硫代硫酸盐络合物萃取分光光度法测定钼。

Spectrophotometric determination of molybdenum by extraction of its thiosulphate complex.

机构信息

Chemistry Department, Kurukshetra University, Kurukshetra, 132119, India.

出版信息

Talanta. 1974 Dec;21(12):1308-11. doi: 10.1016/0039-9140(74)80157-8.

Abstract

A simple and rapid spectrophotometric determination of molybdenum is described. The molybdenum thiosulphate complex is extracted into isoamyl alcohol from 1.0-1.5M hydrochloric acid containing 36-40 mg of Na(2)S(2)O(3).5H(2)O per ml. The absorbance at lambda(max) = 475 nm obeys Beer's law over the range 0-32 microg of Mo per ml of solvent phase. Up to 5 mg/ml of Ti(IV), V(V), Cr(VI), Fe(III), Co(II), Ni(II), U(VI), W(VI), Sb(III), 1 mg/ml of Cu(II), Sn(II), Bi(V) and 10 microg/ml of Pt(IV) and Pd(II) do not interfere. Large amounts of complexing agents interfere. The method has been applied to analysis of synthetic and industrial samples.

摘要

本文描述了一种简单快速的分光光度法测定钼。在含有 36-40mgNa(2)S(2)O(3)·5H(2)O/毫升的 1.0-1.5M 盐酸中，钼的硫代硫酸盐络合物被萃取到异戊醇中。在溶剂相中，当摩尔数为 0-32μg 时，在 λ(max) = 475nm 处的吸光度遵守比尔定律。高达 5mg/ml 的 Ti(IV)、V(V)、Cr(VI)、Fe(III)、Co(II)、Ni(II)、U(VI)、W(VI)、Sb(III)、1mg/ml 的 Cu(II)、Sn(II)、Bi(V)和 10μg/ml 的 Pt(IV)和 Pd(II)不干扰。大量的络合剂会干扰。该方法已应用于合成和工业样品的分析。