Japanese source

Abstract

Various contaminants might be frequently detected in high-performance liquid chromatography/ mass spectrometry (LC/MS) experiments. This makes highly accurate qualitative and quantitative analyses of LC/MS difficult. It is necessary to know the identification and origin of the contaminants to prevent them from being mixed. In the present work, we paid attention to any contaminants eluted from vials, septa and syringe filters used for an automatic sampling device and filtration preparation in LC/MS experiments. Some contaminants were identified by LC/MS and MS/MS analysis. In addition, we could specify the contaminant source. © 2009 The Japan Society for Analytical Chemistry.