AUTOMATED-DETERMINATION OF SULFIDE BY GAS-PHASE MOLECULAR ABSORPTION SPECTROMETRY

被引：17

作者：

AROWOLO, TA ^{[1
]}

CRESSER, MS ^{[1
]}

机构：

[1] UNIV ABERDEEN,DEPT PLANT & SOIL SCI,MESTON BLDG,ABERDEEN AB9 2UE,SCOTLAND

来源：

ANALYST | 1991年 / 116卷 / 06期

关键词：

GAS-PHASE MOLECULAR ABSORPTION SPECTROMETRY; AUTOMATED SULFIDE DETERMINATION; SULFATE-SULFUR IN PLANTS;

D O I：

10.1039/an9911600595

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An automated method for the determination of sulphide in solution that involves the interfacing of an automatic sampler, a proportioning pump and a gas-liquid separator to an atomic absorption spectrometer is described. Sulphide ions react with 3 mol dm-3 hydrochloric acid and the released hydrogen sulphide is swept into a gas-liquid separator by an air stream. The absorbance was measured at 200 nm using a deuterium hollow cathode lamp. The method is relatively free from interference with a detection limit for sulphide of 0.06-mu-g ml-1 and relative standard deviations of 1.4-3.3% for repeated analyses. The calibration graph is linear up to 100-mu-g ml-1 of sulphide. Twenty samples can be analysed in 1 h. The method has been applied to the determination of sulphate-sulphur in plants.

引用

页码：595 / 599

页数：5

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