%0 Journal Article
%T Determination of total arsenic by photo-decomposition of organoarsenic compounds and hydride generation electrothermal atomic absorption spectrometry
%A Han Hengbin
%A Liu Yanbing
%A Zhang Shuzhen Ni ZhemingResearch Center for Eco-Environmental Sciences
%A Chinese Academy of Sciences
%A P O Box
%A Beijing
%A China
%A <br>Han Hengbin
%A Liu Yanbing
%A Zhang Shuzhen
%A Ni Zheming
%J 环境科学学报(英文版)
%D 1993
%I 
%X A method was developed for the determination of total arsenic concentration in less than ng/ml level by decomposition of organoarsenicals using photo -oxidation combined with in situ trapping of arsenic hydride on a palladium coated graphite tube with subsequent atomization and detection by AAS. The organoarsenicals include monomethylarsenic, dimethylarsenic, arsenobetaine, arsenocholine, o -aminobenzenarsenate and p -aminobenzenarsenate. The method is simple and sensitive. Detection limit was obtained from different arsenic compounds over the range from 0. 058 to 0.063 ng/ml as As (based on three times of the standard deviation of 10 blank measurements) and the relative standard deviations for ten replicate measurements were from 2.0 to 3.8%. The calibration curves of arsenic compounds including inorganic and organic arsenicals were linear over the range from 0.1 to 3.0 ng/ml as As. The recommended method has been applied to the determination of total arsenic in tap and lake water samples at ng/ml levels.
%K electrothermal atomic absorption spectrometry
%K photo -decomposition
%K organoarsenic compounds
%K arsenic hydride generation
%K tap/lake water<br>electrothermal
%K atomic
%K absorption
%K spectrometry
%K photo
%K -decomposition
%K organoarsenic
%K compounds
%K arsenic
%K hydride
%K generation
%K tap/lake
%K water
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=C8C1D6AD0A98693B461DB2200B07AE0C&yid=D418FDC97F7C2EBA&vid=94C357A881DFC066&iid=CA4FD0336C81A37A&sid=A4FA325EA800C820&eid=D767283A3B658885&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=0