B U N S E K I K A G A K U

Vol. 51 No. 11

November, 2002

Table of Contents

Research Papers

Identification of Halogens and Estimation of Elemental Ratios with an Atomic Emission Detector Using a Radio Frequency Helium Plasma for GC

Tatsuro Nakagama, Toshiaki Morita, Tsuneaki Maeda, Katsumi Uchiyama and Toshiyuki Hobo 993

Observation of Hazardous Chemicals in Seawater Using a Regular Ferryboat Service

Masayuki Kunugi, Kazuo Fujimori, Takeshi Nakano and Akira Harashima 1001

Analysis of Individual Polychlorinated Naphthalene Congeners and Dioxin-Like Compounds in a Dated Sediment Core from Lake Kitaura, Japan

Yuichi Horii, Makoto Okada, Kazuo Amano, Nobuyasu Hanari, Sachi Taniyasu and Nobuyoshi Yamashita 1009

Technical Papers

Simultaneous Determination of Ultratrace Amounts of Carbon and Sulfur in Steel by an Infrared Absorption Method after Combustion in an Induction Furnace

Chiyoko Miyagi, Kikuko Oomuro, Yosirou Takizawa and Nobuyuki Morito 1019

Determination of Bisphenol A in River-Waters Samples by LC/MS Using Solid-Phase Sorbents

Hisatake Narasaki 1027

Notes

Visual Fluorimetry of Trace Lead Using Ion-Pair Extraction onto an Octade cylsilanized Silica Disk

Junichi Isoe, Yasuhiro Sakai, Emiko Kaneko, Shingo Saito, Suwaru Hoshi and Kunihiko Akatsuka 1037

Fundamental Study of the Adsorption of 1-Pentanol, Ribofravin and Thioctic Acid on a Gold Electrode

Hiromiti Sawamoto and Setsuko Kashimori 1041

Portable X-ray Fluorescence Spectrometer System Using a Low-Level Radioisotope ⁵⁵Fe

Susumu Shimoyama, Yasuko Noda and Nobuaki Kuchitsu 1045

Technical Letters

Preparation and Certification of the Reference Materials River Sediment (JSAC 0431 and JSAC 0432) for the Determination of Dioxins

Kensaku Okamoto, Akio Yasuhara, Mariko Murayama, Takesi Nakano, Katashi Kenmotsu, Souichi Ohta, Takao Yagi, Satoshi Tsuruta, Tohru Matsumura, Masahiro Takeuchi, Takafumi Kida, Yasusuke Matsumoto, Kazutoshi Kakita, Akihiro Ono and Mamoru Sakata 1049

Analysis of a Rare-Earth Sample, Didym by Ion Chromatography/Neutron Activation Analysis and Isotachophoresis/Particle Induced X-ray Emission Method

Hirokatsu Takemi, Hokuto Shidawara, Kazuaki Ito, Yoshio Hashimoto, Fumitaka Nishiyama and Takeshi Hirokawa 1063

Simultaneous Determination of Simazine, Thiuram, and Benthiocarb in River-Water by Solid-Phase Extraction/HPLC

Hideaki Kitami, Tetsuo Watanabe, Takio Kitahara, Yoshimi Ishihara and Jiro Tanano 1069

Multielement Determination of Major-to-Ultratrace Elements in Sediment, Rock and Clay Samples by ICP-AES and ICP-MS

Ayano Sekimoto, Kensaku Horie, Tomokazu Matsumoto and Hiroki Haraguchi 1075

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