Spectrophotometric determination of chromium(VI) by extraction of the dichromate anion into propylene carbonate

被引：9
|
作者：
Burns, DT [1 ]
Dangolle, CDF [1 ]
机构：
[1] Queens Univ Belfast, Dept Analyt Chem, Belfast BT9 5AG, Antrim, North Ireland
来源：
ANALYTICA CHIMICA ACTA | 1997年 / 356卷 / 2-3期
关键词：
spectrophotometry; chromium; propylene carbonate; dichromate extraction;
D O I：
10.1016/S0003-2670(97)00456-X
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Chromium(VI) (0-120 mu g) can be determined spectrophotometrically st 362 nm after its extraction as dihydrogen dichromate into propylene carbonate. The effects of acidity and diverse ions are reported. The relative standard deviation for the determination of 60 mu g Cr(VI) was 0.81% (n = 9). The system has been applied io the determination of chromium in steel (0.2-4% w/w Cr). (C) 1997 Elsevier Science B.V.
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页码：145 / 148
页数：4
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