用氯化苄基三乙铵萃取分光光度法测定痕量铁（III）

Extractive spectrophotometric determination of trace amounts of iron(III) with benzyltriethylammonium chloride.

作者信息

Bayan K C, Das H K

机构信息

Department of Chemistry, Gauhati University, Guwahati 781014, India.

出版信息

Talanta. 1988 Jan;35(1):57-8. doi: 10.1016/0039-9140(88)80012-2.

DOI:10.1016/0039-9140(88)80012-2

PMID:18964465

Abstract

The ion-association complex formed between a thiocyanato-iron(III) ion and a benzyltriethylammonium ion is extracted into 1,2-dichloroethane, and its absorbance at 476 nm is used for determination of the iron. Beer's law is obeyed up to about 4 mug/ml iron concentration in the final solution. The molar absorptivity is 2.79 x 10(4) l.mole(-1).cm(-1).

摘要

硫氰酸铁（III）离子与苄基三乙铵离子形成的离子缔合物被萃取到1,2 - 二氯乙烷中，利用其在476 nm处的吸光度来测定铁。在最终溶液中铁浓度高达约4 μg/ml时符合比尔定律。摩尔吸光系数为2.79×10⁴ l·mol⁻¹·cm⁻¹。