DETERMINATION OF SELENIUM IN FRUIT JUICES BY FLOW-INJECTION ELECTROTHERMAL ATOMIZATION ATOMIC-ABSORPTION SPECTROMETRY

被引：19

作者：

ARRUDA, MAZ ^{[1
]}

GALLEGO, M ^{[1
]}

VALCARCEL, M ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC SCI,DEPT ANALYT CHEM,E-14004 CORDOBA,SPAIN

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1994年 / 9卷 / 05期

关键词：

SELENIUM DETERMINATION; FRUIT JUICE ANALYSIS; ELECTROTHERMAL ATOMIZATION; ATOMIC ABSORPTION SPECTROMETRY; SLURRY ATOMIZATION; FLOW INJECTION; CONTINUOUS FILTRATION;

D O I：

10.1039/ja9940900657

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An automatic flow injection method for the determination of Se in fruit juices by electrothermal atomization atomic absorption spectrometry is proposed. The flow manifoid used, which is coupled to the autosampler cup, enables dilution of the slurry, addition of a chemical modifier and the determination of Se in the filtered liquid phase. The effects of various chemical modifiers, furnace temperatures and major foreign ions present in fruits were investigated. Selenium was successfully determined in fruit and tomato juice by using the standard additions method (juice samples were diluted 10-fold) with a relative standard deviation of 4.5-12.0%. The limit of detection (3s(b)) of the proposed method is 5 mug l-1.

引用

页码：657 / 662

页数：6

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