2008 May thru August

May/June | July | August

May/June

Evaluation of a Headspace-GC Method for Residual Solvents in a Serotonin 5-HT3 Antagonist Compound
C. B’Hymer 369

GC–MS Analysis of Acylated Derivatives of a Series of Side Chain Regioisomers of 2-Methoxy-4-Methyl-Phenethylamines
Tamer Awad, Jack DeRuiter, and C. Randall Clark 375

Measurement of Fuel Oxygenates in Tap Water Using Solid-Phase Microextraction Gas Chromatography–Mass Spectrometry
Frederick L. Cardinali, Benjamin C. Blount, Rachael Schmidt, and John Morrow 381

Gas Chromatographic Analysis of Petroleum Associated Condensate Oil with Simultaneous Determination of Some Characteristic Physical Parameters
N.E. Moustafa 388

Determination of Carbon Monoxide in Tuna by Gas Chromatography with Micro-Thermal Conductivity Detector
Cristian Bernardi, Luca Maria Chiesa, Silvia Soncin, Elena Passerò, and Pier Antonio Biondi 392

A Simple Gas Chromatographic Method for the Simultaneous Determination and Pharmacokinetic Study of Tetramethylpyrazine Phosphate and Borneol in Mouse Plasma and Brain Tissue After Oral Administration of the Fufang Tetramethylpyrazine Phosphate Tablets
Xiao Yan-yu, Ping Qi-neng, and Chen Zhi-peng 395

Separation and Identification of Volatile Constituents in Artemisia argyi Flowers by GC–MS with SPME and Steam Distillation
Ning Li, Yu Mao, Chunhui Deng, and Xiangmin Zhang 401

Prediction of Kovats Retention Indices of Some Aliphatic Aldehydes and Ketones on Some Stationary Phases at Different Temperatures Using Artificial Neural Network
Elaheh Konoz, Mohammad H. Fatemi, and Razieh Faraji 406

Direct Screening of Water Samples for Benzene Hydrocarbon Compounds by Headspace Liquid-Phase Microextraction–Gas Chromatography
Massoud Kaykhaii and Mohammad Moradi 413

In Vitro Characterization of Borneol Metabolites by GC–MS Upon Incubation with Rat Liver Microsomes
Rong Zhang, Chang-hui Liu, Tian-lai Huang, Ning-sheng Wang, and Sui-qing Mi 419

A Rapid Multi-Residue Determination Method of Herbicides in Grain by GC–MS-SIM
Libing Wang, Cao Li, Chifang Peng, Xiangqian Li, and Chuanlai Xu 424

Computer-Assisted Optimization and Validation of LC Analysis of Trimetazidine Dihydrochloride and its Impurities
Mirjana B. Medenica, Darko P. Ivanovic, Igor B. Popovic, Andjelija M. Malenovic, and Biljana S. Jancic 430

Simultaneous Determination of Three Flavonoid Aglycones in Elsholtzia blanda by Adopting Orthogonal Test and High-Performance Liquid Chromatography
Juan-Hua Xu, Yi-Gang Lai, Hui-Di Jiang, and Yu Zhao 436

A Simple and Sensitive Stability-Indicating RP-HPLC Assay Method for the Determination of Aceclofenac
J.R. Bhinge, R.V. Kumar, and V.R. Sinha 440

Sensitive HPLC–ESI-MS Method for the Determination of Tiotropium in Human Plasma
Li Ding, Wenming Tan, Yindi Zhang, Jianping Shen, and Zhengxing Zhang 445

Determination of 5-Fluorouracil in Serum Microsamples by a High-Performance Liquid Chromatographic Method and its Application to Pharmacokinetic Studies in Rats
Qiao Wang, Xueying Song, Feng Zhang, and Yongli Liu 450

The Overall Quality Control of Radix Scutellariae by Capillary Electrophoresis Fingerprint
Guoxiang Sun and Cunyi Shi 454

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July

Monthly Feature:
Pharmaceutical and medicinal substances

HPLC–UV Method Development and Validation for the Determination of Low Level Formaldehyde in a Drug Substance
A. Soman, Y. Qiu, and Q. Chan Li 461

Separation of The Two Enantiomers of T-3811ME by Normal-Phase HPLC Using Modified Amylose as Chiral Stationary Phase
Jun Lu and Abu M. Rustum 466

Development and Validation of an HPLC Method for the Quantitation of 1,3-Dihydroxy-2-methylxanthone in Biodegradable Nanoparticles
Maribel Teixeira, Carlos M.M. Afonso, Madalena M.M. Pinto, and Carlos Maurício Barbosa 472

Azithromycin Quantitation in Human Plasma by High-Performance Liquid Chromatography Coupled to Electrospray Mass Spectrometry: Application to Bioequivalence Study
Fengguo Xu, Zunjian Zhang, Zuwei Bian, Yuan Tian, Haoyan Jiao, and Ying Liu 479

Determination of Atazanavir in Human Plasma by High-Performance Liquid Chromatography With UV Detection
Dario Cattaneo, Franco Maggiolo, Diego Ripamonti, and Norberto Perico 485

Analysis of Ciprofloxacin by a Simple High-Performance Liquid Chromatography Method
Shihn-Sheng Wu, Chih-Yuan Chein, and Yen-Hsia Wen 490

Development and Validation of an RP-HPLC Method to Quantitate Acyclovir in Cross-Linked Chitosan Microspheres Produced by Spray Drying
Hellen Karine Stulzer, Monika Piazzon Tagliari, Fábio S. Murakami, Marcos A.S. Silva, and Mauro C.M. Laranjeira 496

Simultaneous Estimation of Metformin Hydrochloride, Pioglitazone Hydrochloride, and Glimepiride by RP-HPLC in Tablet Formulation
Deepti Jain, Surendra Jain, Deepak Jain, and Maulik Amin 501

Development and Validation of a Fast RP-HPLC Method for Determination of Methotrexate Entrapment Efficiency in Polymeric Nanocapsules
Tatiane Sartori, Fabio Seigi Murakami, Ariane Pinheiro Cruz, and Angela Machado de Campos 505

LC and LC–MS Study on Establishment of Degradation Pathway of Glipizide Under Forced Decomposition Conditions
Gulshan Bansal, Manjeet Singh, K.C. Jindal, and Saranjit Singh 510

MEPS as a Rapid Sample Preparation Method to Handle Unstable Compounds in a Complex Matrix: Determination of AZD3409 in Plasma Samples Utilizing MEPS–LC–MS–MS
Mohamed Abdel-Rehim, Anita Andersson, Anna Breitholtz-Emanuelsson, Maria Sandberg-Ställ, Kristina Brunfelter, Karl-Johan Pettersson, and Carina Norsten-Höög 518

A New Assay Based on Solid-Phase Extraction Procedure with LC–MS to Measure Plasmatic Concentrations of Tenofovir and Emtricitabine in HIV Infected Patients
Antonio D’Avolio, Mauro Sciandra, Marco Siccardi, Lorena Baietto, Daniel Gonzalez de Requena, Stefano Bonora, and Giovanni Di Perri 524

Determination of Oxymatrine in Human Plasma by LC–MS and Study on its Pharmacokinetics
Wei Zhang, Bing-ren Xiang, and Peng-cheng Ma 529

Characterization of In Vivo Metabolites of Toad Venom Using Liquid Chromatography–Mass Spectrometry
Yoshimichi Miyashiro, Tadashi Nishio, and Kazutake Shimada 534

Capillary Gas Chromatographic Determination of Methylglyoxal from Serum of Diabetic Patients by Precolumn Derivatization Using Meso-Stilbenediamine as Derivatizing Reagent
A.J. Kandhro, M. Aslam Mirza, and M.Y. Khuhawar 539

Quantitative Determination of Octadecenedioic Acid in Human Skin and Transdermal Perfusates by Gas Chromatography–Mass Spectrometry
Anja Judefeind, Peet Jansen van Rensburg, Stephan Langelaar, Johann W. Wiechers, and Jeanetta du Plessis 544

Gas Chromatographic Retention Indices of Fentanyl and Analogues
Laxmi Manral, Pradeep Kumar Gupta, Kumaran Ganesan, and Ramesh Chandra Malhotra 551

Purification of Escherichia coli L-asparaginase Mutants by a Native Polyacrylamide Gel Electrophoresis
Yujun Wei, Jianhua Chen, Ruibo Jia, Min Wang, and Wutong Wu 556

An Image Analysis System for Thin-Layer Chromatography Quantification and Its Validation
Tang Tie-xin and Wu Hong 560

Influence of Inorganic Mobile Phase Additives on the Retention and Separation Efficiency of Selected Amino Acids in Thin-Layer Chromatography on Cellulose Layers
Jolanta Flieger and Ma?gorzata Tatarczak 565

Thiophilic Interaction Chromatography of Serum Albumins
Mustapha Bourhim, Anita Rajendran, Yanira Ramos, Thamarapu Srikrishnan, and Eugene Sulkowski 574

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AUGUST

Solid-Phase Microextraction in Combination with GC–FID for Quantification of the Volatile Free Fatty Acids in Wastewater from Constructed Wetlands
Lin Feng, Yuming Huang, and Hao Wang 577

Pesticide Levels in Ground and Surface Waters of Primavera do Leste Region, Mato Grosso, Brazil
Eliana F.G.C. Dores, Leandro Carbo, Maria L. Ribeiro, and Ermelinda M. De-Lamonica-Freire 585

Development of a Size Exclusion Chromatography–Electrochemical Detection Method for the Analysis of Total Organic and Inorganic Chloramines
Fariba Amiri and Susan Andrews 591

A Chemometric Strategy for Optimization of Solid-Phase Microextraction: Determination of Bisphenol A and 4-Nonylphenol with HPLC
Xiaoyan Liu, Xiaoyun Zhang, Haixia Zhang, and Mancang Liu 596

Studies of Human and Veterinary Drugs’ Fate in Environmental Solid Samples— Analytical Problems
Joanna Wilga, Agata Kot-Wasik, and Jacek Namiesnik 601

Enhanced Extraction of Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) in the Presence of Sodium Dodecyl Sulphate and its Application to Environmental Samples
Gaurav, Ashok Kumar Malik, and Pramod Kumar Rai 609

Analysis of Phenoxyl-Type N-Methylcarbamate Pesticide Residues in Vegetables by Capillary Zone Electrophoresis with Pre-Column Hydrolysis and Amperometric Detection
Xucong Lin, Qin Hong, Xiaoping Wu, Liangqia Guo, and Zenghong Xie 615

Determination of Pyrethroid Pesticide Residues in Vegetables by Solvent Sublation Followed by High-Performance Liquid Chromatography
Huiru Dong, Pengyu Bi, and Yanli Xi 622

Validation and Application of an HPLC Method for Determination of Di (2-ethylhexyl) Phthalate and Mono (2-ethylhexyl) Phthalate in Liver Samples
Debajit Sircar, Sargon J. Albazi, Yousef Atallah, and William Pizzi 627

A Method for the Low-Level (ng/g) Determination of Perfluorooctanoate in Carpet by LC–MS–MS Using Matrix Extracted Standards
Karen L’Empereur, Marilyn Stadalius, Yongdong Zhu, Bashir A Mansoori, Tsuguhide Isemura, Mary A. Kaiser, Wolfgang Knaup, and Masahiro Noguchi 632

Determination of Residual Isobutylene Oxide—A Genotoxic Starting Material in a Drug Substance by Static Headspace Gas Chromatography
Jun Han, David Yeung, Fang Wang, and David Semin 637

Development and Validation of a Liquid Chromatography–Mass Spectrometry Method for the Determination of 4,5-Diazafluoren-9-one
Ghulam A. Shabir 643

Simultaneous Determination of Aceclofenac, Paracetamol, and Chlorzoxazone by RP-HPLC in Pharmaceutical Dosage Form
K.A. Shaikh and A.B. Devkhile 649

Studies on Neurosteroids XX. Liquid Chromatography–Tandem Mass Spectrometric Method for Simultaneous Determination of Testosterone and 5a-Dihydrotestosterone in Rat Brain and Serum
Tatsuya Higashi, Yasuaki Ninomiya, and Kazutake Shimada 653

Gas Chromatographic–Mass Spectrometric Analysis of Acrylamide and Acetamide in Cigarette Mainstream Smoke after On-Column Injection
Joerg Diekmann, Arno Wittig, and Regina Stabbert 659

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