Abstract
The arsenic species present in a dogfish muscle reference material (DORM-1) have been identified by using high-performance liquid chromatography/inductively coupled plasma mass spectrometry (HPLC/ICP-MS), thin-layer chromatography, and electron impact mass spectrometry and quantified by using HPLC/ICP-MS and graphite furnace atomic absorption spectrometry. The major species is arsenobetaine (15.7 +/- 0.8 ..mu..g of As/g of DORM-1), constituting about 84% of the total arsenic. For this species, the HPLC/ICP-MS detection limit was 0.3 ng of As.
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