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

Vol. 50 No. 2

February, 2001

Table of Contents

Reviews

Recognition, Separation and Concentration of Metal Ions with Chelating Resins or Chelating Reagent Impregnated Resins

Hideyuki Matsunaga 89

Research Papers

Solvent Extraction of Mercury(II) from Nitric and Hydrochloric Acid Solutions by Dihexyl sulfide

Izumi Ishikawa and Taichi Sato 107

Fluorescence Determination of Closed-Shell Rare Earth Metal Ions by Reversed-Phase HPLC with Precolumn Derivatization Using 8-Amino-2-[(2-amino-5-methylphenoxy)methyl]-6-methoxyquinoline-N,N,N',N'-tetraacetate

Shingo Saito, Wen-zhe Xu, Hitoshi Hoshino and Takao Yotsuyanagi 113

Fluorometric Determination of Niobium and Tantalum with Hydrazone Reagents

Kiyotoshi Morishige, Masaki Yoshida, Yoshiaki Yoshitake, Mitsuya Matsumori, Kiyoshi Nishiyama and Hidetoshi Gotoh 119

Determination of Carbendazim and Thiabendazole in Environmental Water Samples Using Solid-Phase Extraction and LC/Electrospray MS/MS

Satoshi Okita, Yoshiaki Ishii and Sun-Ja Yun 127

Fractional Determination of Vanadium(IV) and Vanadium(V) in Water Samples by Graphite-Furnace AAS after Solvent Extraction with 1-Butanol and 8-Mercaptoquinoline

Tokuo Shimizu, Takami Motegi, Makiko Nakano, Hiroshi Kawagauchi and Nobuo Uehara 133

Technical Papers

Precise Determination of Boron in Boron Carbide Powder by Stepwise Pressure Alkali/Acid Decomposition/Mannitol Titration Method

Mitsuyoshi Watanabe 139

Determination of Trace Antimony(III) with Pyrocatechol Violet in Water by Graphite-Furnace AAS after Preconcentration on a Membrane Filter with a Finely Pulverized Anion-Exchange Resin

Junichi Shida and Shigemitsu Umeki 143

Notes

Analysis of Dymron in River-Water Samples Using LC/Sonic Spray Ionization MS

Masako Ishikawa, Shinji Yoshioka and Atsumu Hirabayashi 149

Analyses of ¹-H and ¹³C-NNR Spectra of Methyl(1-indenyl)silane(IV) Compounds

Kazuhiko Oinuma, Ryuzi Mutoh and Chikakiyo Nagata 153

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