AXIAL DISTRIBUTION OF ARSENIC IN INDIVIDUAL HUMAN HAIRS BY SOLID SAMPLING GRAPHITE-FURNACE AAS
AXIAL DISTRIBUTION OF ARSENIC IN INDIVIDUAL HUMAN HAIRS BY SOLID SAMPLING GRAPHITE-FURNACE AAS
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DOI：
10.1093/jat/18.1.36
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发表时间：
1994-01-01
影响因子：
2.5
通讯作者：
PETERS, CA
中科院分区：
文献类型：
--
作者：
KOONS, RD;PETERS, CA
在砷中毒的情况下，砷沿着头发长度的分布可以用来区分慢性和急性接触。采用固体进样石墨炉原子吸收分光光度法，以Pd-Mg（NO3）2为基体改进剂，分析了5 mm头发中砷的含量。使用砷校准溶液和标准添加到未受污染的头发得到的结果是分析上无法区分的，允许水标准用于头发分析。特征质量为24 pg，3σ检测限约为10 pg。从两个砷中毒受害者的头发中获得的结果与中子活化分析得到的结果吻合得很好。
In cases of arsenic poisoning, the distribution of arsenic along the length of a hair can be used to distinguish between chronic and acute exposure. Individual 5-mm segments of a hair were analyzed for their arsenic content by solid sampling graphite furnace atomic absorption spectrophotometry with a mixed Pd-Mg(N03)2matrix modifier. Results obtained using arsenic calibration solutions and standard additions to uncontaminated hairs are analytically indistinguishable, allowing aqueous standards to be used for hair analysis. The characteristic mass is 24 pg, and the 3σ detection limit is approximately 10 pg. Results obtained for hairs from two victims of arsenic poisoning are in good agreement with those obtained using neutron activation analysis.