Title : Electrolyte-induced ionization suppression and microcystin toxins: ammonium formate suppresses sodium replacement ions and enhances protiated and ammoniated ions for improved specificity in quantitative LC-MS-MS.

Pub. Date : 2009 May 15

PMID : 19374427






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1 This study examines the effects of electrolytes on microcystin (MC) electrospray ionization (ESI) mass spectrometry and quantitative LC-MS-MS. Sodium replacement ions (SRI) are prominent in MC ESI spectra in protic solvents such as HPLC grade methanol. microcystin sorcin Homo sapiens