From:  Determination of citrinin and sterigmatocystin in human urine: a risk assessment of citrinin exposure in the Valencian population

 Spectrometric and chromatographic parameters used for CIT and STG determination.

CompoundPrecursor ionQ1 (m/z)Tube lens (V)Q3 (m/z)CE (V)Rt (min)
CIT[M + MeOH]281.049249.3192.3
205.027
CIT-13C13[M + MeOH]294.137262.2192.3
STG[M + H]+325.089281.0451.6
310.125
STG-13C18[M + H]+342.943327.3331.6

CE: collision energy; CIT: citrinin; MeOH: methanol; Q1: parent ion; Q3: product ion; Rt: retention time; STG: sterigmatocystin.