Mercury and Arsenic - Speciation Analysis by IC-ICP/MS

摘要

Different valence states of mercury and arsenic in the form of inorganic and organic species can be identified in one single IC-ICP/MS run. Species transformations of mercury during sample preparation require the use of specific isotope dilution mass spectrometry (SIDMS). U.S. EPA Method 6800 was applied to evaluate and efficiently compensate for potential errors during measurement. In contrast, the determination of arsenic species in biological and environmental matrices is straightforward. Owing to the absence of interconversions during sample preparation, determination can be performed by traditional speciation analysis down to the sub-ppb level.