微波样品消解-氢化物发生-原子荧光光谱法测定土壤中镉
HG-AFS Determination of Cadmium in Soil with Microwave Assisted Sample Digestion
摘 要
应用氢化物发生-原子荧光光谱法测定了土壤中镉量.样品用王水于微波炉中按所选定的工作条件进行了消化.试验结果表明:镉(Ⅱ)的氢化物发生效率因同时加入8-羟基喹啉及钴(Ⅱ)溶液而明显提高.据此,提出了同时加入以上两种溶液作镉(Ⅱ)氢化反应的增效试剂.该方法的检出限(3s/k)为0.03 μg·L-1.应用此方法分析了土壤样品,所得镉的测定值与已知值相符,测定值的相对标准偏差(n=6)均小于3%.用标准加入法测得方法的回收率在89%~111%之间.
镉
土壤
HG-AFS
Cadmium
Soil
Abstract
The method of HG-AFS was applied to the determination of cadmium in soil.Sample of soil was digested with aqua regia in a microwave oven under optimized working condition.It was found that the efficiency of hydride generation of cadmium was remarkably raised by addition of an appropriate amount of 8-oxine and Co(Ⅱ) ion;hence solutions of 8-oxine and Co(Ⅱ) ion were added as synergistic reagent for hydride generation.Detection limit (3s/k) of the proposed method was found to be 0.03 μg·L-1.In application of the method to analysis of soil samples,the results obtained were in conformity with the known values,and values of RSD′s (n=6) found were less than 3%.Values of recovery found by standard addition method were ranged from 89% to 111%.
中图分类号 O657.31
所属栏目 工作简报
基金项目 西华师范大学科研启动基金(07B005),企业委托项目(G84)
收稿日期 2008/9/23
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备注艾伦弘(1981-),女,四川资阳人,助教,主要从事环境分析化学研究工作.
引用该论文: AI Lun-hong,WANG Mo-hui,ZHU Xia-ping. HG-AFS Determination of Cadmium in Soil with Microwave Assisted Sample Digestion[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(9): 1103～1105
艾伦弘,汪模辉,朱霞萍. 微波样品消解-氢化物发生-原子荧光光谱法测定土壤中镉[J]. 理化检验－化学分册, 2009, 45(9): 1103～1105
被引情况:
【1】蒋小良,张燚昊,莫梁君,叶林,李达光, "冷蒸气发生-原子吸收光谱法测定大米中痕量镉",理化检验－化学分册 47, 574-576(2011)
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参考文献
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【2】朱力,杨大鹏,刘裕婷.微波消解氢化物发生-原子荧光光谱法测定罐头食品中汞和锡[J].理化检验-化学分册,2007,43(3):185-186．
【3】张锂,韩国才.碱性模式氢化物发生原子荧光光谱法测定铁矿石中砷[J].分析测试学报,2006,25(6):120-122．
【4】CHEN Yu-wei,LI Li,ALESSANDRO D,et al. Extraction and determination of elemental selenium in sediments-A comparative study [J].Anal Chim Acta,2006,577(1):126-133．
【5】吴成.氢化物发生-原子荧光光谱法测定土壤中镉[J].光谱学与光谱分析,2003,23(5):999-992．
【6】陈秀娟,洪涛,沈方祥.氢化物发生-原子荧光光谱法测定土壤中的镉[J].分析仪器,2005,3:37-39．
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