murray, M. P. Nair, W, J. McConathy, and A. G. Lacko


Disposable Sensing Elements for Fluorescent Immune-displacement
Assays........................................................... 1565
A. L. Ghindilis, E. Rabinovich, and G. P. Lopez


Determination of Molybdenum in Human Urine by Spectropho-
tometric Method Using Thiazolylazo Compounds as Chromogenic
Reagents......................................................... 1575
A. S. Amin

PHARMACEUTICAL ANALYSIS

Determination ofFleroxacin in Plasma by Direct Injection High
Performance Liquid Chromatography with Column Switching....... 1589
M. Kudo, T. Ohkubo, andK. Sugawara


Electrochemical Oxidation of the Hypoglycaemic Drug Gliclazide .... 1603
A. Radi, M. A. ElRies, and G. E. Bekhiet


Simultaneous Determination ofSulphamethoxazole and Trimetho-
prim in Co-trimoxazole Tablets by First-Derivative FTIR Spectro-
metry............................................................ 1613
K. Kargosha and S. H. Ahmadi

SPECTROMETRY

Compound-Independent Calibration by Gas Chromatography-
Atomic Emission Detection (GC-AED): Analysis of Molecules with
12 Carbon Atoms ................................................. 1627
W. Elbast, M. S, Caubet, D. Deruaz, andi L Brazier


Highly Selective Photometric Method for the Determination of
Periodate......................................................... 1643
A. A. Ensafi andS. Zakeri

CHEMOMETRICS

Pattern Recognition ofNebbiolo Wine as a Function of the Fungi-
cide Treatment of the Grape ....................................... 1653
E, Marengo, V. Maurino, S. Angelino, R. Aigotti, C. Baiocchi,
andM. C. Gennaro


SEPARATIONS

Sol-Gel Method for the Preparation of Solid-Phase Microextraction
Fibers............................................................ 1675
Z P. Zhou. Z Y. Wang, C. X Wu, W, Zhan, and Y. Xu


Gas Chromatographic Analysis in the Synthesis ofPoly(Ethylene
oxide) Dimethyl Ethers ............................................ 1683
Z Wu, F. Han, S. Guo, and Y. Wang


Announcements................................................... 1695

______________________________

ANALYTICAL LETTERS

Volume 32, Number 9, 1999

CONTENTS

Abstracts......................................................... ix

List of Contributors............................................... xxi
MINI-REVIEW

Fluorimetric Determination of Selenium in Biological Samples 1699
E. M. Rodriguez Rodriguez, M. Sanz Alaejos, and C. Diaz Romero

CHEMICAL AND BIO-SENSORS

A New Disposable Biosensor for the Accurate and Sensitive Detec-
tion ofEthylenebis(dithiocarbamate) Fungicides...................... 1723
T. Noguer, A. Gradinaru, A. Ciucu, andJ.-L. Marty


Screen Printed Cupric-Hexacyanoferrate Modified Carbon Enzyme
Electrode for Single-Use Glucose Measurements...................... 1739
J. WangandX. Zhang

Signal Enhancement Using a Swellable Polymer TSM Acoustic
Wave Sensor Coating.............................................. 1751
J. I Chance and W. C. Purdy

BIOANALYTICAL

Voltammetric Enzyme-Linked Immunoassay for Trace (x-Feto-
protein in Human Serum Using 0-, M-, and P-Aminophenol as
Substrates........................................................ 1761
S. Zhang, K. Jiao, andH. Chen

Detection of Human Serum Albumin by a Photoinduced Fluoro-
genic Reaction.................................................... 1775
Q.-Z, Zhu. Y.-Y. Lin, D.-H. Li, J.-G. Xu, andX.-Q. Guo


Thermally Reversible Hydrogel Based Fluoroimmunoassay of
Methyltestosterone................................................ 1787
J. Gao. Y. Z Li, Z Q. Guo, W. B. Chang, and Y. X. Ci


SPECTROMETRY

Simple Selective Spectrophotometric Method for the Determi-
nation of Ruthenium in Carbon Supported Pf-Ru-Ge Catalyst........ 1799
M, Balcerzak, E. Swiecicka, andD, Bystronska


Determination of Metal Ions in Natural Waters by Flamc-AAS
After Preconcentration on a 5-Amino-l,3,4-thiadiazolc-2-thiol
Modified Silica Gel............................................... 1807
P. M, Padilha, L A. M. Gomes, C. C F. Padilha, J. C. Moreira,
andN. L D. Filho


Further Determination of Cadmium Ions in Water by an Electro-
chemiluminescence Method........................................ 1821
P. J. Taverna, H. May field, and A. R. J, Andrews


Determination ofPindonc in Baits by Using Time-Resolved
Lanthanide-Sensitized Luminescence and Kinetic Methodology 1835
B. Sendra, S. Panadero, and A. Gomez-Hens


FLOW INJECTION ANALYSIS

An Integrated Microdistillation Flow Injection System for Ammonia
Measurement..................................................... 1847
R. Lane, C W. K. Chow, D. E, Davey, D. E. Mulcahy, andS. McLeod


CHEMOMETRJCS

Relationship Between Retention Characteristics and Physicochemi-
caJ Parameters of Solutes on a Porous Graphitized Carbon Column
Studied by Canonical Correlation Analysis .......................... 1867
E. Forgoes and T. Cserhati


Spectrophotometric Simultaneous Determination of Amaranth,
Ponceau 4R, Allura Red, and Red 2G by Partial Least Squares and
Principal Component Regression Multivariate Calibration ............ 1879
J. J. Berzas-Nevado, C. Guiberteau-Cabanillas,
A. M. Contento-Salcedo, a^dR. Martin-Villamuelas


A Wavelet-Based Genetic Algorithm for Compression and De-
noising of Chromatograms......................................... 1899
X. Shao, F. Yu, H, Kou, W. Cai, andZ. Pan


KINETIC AND CATALYTIC METHODS

Kinetic-Spectrophotometric Determination of Trace Amounts of
Resorcinol Based on Its Inhibitory Effect on the Formaldehyde
Catalyzed Reaction Between Bromafe and Neutral Red ............... 1917
H. Parham, N. Pourreza, andS. Cheraghi



Spectrophotometric Reaction Rate Method for the Determination
of Trace Amounts ofVanadium(V) by Its Catalytic Effect on the
Oxidation of Nile Blue with Bromate................................ 1927
A. A. Ensafi, M, K. Amini, andM. Mazloum

______________________________

ANALYTICAL LETTERS

Volume 32, Number 10, 1999

CONTENTS

Abstracts......................................................... v

List of Contributors............................................... xv
MINI-REVIEW


The State of the Art of Analytical Chemistry in Argentina............. 1939
G.ARivas

CHEMICAL AND BIO-SENSORS

Electrocatalytical Properties of a Potassium Hcxacyanoferrate(ll)
Modified Polypyrrole Electrode. Application to Vitamin C
Determination.................................................... 1961
J. Garcia Alonso, C. de la Fuente Sanchez, M. L Tascon Garcia,
M, D, Vazquez Barbado, and P. Sanchez Batanero


Comparison Between Three Amperometric Sensors for Phenol
Determination in Olive Oil Samples................................. 1981
V. Campo Dall'Orto, C. Danilo\vicz, L Rezzano, M. Del Carlo, and
M. Mascini


Simultaneous Determination of Lead and Copper by Carbon Paste
Electrode Modified with Pyruvaldehyde bis (N,N'-Dibutyl Thiosemi-
carbazone)....................................................... 1991
J. Qu, M. Liu, andK. Liu


ANALYTICAL BIOCHEMISTRY

Spectrophotometric Method for the Determination of Polyphenol
Oxidase Activity by Coupling of 4-tert-Butyl-o-benzoquinone and
4-Amino-N,N diethylanilinc........................................ 2007
A. Rescigno, E. Sanjust, G. F. Pedulli, andL Valgimigh

PHARMACEUTICAL ANALYSIS

Simultaneous Determination of Timolol Maleate and Pilocarpine
Hydrochloride in Ophthalmic Solutions by First Derivative UV
Spectrophotometry and PLS-I Multivariate Calibration............. 2019
M. L Satuf C, Robles, H. C. Goicoechea, and A. C. Olivieri


Spectrophotometric Determination ofNaproxen in Pure and
Pharmaceutical Preparations....................................... 2035
I. U. Khan, T. Aman, A. Ashraf, and A. A. Kazi


« Determination ofMeloxicam in Tablet Formulations by Ultra-
violet Spectrophotometry and High-Performance Liquid
Chromatography................................................. 2051
J. Joseph-Charles andM. Bertucat

Spectrophotometric Determination of Imipramine-HCI in Pure
and Pharmaceutical Preparations.................................. 2061
L U. Khan, T. Aman, A. A. Kazi, andR. Azizuddin

ELECTROCHEMISTRY

Voltammetric Stripping Analysis of Copper in Distilled Beverages

Using Solid Electrodes ............................................ 2071
P. J. S. Barbeira andN. R. Stradiotto

Simultaneous Polarographic Determination of Lead(ll) and Tin(II)
by Multivariate Calibration........................................ 2081
I Y.NiandL.Wang


SPECTROMETRY

The Determination ofCd, Cu, and Pb in Potable Water and Plant
Material by Flame-AAS After On-Line Preconcentration ofDDTP-
NH4 Metal Complexes on a C18 Column............................. 2091
S. M. Sella, A. K. Avila, andR. C. Campos


Study of the Simultaneous Determination of Trace Arsenic and
Mercury by Flow Injection/Hydride Generation/ICPTAES............. 2105
X, Yu, Z Liao, Z, Jiang, J. Chen, and S. Wang

KINETICS AND CATALYTIC METHODS

Flow Injection Catalytic Determination of Vanadium Using the
Indicator Reaction Between Victoria Blue B and Bromate and a
Citric Acid Activator.............................................. 2115
Z.-Q. Zhang, X.-P. Liu, andH.-Y. Zhan


Catalytic Quenching Spectrofluorimetric Determination of Trace
Amounts of Vanadium(V) Based on Its Catalytic Effect on the
Azomethine-H-Bromate Reaction................................... 2127
Y. Gao, X. Zhang, B. Zhao, W. Yang, Y. Zhao, X. Teng, andJ. Kang


Announcement.................................................... 2141

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ANALYTICAL LETTERS

Volume 32, Number 11, 1999

CONTENTS

Abstracts........................................................ v

List of Contributors .............................................. xv
MINI-REVIEW

Novel and Recent Applications of Elemental Determination by
Laser-Induced Breakdown Spectrometry........................... 2143
J. Sneddon and Y.-l, Lee

CHEMICAL AND BIO-SENSORS

Immunoassay for the Determination of 7-Hydroxycoumarin in
Serum Using 'Real-Time' Biosensor Analysis ....................... 2163
G. J. Keating, J. G. Quinn, and R, 0 'Kennedy


Tetracyclinc Sensitive Membrane Electrodes Based on Poly(Vinyl
Chloride) Matrices and Their Use in Drug Analysis ................. 2177
A. L. El-Ansary, Y, M. lssa, and A. S. Tag-Eldin

Ion-Selective Electrode for the Determination of Furaltadone •••••••• 2191
S. KhalilandS. AbdEl-Aliem


Cationic Surfactant Ion-Selective PVC Membrane Electrode
Containing Macrocyclic Diimine Crown Ether...................... 2201
M. B. Saleh

BIOANALYTICAL


Enzymatic Spectrophotometric Determination of Nitrites in Beer • •••• 2217
S. Girotti, E. N. Ferri, F. Fini, F. Ruffini, R. Budini, /. Moura,
G. Almeida, C. Costa, J. J. G. Moura, and G. Carrea


Chromatographic Separation and Mass Spectrometric Analysis
of Bacterial Cell Wall Synthesizing Enzyme Complexes.............. 2229
S, Bhardwaj. Y. Du. and R. A. Day


PHARMACEUTICAL ANALYSIS

Rapid and Sensitive Analysis of Diclofenac in Human Plasma by
GC/SIM/MS................................................ 2245
M. H. Choi, K K, Choi. andB. C. Chung


Application of Ion-Pairs in Pharmaceutical Analysis, Atomic
Absorption Spectrometric Determination of Promazine,
Chlorpromazine, Promethazine, Imipramine, and Ciprofloxacin
Hydrochlorides with Sodium Cobaltinitrite ......................... 2255
A. L. El-Ansary, W. F. El-Hawary, Y. M. Issa, and A. F, Ahmed


Study on the Voltammetric Adsorption Behavior of Paclitaxel
and Its Application ............................................... 2271
Y. Yu and Q. L Li


High Performance Liquid Chromatographic Method for the
Analysis of Omeprazole and 5-Hydroxyomeprazole in Human
Plasma........................................................... 2285
P. N, V. Tata and S. L. Bramer


ELECTROLUMINESCENCE

Chemiluminescence Determination of Gluconic Acid in Pharma-
ceutical Formulations Using Ru(bipy)3(2+)-K104-Ce(IV) System........ 2297
H, Han. Z. He, X. Li. and K Zeng


Effects of Heteropoly Acids and Surfactant on Electrochemi-
luminescence of tris(2,2'-Bipyridine) Ruthenium(ll) ................. 2311
G. Xu, L. Cheng, and S. Dong

SPECTROMETRY

Determination of Vanadium in Foods by Atomic Absorption
Spectrophotometry............................................... 2327
A. Adachi, S. Sawada, K. Shida, E. Nakamura, and T. Okano

ELECTROCHEMISTRY

Polarographic Determination of Glycyrrhizic Acid Based on
Double Enhancement Action of Surfactant and Dissolved Oxygen .... 2335
W, Guo, X. Kang, andi Song

Announcements.................................................. 2349

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