聚氨酯泡沫塑料吸附-电感耦合等离子体质谱法测定化探样品中的微量金
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摘要
试样经王水分解后,加入三氯化铁溶液3.0 m L,聚氨酯泡沫塑料吸附,低浓度硫脲溶液解脱,电感耦合等离子体质谱仪测定化探样品中的微量金。实验结果表明,该方法金测定范围为0.10~500.00 ng/g,测定结果的相对标准偏差为8.33%~9.01%,加入标准物质回收率为94.0%~108.0%。该方法操作简单、耗时短、检出限低、精密度和准确度良好。
The samples were digested by aqua regia,with 3.0 m L iron trichloride added to the solution.After the solution being adsorbed to polyurethane foam plastics and then desorbed by thiourea,inductively coupled plasma mass spectrometry was proposed as the analytical method to measure the trace gold in geological samples.The results suggest that the measurement range of this method is 0.10 to 500.00 ng/g,the RSD is between 8.33 % and 9.01 %,and the recovery ranges from 94.0 % to 108.0 %.This method takes short time,is easy to operate and has low detection limit,high precision and accuracy.
The samples were digested by aqua regia,with 3.0 m L iron trichloride added to the solution.After the solution being adsorbed to polyurethane foam plastics and then desorbed by thiourea,inductively coupled plasma mass spectrometry was proposed as the analytical method to measure the trace gold in geological samples.The results suggest that the measurement range of this method is 0.10 to 500.00 ng/g,the RSD is between 8.33 % and 9.01 %,and the recovery ranges from 94.0 % to 108.0 %.This method takes short time,is easy to operate and has low detection limit,high precision and accuracy.
引文
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[2]李淑兰,王仁寿.石墨炉无火焰原子吸收法测定矿石中ppb级痕量金[J].黄金,1987,8(6):58-60.
[3]樊勇,修凤凤,韩一帆.电感耦合等离子体质谱(ICP-MS)法测定地球化学样品中的痕量金[J].中国无机分析化学,2017,7(2):18-21.
[4]任志海.小火试金分离富集ICP-MS法测定地质样品中的金、铂、钯[D].长春:吉林大学,2013.
[5]李丹,王锝,李彪.717阴离子交换树脂富集-电感耦合等离子体质谱法测定地质样品中痕量金铂钯[J].冶金分析,2011,31(4):14-19.
[6]王琳,唐志中,来新泽,等.混合吸附剂分离富集-电感耦合等离子体质谱法测定地质样品中铂钯金[J].岩矿测试,2013,32(3):420-426.
[7]李曼,李东雷,刘玺祥,等.ICP-MS测定水系沉积物和土壤中的W、Mo等金属元素[J].质谱学报,2006,27(2):99-103,109.
[8]陈景伟,李玉明,宋双喜,等.载炭泡塑吸附-电感耦合等离子体发射光谱法测定金矿石的金量[J].岩矿测试,2015,34(3):314-318.