Selective Spectrophotometric Method for the Determination of Mercury(II) in Water Samples

被引：1

作者：

Lilhare, Surbhi ^{[1
]}

Mathew, Sunitha B. ^{[1
]}

Singh, Ajaya K. ^{[1
]}

Carabineiro, Sonia A. C. ^{[2
]}

机构：

[1] Govt VYT PG Autonomous Coll, Dept Chem, Durg 491001, Chhattisgarh, India

[2] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Chem, LAQV REQUIMTE, P-2829516 Caparica, Portugal

来源：

ANALYTICAL CHEMISTRY LETTERS | 2020年 / 10卷 / 05期

关键词：

Mercury; iodine; leucocrystal violet; spectrophotometry; TRACE AMOUNTS; EXPOSURE; REAGENT; SPECTROMETRY; EXTRACTION; PLANT; HG2+; SOIL;

D O I：

10.1080/22297928.2020.1844046

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple spectrophotometric method is proposed for the rapid determination of mercury(II). The procedure is based on the hydrolysis of iodine in the presence of Hg(II), resulting in the formation of hypoiodous acid, which selectively oxidizes leucocrystal violet to crystal violet. The obtained violet dye shows maximum absorbance at 590 nm. Beer's law was valid in the concentration range of 0-1.0 & mu;g mL(-1). The effects of different parameters, i.e., pH, time, temperature were studied. The molar absorptivity for the system was 1.49x10(5) L mol(-1) cm(-1). The detection limit and the quantification limit were 2.6x10(-3) & mu;g mL(-1) and 0.8x10(-2) & mu;g mL(-1), respectively. The proposed method is simple, selective and was successfully applied for the determination of mercury(II) in several water samples.

引用

页码：654 / 666

页数：13

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