微波消解样品-电感耦合等离子体质谱法测定土壤中稀土元素
ICP-MS Determination of RE Elements in Soil with Microwave Assisted Sample Digestion
摘 要
土壤样品经硝酸、盐酸、氢氟酸和过氧化氢消解后,采用电感耦合等离子体质谱法测定所得样品溶液中16种稀土元素的含量。选择适当的待测元素的同位素及校正方程克服了质谱干扰,选择铑和铼作为内标元素校正了非质谱干扰。结果表明：方法的检出限(3s)在0.000 4~0.014 0 μg·L-1之间。方法用于土壤标准物质(GBW 07446)中稀土元素的测定,测定值与认定值相符,测定值的相对标准偏差(n=11)均小于5.0%。
电感耦合等离子体质谱法
土壤
稀土元素
Microwave assisted sample digestion
ICP-MS
Soil
Rare earth elements
Abstract
The soil sample was digested with HNO3, HCl, HF and H2O2, and the contents of the 16 RE elements in the sample solution were determined by ICP-MS. Appropriate isotopes of the elements determined were selected and correction equations were used to overcome the mass spectrometric interferences; and Rh and Re were selected as internal standards to overcome the non-mass spectrometric interferences. Values of detection limit (3s) for the 16 RE elements were found in the range of 0.000 4-0.014 0 μg·L-1. The proposed method was applied to the determination of RE elements in a CRM of soil (GBW 07446), giving results in consistency with the certified values and values of RSD′s (n=11) found were less than 5.0%.
中图分类号 O657.63
所属栏目 工作简报
基金项目 国家质检总局科技计划项目(2010QK040)
收稿日期 2012/9/20
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备注高海荣(1983-),女,福建南平人,助理工程师,硕士,主要从事仪器分析及检测工作。
引用该论文: GAO Hai-rong. ICP-MS Determination of RE Elements in Soil with Microwave Assisted Sample Digestion[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2013, 49(10): 1185～1187
高海荣. 微波消解样品-电感耦合等离子体质谱法测定土壤中稀土元素[J]. 理化检验－化学分册, 2013, 49(10): 1185～1187
被引情况:
【1】时晓露,凤海元, "电感耦合等离子体质谱法测定离子型稀土矿中16种离子吸附型稀土元素的含量",理化检验－化学分册 52, 1230-1233(2016)
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参考文献
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【2】吴淑芳,姜玉梅,刘燕,等.电感耦合等离子体质谱法测定土壤中可溶态稀土元素［J］.南昌大学学报:理科版, 2007,31(4):377-379.
【3】龚倩,金高娃,李小蕾,等.电感耦合等离子体质谱法测定海洋贝类中镉、铬、铜和铅［J］.理化检验-化学分册, 2012,48(5):594-596.
【4】王初丹,侯明.电感耦合等离子体质谱法测定地质样品中的稀土、钍元素［J］.桂林理工大学学报, 2011,31(3):454-456.
【5】刘淑君,平庆杰,黄雪琳,等.微波消解样品-电感耦合等离子体质谱法测定面制食品中铝［J］.理化检验-化学分册, 2012,48(9):1030-1036.
【6】孔艳.电感耦合等离子体原子发射光谱法测定油田水中金属元素［J］.理化检验-化学分册, 2012,48(1):114-115.
【7】VANHOE H, GOOSSENS J, MOENS L, et al. Spectral interferences encountered in the analysis of biological materials by inductively coupled plasma mass sepectrometry［J］. Journal of Analytical Atomic Spectrometry, 1994,9(3):177-179.
【8】李文龙,荆淼,陈军辉,等.微波消解-ICP-MS测定40种中药材中的5种有毒元素［J］.分析试验室, 2008,27(2):6-9.
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