SQUARE-WAVE CATHODIC STRIPPING VOLTAMMETRIC DETERMINATION OF SELENIUM IN SMALL QUANTITIES OF BIOLOGICAL TISSUES

被引：9
|
作者：
PRASAD, PVA [1 ]
ARUNACHALAM, J [1 ]
GANGADHARAN, S [1 ]
机构：
[1] BHABHA ATOM RES CTR, DIV ANALYT CHEM, BOMBAY 400085, INDIA
来源：
ELECTROANALYSIS | 1994年 / 6卷 / 07期
关键词：
SELENIUM; STRIPPING VOLTAMMETRY; BIOLOGICAL TISSUES;
D O I：
10.1002/elan.1140060710
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A sensitive procedure for the determination of selenium in small quantities of biological tissues (5 to 10 mg), using square wave cathodic stripping voltammetry with an in situ formation of Cu2Se on the HMDE, is described. Microwave digestion and clean-room facilities have been used to prevent the loss of analyte and sample contamination. The method has been standardized through the analysis of NIST SRM 1577 bovine liver. The method offers a detection limit of 1 pg/mL. The average precision of determination at 150 pg/mL of Se is 1.8% RSD. This method is highly suitable for the determination of biopsy samples where the quantity available for the analysis is very limited,
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页码：589 / 592
页数：4
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