萃取分光光度法测定钼，以钼与硫氰酸盐和阿道根形成的离子缔合物为基础。

Extractive-spectrophotometric determination of molybdenum as an ion-association complex with thiocyanate and adogen.

作者信息

Salinas F, Nevado J J, Valenzuela M I

机构信息

Department of Analytical Chemistry, Faculty of Sciences, University of Extremadura, Badajoz, Spain.

出版信息

Talanta. 1985 Jan;32(1):63-5. doi: 10.1016/0039-9140(85)80021-7.

DOI:10.1016/0039-9140(85)80021-7

PMID:18963791

Abstract

A selective and sensitive method is described for the determination of trace amounts of molybdenum, based on its reaction with thiocyanate and its extraction (into toluene) as an ion-association complex formed with adogen (methyltrioctylammonium chloride). The molar absorptivity is 2.13 x 10(4) l.mole(-1).cm(-1) at lambda(max) 467 nm. The method has been applied to molybdenum determination in steels.

摘要

本文描述了一种选择性和灵敏性俱佳的方法，用于测定痕量钼。该方法基于钼与硫氰酸盐的反应，以及其作为与阿道根（甲基三辛基氯化铵）形成的离子缔合络合物被萃取至甲苯中。在467nm的最大吸收波长处，摩尔吸光系数为2.13×10⁴ l·mol⁻¹·cm⁻¹。该方法已应用于钢中钼的测定。