Suppression of the Incoherent Molecular Formation Effect by Oxygen Gas in Arsenic Analysis by ICP-MS

Narukawa, Tomohiro; Chiba, Koichi

doi:10.2116/analsci.30.609

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Collision/reaction Cell Gas System (Crc)1

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“…Regarding the detection of toxic elements, As is well known for its spectral overlap with the interfering ArCl + and ArK + species, and its monoisotopic nature poses additional limitations on tackling the spectral , so the detection is then conducted by monitoring the AsO + signal which is free from common spectral interference. 25,26 Secondly, CH 4 has been employed in two ways. First, it has been used to form the AsCH 2 + adduct to avoid monitoring the parent As + isotope at m/z ratios where there is severe interference.…”

Section: Collision/reaction Cell Gas System (Crc)mentioning

confidence: 99%