氢化物发生-原子吸收光谱法测定锑(Ⅲ)和锑(Ⅴ)
Determination of Sb(Ⅲ) and Sb(Ⅴ) by Atomic Absorption Spectrometry with Hydride Generation
摘 要
提出在酸性条件下以氟化钠为掩蔽剂测定锑(Ⅲ),在碱性介质中加入氟化钠消除价态的影响测定锑总量,两者相减求出锑(Ⅴ),实现对锑(Ⅲ)和锑(Ⅴ)的分别测定.研究了在酸性介质中测定锑(Ⅲ)及碱性介质中测定锑总量的条件及共存离子的干扰和消除.工作曲线的线性范围为:0~20 μg·L-1锑(Ⅲ);0~80 μg·L-1锑(Ⅴ),相关系数大于0.999,方法的检出限为0.31 μg·L-1锑(Ⅲ),0.69 μg·L-1锑(Ⅴ).对水样和土壤样品进行了测定,相对标准偏差(RSD)小于5%.
锑(Ⅴ)
测定
氢化物发生-原子吸收光谱法
Sb(Ⅲ)
Sb(Ⅴ)
Determination
HG-AAS
Abstract
A method of hydride generation atomic absorption spectrometry for the determination of Sb(Ⅲ) and Sb(Ⅴ) was proposed in this paper.Sodium fluoride as masking agent was added both in acidic hydride generation (HG) mode for determining Sb(Ⅲ) and in alkaline HG mode for determining total Sb.Antimony(Ⅴ) was obtained via calculation of difference.The optimum conditions for Sb(Ⅲ) and total Sb determinations and interferences of the coexisting ions were systematically studied.Linearity of the calibration curves was ranged in 0~20 μg·L-1 for acidic HG mode and 0~80 μg·L-1 for alkaline HG mode,respectively,with detection limit of 0.31 μg·L-1 for Sb(Ⅲ) and 0.69 μg·L-1 for Sb(Ⅴ),respectively.The method has been used to determine Sb(Ⅲ) and Sb(Ⅴ) in water and soil samples with satisfactory results and RSD′s less than 5%.
中图分类号 O657.31
所属栏目 工作简报
基金项目
收稿日期 2006/10/20
修改稿日期
网络出版日期
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备注李建强(1964-),男,河北涿州市人,硕士,副教授,主要从事光谱及复杂物质分析工作.
引用该论文: LI Jian-qiang,ZHOU Jing-tao,SONG Xin-rong. Determination of Sb(Ⅲ) and Sb(Ⅴ) by Atomic Absorption Spectrometry with Hydride Generation[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(2): 168～170
李建强,周景涛,宋欣荣. 氢化物发生-原子吸收光谱法测定锑(Ⅲ)和锑(Ⅴ)[J]. 理化检验－化学分册, 2008, 44(2): 168～170
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参考文献
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【3】梅俊,王秀季,汤志勇,等.氢化物发生原子荧光光谱法测定土壤中水溶态锑(Ⅲ)和锑(Ⅴ)[J].分析试验室,2004,23(3):31-33．
【4】梅俊,吴少尉,汤志勇,等.氢化物发生原子荧光光谱法测定土壤中络合态锑[J].岩矿测试,2002,24(4):275-278．
【5】李建强,郑延军,柴成文.碱性氢化物发生原子吸收法测定钢铁中的微量铅[J].北京科技大学学报,2004,26(6):608-611．
【2】季海冰,赵承易,何孟常.氢化物发生结合电感耦合等离子体原子发射光谱法测定天然水样中Sb(Ⅲ)和Sb(Ⅴ)[J].理化检验-化学分册,2004,40(7):410-412．
【3】梅俊,王秀季,汤志勇,等.氢化物发生原子荧光光谱法测定土壤中水溶态锑(Ⅲ)和锑(Ⅴ)[J].分析试验室,2004,23(3):31-33．
【4】梅俊,吴少尉,汤志勇,等.氢化物发生原子荧光光谱法测定土壤中络合态锑[J].岩矿测试,2002,24(4):275-278．
【5】李建强,郑延军,柴成文.碱性氢化物发生原子吸收法测定钢铁中的微量铅[J].北京科技大学学报,2004,26(6):608-611．
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