The species or chemical form of elements determines their mobility, bioavailability and toxicity. Liquid chromatography or ion chromatography allow a separation of these species. The subsequent detection by mass spectrometry provides a highly sensitive method for their quantification. Hence, LC-ICP-MS and IC-ICP-MS provide an essential tool for assessing benefits and/or risks of elements present in the sample. An element can be essential and toxic just based on the oxidation state or compound in which it occurs. Thus, food samples like seafish, rice or chocolate, apple juice and other foods and beverages are controlled by LC-ICP-MS for arsenic, selenium or chromium species present
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