Journal of Chromatography A 2012-06-22

Liquid chromatography coupled to tandem mass spectrometry for the residue determination of ethylenethiourea (ETU) and propylenethiourea (PTU) in water

Cristina Ripollés, Juan V. Sancho, Francisco J. López, Félix Hernández, Cristina Ripollés, Juan V. Sancho, Francisco J. López, Félix Hernández

Index: J. Chromatogr. A. 1243 , 53-61, (2012)

Full Text: HTML

Abstract

Highlights ► Dithiocarbamates degradation products ETU and PTU are determined at sub-ppb levels in water. ► Rapid ETU and PTU determination by direct injection in UHPLC–MS/MS QqQ (LOD 0.058μg/L). ► Alternative on-line SPE-LC–MS/MS can be used for ETU in water samples (LOD 0.027μg/L). ► Strong matrix effects observed are corrected for ETU using its own deuterated analyte as ILIS. ► Non satisfactory correction for PTU using PTU-d6 reveals that analyte ILIS may have different chemical behaviour.