THIN-LAYER CHROMATOGRAPHIC-SEPARATION OF HALOGENATED FUMIGANTS AS AMMONIUM HALIDES AND THEIR SUBSEQUENT DETERMINATION BY MECA

被引：8

作者：

ABDELKADER, MHK ^{[1
]}

PEACH, ME ^{[1
]}

RAGAB, MHT ^{[1
]}

STILES, DA ^{[1
]}

机构：

[1] ACADIA UNIV,DEPT CHEM,WOLFVILLE B0P 1X0,NS,CANADA

来源：

ANALYTICAL LETTERS PART A-CHEMICAL ANALYSIS | 1979年 / 12卷 / 13期

关键词：

bromide; chloride; Flame spectroscopy; indium; MECA; organohalogen fumigant; TLC;

D O I：

10.1080/00032717908067929

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method is described for the determination of several pesticides containing bromine and chlorine by molecular emission cavity analysis (MECA). The pesticides were decomposed in an oxygen flask and the combustion products dissolved in aqueous ammonia. The ammonium halides were separated by TLC using microcrystalline cellulose adsorbent. After scraping from the TLC plates and dissolving in water the separated components were quantitated by MECA using either the InBr (λmax=376nm) or the InCl (λmax = 360 nm) emission bands. Recoveries of over 96% were obtained. Soils fortified with 1, 2-dibromo-3-chloropropane at level s of 5-25 ppm were extracted using shaking and distillation procedures. Subsequent analysis showed that the shaking extraction gave a recovery of 92% compared to 85% from acid refluxing. Copyright © 1979 by Marcel Dekker, Inc.

引用

页码：1399 / 1410

页数：12

共 20 条

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