DETECTION OF SOME SULFUR ANIONS AND COLLOIDAL SULFUR BY FLAME MOLECULAR-EMISSION SPECTROMETRY

被引：6
|
作者：
HAUGE, S [1 ]
MAROY, K [1 ]
THORLACIUS, A [1 ]
机构：
[1] AGR RES INST,IS-112 REYKJAVIK,ICELAND
来源：
ANALYTICA CHIMICA ACTA | 1991年 / 251卷 / 1-2期
关键词：
EMISSION SPECTROMETRY; FLOW SYSTEM; DIETHYLDITHIOCARBAMATE; MOLECULAR EMISSION SPECTROMETRY; SULFUR;
D O I：
10.1016/0003-2670(91)87136-U
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple flow-injection method was used to compare the disulphur emission from sulphite, thiosulphate, sulphide, thiocyanate, diethyldithiocarbamate and colloidal sulphur with that of sulphate. Counter ions were replaced with hydronium through the use of an in-line ion-exchange column. All the compounds conformed to the second-order calibration relationship already established for sulphate, but with higher emission efficiencies. The estimated detection limits range from 0.1 to 0.8 mg s l-1. The effect on the emission efficiencies of decomposition of the sulphur acids was investigated by comparison with the corresponding ammonium forms. Ammonium ions enhance the disulphur emission, in contrast to the well established depressive interference from metal cations.
引用
收藏
页码：197 / 203
页数：7
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