用芦丁和十六烷基三甲基溴化铵分光光度法测定钨（VI）

Spectrophtometric determination of tungsten(VI) with rutin and cetyltrimethylammonium bromide.

作者信息

Xu M, Parker G A

机构信息

Department of Chemistry, Central South University of Technology, Changsha, Hunan 410012, People's Republic of China.

出版信息

Talanta. 1987 May;34(5):512-4. doi: 10.1016/0039-9140(87)80173-x.

DOI:10.1016/0039-9140(87)80173-x

PMID:18964348

Abstract

Tungsten-(VI) reacts with rutin in the presence of cetyltrimethylammonium bromide to form a soluble yellow complex having maximum absorbance at 416 nm. The molar ratio of tungsten to rutin in the complex is 1:2. The molar absorptivity is 5.01 x 10(4) 1.mole(-1).cm(-1). Beer's law is obeyed over the range 1 x 10(-7)(-1) x 10(-5)M tungsten (VI). Optimum solution conditions for the determination of tungsten in various sample matrices have been found and the interference of diverse ions has been examined.

摘要

在溴化十六烷基三甲基铵存在下，钨（VI）与芦丁反应形成一种可溶性黄色络合物，该络合物在416nm处有最大吸收。络合物中钨与芦丁的摩尔比为1:2。摩尔吸光系数为5.01×10⁴ L·mol⁻¹·cm⁻¹。在1×10⁻⁷ - 1×10⁻⁵ M钨（VI）范围内遵守比尔定律。已找到测定各种样品基质中钨的最佳溶液条件，并研究了多种离子的干扰情况。