文章基本信息

标题：Determination of Sulfate in Environmental Water by Spectrophotometric Flow Injection Analysis
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作者：Takashi KORENAGA ; Yi YANG ; Kensuke SHIBATA 等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1998
卷号：44
期号：1
页码：49-53
DOI：10.1248/jhs1956.44.49
出版社：The Pharmaceutical Society of Japan
摘要：Sulfate ion in environmental water was determined by flow injection analysis using barium-dimethylsulfonazo-III complex as the reagent at a rate of 12 samples per hour. The linearity and sensitivity were investigated using ethanol-or dimethyl sulfoxide (DMSO)-water as solvent, respectively. DMSO-water medium was beneficial in the determination of a low concentration of sulfate below 3 mg l^-1. The calibration curve was linear in the range of 0.1-7 mg l^-1 with the correlation coefficient of 0.999. The detection limit was 0.1 mg l^-1. The relative standard deviation for 10 injections of SO₄^2- (5 mg l^-1) was 1.8%. The results of actual sample analysis agreed satisfactorily with those obtained by ion chromatography.
关键词：sulfate;dimethylsulfonazo-III;flow injection analysis;environmental water;acid rain.