不同产地的几种海藻中砷的形态和含量分析
THE SPECIATION AND CONTENTS OF ARSENIC IN SOME ALGAE FROM DIFFERENT REGIONS
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摘要: 采用干法消解和盐酸浸提处理、氢化物原子荧光光谱法对不同产地的几种海藻中的砷进行了形态和含量分析.结果表明,在实验浓度范围内,最低检出限达到0.147μg·1-1,线性相关系数0.9990以上,四种褐藻的精密度在0.74%-4.93%之间,回收率在91.64%-101.62%之间.四种褐藻的总砷和无机砷含量分别在16.58μg·g-1和5.104μg·g-1以上,其中羊栖菜的总砷和无机砷含量最高.
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关键词:
- 砷 /
- 海藻 /
- 氢化物原子荧光光谱法
Abstract: The speciation and contents of arsenic in some algae from different regions was carried out adopting dry digestion process and extracted with HCl preparing samples and hydrid generation-atomic fluorescence spectrometry method, and furthermore, the analysis methods was discussed. Experimental results showed that the LODwas 0.147μg·1-1, the correlation coefficients were mostly above 0.9990, the precision and recovery of the four algae are raging from 0.74%-4.93% , and the average recovery are from 91.64%-101.62% , respectively. Total and inorganic arsenic contents in these algae were all above 16.58μg·g-1 and 5.104 μg·g-1. therein, Sargassum fusiforme has the highest total and inorganic arsenic contents, and the distribution of inorganic arsenic has region difference. -
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