ICP-MS法同时测定生活饮用水中铝、锰、铁等14种元素
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摘要
目的建立生活饮用水中铝、锰、铁等14种元素同时测定的ICP-MS方法。方法 Agilent 7 900电感耦合等离子体质谱仪优化后用混合内标校正基体干扰和漂移,标准曲线法定量,对经过前处理的生活饮用水样品中铝、锰、铁、镍、铜、锌、砷、硒、银、镉、钡、汞、铊、铅共14种元素进行同时测定。结果 14种待测元素线性良好,相关系数>0. 999 5,检出限在0.001 438～0.208 8μg/L之间,均低于国家饮用水卫生标准对各元素的标准限值;平行测定两种不同浓度的标准溶液、一份生活饮用水样品及其高、低加标样品中各元素11次,其测定值的相对标准偏差为0.234%～3.72%,加标回收率为90.1%～108.8%。结论该方法高效简便、线性范围宽,结果令人满意,是一种适用于生活饮用水中多种元素同时分析的检测方法。
Objective To establish an ICP-MS method for simultaneous determination of 14 elements of aluminum,manganese and iron in drinking water. Methods Agilent 7 900 inductively coupled plasma mass spectrometer was optimized to correct matrix interference and drift, and the standard curve method was used. A total of 14 elements of aluminium, manganese, iron, nickel, copper, zinc, arsenic, selenium, silver, cadmium, Barium, Mercury, thallium and lead were measured simultaneously in pre-treated drinking water samples. Results 14 elements to be measured had good linearity and correlation coefficient > 0. 999 5, the detection limit is between 0.001 438 μg/L and 0.208 8 μg/L, which is lower than the standard limit for each element of the National drinking water sanitation standard; Parallel determination of two different concentrations of standard solutions, a drinking water sample and 11 elements in its high and low standard samples, the relative standard deviation of the measured value was 0.234 % ～ 3.72 %, and the standard recovery rate was 90.1 % ～ 108.8 %. Conclusions The method is efficient and simple, the linear range is wide, and the result is satisfactory. It is a kind of detection method suitable for the simultaneous analysis of various elements in drinking water.
Objective To establish an ICP-MS method for simultaneous determination of 14 elements of aluminum,manganese and iron in drinking water. Methods Agilent 7 900 inductively coupled plasma mass spectrometer was optimized to correct matrix interference and drift, and the standard curve method was used. A total of 14 elements of aluminium, manganese, iron, nickel, copper, zinc, arsenic, selenium, silver, cadmium, Barium, Mercury, thallium and lead were measured simultaneously in pre-treated drinking water samples. Results 14 elements to be measured had good linearity and correlation coefficient > 0. 999 5, the detection limit is between 0.001 438 μg/L and 0.208 8 μg/L, which is lower than the standard limit for each element of the National drinking water sanitation standard; Parallel determination of two different concentrations of standard solutions, a drinking water sample and 11 elements in its high and low standard samples, the relative standard deviation of the measured value was 0.234 % ～ 3.72 %, and the standard recovery rate was 90.1 % ～ 108.8 %. Conclusions The method is efficient and simple, the linear range is wide, and the result is satisfactory. It is a kind of detection method suitable for the simultaneous analysis of various elements in drinking water.
引文
[1]刘坚,张锋,朱宝立,等.便携式气-质联用仪在职业卫生相关领域应用进展[J].中国职业医学,2012,39(5):440-444.
[2]黄永顺,越飞,夏丽华,等.三氯乙烯药疹样皮炎患者补体3水平降低与肝功能损害关系分析[J].中国职业医学,2014,41(1):36-41.
[3]马国军,赵立峰,楼梦菲,等.微波消解-电感耦合等离子体质谱(ICP-MS)法同时测定人发中10种微量元素[J].中国无机分析化学,2016,6(2):64-68.
[4]刘俩燕,杨敏,黄碧兰.ICP-MS法同时测定生活饮用水的19种元素[J].中国卫生检验杂志,2014,9(24):2614-2616.
[5]中华人民共和国卫生部.生活饮用水标准检验方法:GB/T5749-2006[S].北京:中国标准出版社,2007.
[2]黄永顺,越飞,夏丽华,等.三氯乙烯药疹样皮炎患者补体3水平降低与肝功能损害关系分析[J].中国职业医学,2014,41(1):36-41.
[3]马国军,赵立峰,楼梦菲,等.微波消解-电感耦合等离子体质谱(ICP-MS)法同时测定人发中10种微量元素[J].中国无机分析化学,2016,6(2):64-68.
[4]刘俩燕,杨敏,黄碧兰.ICP-MS法同时测定生活饮用水的19种元素[J].中国卫生检验杂志,2014,9(24):2614-2616.
[5]中华人民共和国卫生部.生活饮用水标准检验方法:GB/T5749-2006[S].北京:中国标准出版社,2007.