氢化物发生-原子荧光光谱法测定人发中砷
HG-AFS Determination of Arsenic in Human Hair
摘 要
采用氢化物发生-原子荧光光谱法测定人发样品中砷的含量.样品经硝酸-高氯酸(10+1)混合酸消解,以盐酸(5+95)溶液为反应介质,20 g·L-1硼氢化钾-5 g·L-1氢氧化钾的混合溶液为还原剂.对测定的影响因素:仪器的负高压、灯电流、载气和屏蔽气的流量;预还原剂的浓度,共存离子的干扰等试验条件作了研究并予以优化.方法的检出限(3s)为0.006 0 μg·g-1.应用此法对标准物质(GBW 07601)进行分析,测定值与标准值相一致.
人发
砷
HG-AFS
Human hair
Arsenic
Abstract
HG-AFS was applied to the determination of arsenic in human hair.Sample was digested with mixture of HNO3 and HClO4(10+1),and determined in a medium of HCl(5+95) solution using the mixed solution of 20 g·L-1 KBH4 and 5 g·L-1 KOH as reducing reagent.Influential factors,including negative high-voltage,lamp current,the flow-rates of carrier gas and shielding gas,concentration of pre-reduction agent,and interferences of coexisting ions were studied and optimized.Detection limit (3s) of the method found was 0.006 0 μg·g-1.The proposed method was applied to the analysis of a standard reference material (GBW 07601),giving results in consistency with standard values.
中图分类号 O657.31
所属栏目 工作简报
基金项目 中国科学院知识创新工程重要方向项目(kzcx2-yw-102);国家自然科学基金项目(40525011,40632011,40740440016);贵州省科学技术基金项目(黔科合J字[2007]2172号)
收稿日期 2009/5/28
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备注刘碧君(1979-),女,四川仁寿人,博士,主要研究方向为环境地球化学.
引用该论文: LIU Bi-jun,WU Feng-chang,DENG Qiu-jing,MO Chang-li,FU Zhi-you,ZHU Jing,LI Wen. HG-AFS Determination of Arsenic in Human Hair[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2010, 46(7): 775～777
刘碧君,吴丰昌,邓秋静,莫昌琍,符志友,朱静,黎文. 氢化物发生-原子荧光光谱法测定人发中砷[J]. 理化检验－化学分册, 2010, 46(7): 775～777
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参考文献
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【6】任永胜,马红琼,李军,等.氢化物发生-原子荧光光谱法测定黄磷中微量砷[J].理化检验-化学分册,2007,43:564-566．
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【10】李立波,谢华林,蒋宏伟.室外大气颗粒物中痕量砷和锑测定的研究[J].工业安全与环保,2003,29(12):27-28．
【2】WEI Chao-yang,WANG Cheng,SUN Xin,et al.Arsenic accumulation by ferns: a field survey in southern China[J].Environmental Geochemistry and Health,2007,29:169-177．
【3】GAUTAM S,RAMESH S,TARIT R,et al.Arsenic and other elements in hair,nails,and skin-scales of arsenic victims in west bengal,india[J].Science of the Total Environment,2004,326(1/3):33-47．
【4】BATZEVICH V A.Hair trace element analysis in human ecology studies[J].Science of the Total Environment,1995,164:89-98．
【5】LI Zhong-xi,GUO Yue-an.Simultaneous determination of trace arsenic,antimony,bismuth and selenium in biological samples by hydride generation-four-channel atomic fluorescence spectrometry[J].Talanta,2005,65:1318-1325．
【6】任永胜,马红琼,李军,等.氢化物发生-原子荧光光谱法测定黄磷中微量砷[J].理化检验-化学分册,2007,43:564-566．
【7】刘碧君,吴丰昌,邓秋静,等.锡矿山矿区和贵阳市人发中锑、砷和汞的污染特征[J].环境科学,2009,30(3):907-912．
【8】曹杰山.氢化物发生-原子荧光法测定生活垃圾堆肥产品中砷[J].中国环境监测,2008,24:37-39．
【9】许珺辉,陈敏,王洪玮,等.人发中砷含量的氢化物发生-原子荧光测定方法的研究[J].中国卫生检验杂志,2004,14(1):8-9．
【10】李立波,谢华林,蒋宏伟.室外大气颗粒物中痕量砷和锑测定的研究[J].工业安全与环保,2003,29(12):27-28．
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