Analysis of ultratrace triorganotin compounds in aquatic organisms by using capillary electrophoresis-inductively coupled plasma mass spectrometry.
Analysis of ultratrace triorganotin compounds in aquatic organisms by using capillary electrophoresis-inductively coupled plasma mass spectrometry.
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DOI：
10.1016/j.talanta.2009.10.043
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发表时间：
2010-03
期刊：
影响因子：
6.1
通讯作者：
Guidi Yang;Jinhua Xu;Liangjun Xu;Guonan Chen;Fengfu Fu
中科院分区：
文献类型：
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作者：
Guidi Yang;Jinhua Xu;Liangjun Xu;Guonan Chen;Fengfu Fu
本文首次建立了微波辅助提取水生物中痕量三有机锡的方法和毛细管电泳-电感耦合等离子体质谱法测定超痕量三有机锡（即三甲基锡、三乙基锡、三丙基锡和三丁基锡）的灵敏分析方法。该提取方法简单、有效，可在数min内提取水生物中痕量三有机锡。该分析方法对三有机锡化合物的检出限低得多，为0.2 ~ 0.7 ngsn /mL，可直接测定水生物中痕量三有机锡，无需衍生化和预富集。采用上述方法，在17min内成功地测定了砂藻和水藻干燥液中的三甲基锡、三乙基锡、三丙基锡和三丁基锡，回收率为93-104%，RSD（相对标准偏差，n=6）为2-5%。结果表明，沙藻中含有极高的三丁基锡含量，干重达5.1μgSn/g，可能是海洋有机锡污染的良好生物标志物。
A microwave-assisted extraction used to extract trace triorganotin from aquatic organisms and a sensitive analytical method for the determination of ultratrace triorganotin (namely trimethyltin, triethyltin, tripropyltin and tributyltin) with capillary electrophoresis–inductively coupled plasma mass spectrometry were firstly described in this study. The extraction method is simple, effective and can be used to extract trace triorganotin in aquatic organisms within several min. The analytical method has a much lower detection limit of 0.2–0.7ngSn/mL for triorganotin compounds, and can be used to determine trace triorganotin in aquatic organisms directly without any derivatization and preconcentration. Using above methods, we have successfully determined trimethyltin, triethyltin, tripropyltin and tributyltin in dried Mya arenaria Linnaeus and Corbicula fluminea within 17min with a recovery of 93–104% and a RSD (relative standard deviation, n=6) of 2–5%. Our results showed that dried M. arenaria Linnaeus contained an extremely high tributyltin of 5.1μgSn/g dried weight, indicating that it may be a good biomarker for the organotin pollution in ocean.