Optimization of microwave digestion for mercury determination in marine biological samples by cold vapour atomic absorption spectrometry

被引：7

作者：

Cardellicchio, Nicola ^{[1
]}

Di Leo, Antonella ^{[1
]}

Giandomenico, Santina ^{[1
]}

Santoro, Stefania ^{[1
]}

机构：

[1] CNR, Ist Ambiente Marino Costiero, Sede Taranto, I-74100 Taranto, Italy

来源：

ANNALI DI CHIMICA | 2006年 / 96卷 / 3-4期

关键词：

D O I：

10.1002/adic.200690016

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Optimization of acid digestion method for mercury determination in marine biological samples (dolphin liver, fish and mussel tissues) using a closed vessel microwave sample preparation is presented. Five digestion procedures with different acid mixtures were investigated: the best results were obtained when the microwave-assisted digestion was based on sample dissolution with HNO3-H2SO4-K2Cr2O7 mixture. A comparison between microwave digestion and conventional reflux digestion shows there are considerable losses of mercury in the open digestion system. The microwave digestion method has been tested satisfactorily using two certified reference materials. Analytical results show a good agreement with certified values. The microwave digestion proved to be a reliable and rapid method for decomposition of biological samples in mercury determination.

引用

页码：159 / 165

页数：7

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