快速消解ICP-MS法测定土壤中痕量镉及其干扰消除
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摘要
建立了快速消解-电感耦合等离子体质谱法(ICP-MS)测定土壤中痕量镉的分析方法,选择~(114)Cd谱线扣除~(118)Sn的光谱干扰,用~(103)Rh做内标进行检测。该法检出限为0.002 mg/kg,精密度为2.9%～4.6%,加标回收率为89.7%～106.6%,方法准确可靠、高效环保,适用于大批量土壤样品的分析。
A method to determine concentrations of trace amounts of cadmium in soil by inductively coupled plasma mass spectrometry(ICP-MS)with rapid digestion was developed.The ~(114)Cd spectral lines were selected to eliminate line interference of ~(118)Sn,and the ~(103)Rh was used as internal standard.The detection limit was 0.002 mg/kg,the relative standard deviation were 2.9%-4.6%,and the recoveries rate were 89.7%-106.6%.The detection method was accurate,reliable,efficient and environmental friendly,which was suitable for the analysis of large batches of soil samples.
A method to determine concentrations of trace amounts of cadmium in soil by inductively coupled plasma mass spectrometry(ICP-MS)with rapid digestion was developed.The ~(114)Cd spectral lines were selected to eliminate line interference of ~(118)Sn,and the ~(103)Rh was used as internal standard.The detection limit was 0.002 mg/kg,the relative standard deviation were 2.9%-4.6%,and the recoveries rate were 89.7%-106.6%.The detection method was accurate,reliable,efficient and environmental friendly,which was suitable for the analysis of large batches of soil samples.
引文
[1]陈卫平,杨阳,谢天,等.中国农田土壤重金属污染防治挑战与对策[J]土壤学报,2018,55(2):1-12.
[2]冯先进,屈太原.电感耦合等离子体质谱法(ICP-MS)最新应用进展[J].中国无机分析化学,2011,1(1):46-52.
[3]郑乃迅.电感耦合等离子体质谱法在测定土壤中的应用探讨[J].科技创新与应用,2017(9):66-67.
[4]赵志南,陈观宇,杨仁康.土壤样品快速消解与ICP-MS测定条件的优化[J].环境化学,2017,36(6):1428-1431.
[5]JAVIS K E,GRAY A L,HOUK R S.Handbook of inductively coupled plasma mass spectrometry[M].Beijing:Atomic Energy Press,1997:113.
[6]刘虎生,邵宏翔.电感耦合等离子体质谱技术与应用[M].北京:化学工业出版社,2005:274.
[2]冯先进,屈太原.电感耦合等离子体质谱法(ICP-MS)最新应用进展[J].中国无机分析化学,2011,1(1):46-52.
[3]郑乃迅.电感耦合等离子体质谱法在测定土壤中的应用探讨[J].科技创新与应用,2017(9):66-67.
[4]赵志南,陈观宇,杨仁康.土壤样品快速消解与ICP-MS测定条件的优化[J].环境化学,2017,36(6):1428-1431.
[5]JAVIS K E,GRAY A L,HOUK R S.Handbook of inductively coupled plasma mass spectrometry[M].Beijing:Atomic Energy Press,1997:113.
[6]刘虎生,邵宏翔.电感耦合等离子体质谱技术与应用[M].北京:化学工业出版社,2005:274.