BUNSEKI KAGAKU

Vol. 55 No. 1

January, 2006

Table of Contents

Research Papers

Simple Pretreatment Procedure and Automated Immunoassay System for Detection of PCBs in Transformer Oil

Naoya Ohmura, Thomas R. Glass, Kazuhiro Sasaki, Takashi Joh, Yukihiro Taemi and Naoyuki Yokobori 1

Technical Papers

Selective Separation of Diphenylarsinic Acid in Biological Samples by Combined Solvent Extraction with Solid-Phase Extraction and Determination by Graphite-Furnace Atomic-Absorption Spectrometry

Seiichi Ueno, Tatsumi Kitamura, Miki Nakamura, Keiko Ozone and Mutsuo Ishizaki 9

Optimum Digestive Conditions for Determination of Total Nitrogen in Soy Sauce by Kjeldahl Method

Shintaro Nozawa, Kenichi Sakaida, Tadanao Suzuki and Akemi Yasui 15

Determination of Dalapon in Water Samples by Liquid Chromatography/Mass Spectrometry Using Solvent Extraction

Hisatake Narasaki 23

Development of a Method for the Determination of Organic Contaminants in Biological Tissue and Its Application to International Comparisons

Masahiko Numata, Takashi Yarita, Yoshie Aoyagi, Misako Yamazaki, Yoko Yamamoto, Akiko Takatsu and Keiichiro Ishikawa 29

Notes

Determination of Diphenylarsinic Acid in Plants and Biological Samples by HPLC/MS/MS Using a Stable Isotope Labeled Compound

Seiichi Ueno, Tatsumi Kitamura, Miki Nakamura, Keiko Ozone, Yasuyuki Shibata and Mutsuo Ishizaki 41

Analytical Reports

Determination of Dihydropyrimidine Dehydrogenase Activity in Human Peripheral Blood Mononuclear Cells by Radio-HPLC Method

Makoto Inada, Takefumi Shimizu and Nobuhiro Ikei 45

Rapid Dissolution Techniques with Microwave Heating Devices for Solidified Products Made from Non-Metallic Wastes by Plasma Melting

Tomoko Haraga, Yutaka Kameo and Mikio Nakashima 51

Determination of Minerals in Commercial Tofu by Atomic Absorption Spectrophotometry and Flame Spectrophotometry

Satoko Tanaka and Kenji Chayama 55

Digest of Doctoral Dissertation

Study on the Measurement of Atmospheric Gaseous Sulfur Compounds by means of Miniature Diffusion Scrubbers

Shin-Ichi Ohira 61

Development of Simultaneous Detection Method Using Online Reaction for pri-, sec-, and tert-Amine

Nobumitsu Niina 63

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