A NEW AND SENSITIVE SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF PHORATE

被引：0

作者：

SUNITA, G ^{[1
]}

GUPTA, VK ^{[1
]}

机构：

[1] PT RAVISHANKAR SHUKLA UNIV, SCH STUDIES CHEM, RAIPUR 492010, MADHYA PRADESH, INDIA

来源：

CHEMIA ANALITYCZNA | 1995年 / 40卷 / 02期

关键词：

PHORATE DETERMINATION; SPECTROPHOTOMETRY; PHLOROGLUCINOL; ENVIRONMENTAL SAMPLES;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A highly selective, sensitive and rapid spectrophotometric method for the determination of phorate, a widely used systemic insecticide is proposed. The analysis is based on the oxidation of phorate to sulphones and its hydrolysis by acidified potassium permanganate at similar to 100 degrees C to release formaldehyde. The formaldehyde released is trapped in an absorbing solution of phloroglucinol and sodium hydroxide to produce orange red colour which has an absorbance maximum at 475 nm. Beer's law is obeyed in the range 15-100 mu g (0.6-4 ppm) per 25 ml of the final solution of phorate. Other analytical parameters for the determination of phorate have been optimised.

引用

页码：219 / 223

页数：5

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