Selective Determination of Inorganic Arsenic (III), (V) and Organic Arsenic in Biological Materials by Solvent Extraction- Atomic Absorption Spectrophotometry
Selective Determination of Inorganic Arsenic (III), (V) and Organic Arsenic in Biological Materials by Solvent Extraction- Atomic Absorption Spectrophotometry
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溶剂萃取-原子吸收分光光度法选择性测定生物材料中的无机砷(III)、(V)和有机砷
DOI：
10.1271/bbb1961.42.2139
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
S. Toda
中科院分区：
文献类型：
--
作者：
A. Yasui;C. Tsutsumi;S. Toda
本文提出了一种选择性测定无机砷（Ⅲ）、（Ⅴ）和有机砷的新方法。将生物材料中砷的每种化学形式溶解在6 N盐酸中。用甲苯从9 N盐酸溶液中萃取无机砷（III），用碘化钾还原后萃取无机砷（V）。有机砷保留在盐酸溶液中。将甲苯溶液中的砷反萃取到水中，用HNO_3、H_2SO_4、HClO_4混合液湿法消解，用原子吸收分光光度法测定砷。将该方法应用于几种藻类、鲨鱼肌肉和果园树叶（NBS SRM 1571）。藻类（裙带菜、细叶菜、花菜）和鲨鱼肌肉中90~ 100%的砷为有机砷，而果园叶片中的砷全部为无机砷。
A new method for the selective determination of inorganic arsenic (III), (V) and organic arsenic has been performed. Each chemical form of arsenic in biological materials was solubilized in 6 n hydrochloric acid. Inorganic arsenic (III) was extracted into toluene from 9 n hydrochloric acid solution, and inorganic arsenic (V) was also extracted after reduction by potassium iodide. Organic arsenic was retained in hydrochloric acid solution. After arsenic in toluene solution was back-extracted into water, aqueous or hydrochloric acid solution containing arsenic was wet digested with a mixture of HNO3, H2S04 and HCIO4, and arsenic was determined by atomic absorption spectrophotometry. The proposed method was applied to some kinds of algaes, shark muscle and orchard leaves (NBS SRM 1571). 90~ 100% of arsenic in algaes (Wakame, Arame, Kazime) and shark muscle was organic, while all the arsenic in orchard leaves was inorganic.