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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Speciation analysis of inorganic arsenic in coal samples by microwave-assisted extraction and high performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry
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Speciation analysis of inorganic arsenic in coal samples by microwave-assisted extraction and high performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry

机译：微波辅助萃取-高效液相色谱-氢化物发生原子荧光光谱法分析煤中无机砷的形态

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摘要

A new method was developed for the speciation analysis of inorganic arsenic in coal samples by high performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry after microwave-assisted extraction. Effective extract of As(III) and As(V) in coal sample was achieved by 1.0 mol L~(-1)H3PO4 and 0.1 mol L~(-1)ascorbic acid. Under the optimized conditions, the limits of detection (LOD) were 0.01 μg L~(-1) and 0.02 μg L~(-1), the relative standard deviations (RSD) were 2.4% and 3.3% (c=10.0 μg L~(-1), n=7), recoveries were 102.5% and 96.5% for As(III) and As(V). The proposed method was successfully applied for the determination of speciation of inorganic arsenic in coal samples and GBW11117 coal standard reference material with complex matrix.
机译：微波辅助萃取-高效液相色谱-氢化物发生原子荧光光谱法研究了煤样品中无机砷的形态分析新方法。 1.0 mol L〜（-1）H3PO4和0.1 mol L〜（-1）抗坏血酸可有效提取煤样品中的As（III）和As（V）。在最佳条件下，检出限（LOD）为0.01μgL〜（-1）和0.02μgL〜（-1），相对标准偏差（RSD）为2.4％和3.3％（c = 10.0μgL 〜（-1），n = 7），As（III）和As（V）的回收率分别为102.5％和96.5％。该方法成功地用于测定煤样中无机砷的形态以及具有复杂基质的GBW11117煤炭标准参考物质。

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