The conditions of high resolution mass spectrometry (HRMS) for determination of trace seven kinds of PCBs were investigated. Several HRMS parameters were optimized by determination of noise to signal of these PCBs und...The conditions of high resolution mass spectrometry (HRMS) for determination of trace seven kinds of PCBs were investigated. Several HRMS parameters were optimized by determination of noise to signal of these PCBs under different resolution, emission electron energy and so on. The detection limits ranged from 10-30fg at 10 000 resolution.These PCBs in two sea products were tested at this condition.展开更多
文摘The conditions of high resolution mass spectrometry (HRMS) for determination of trace seven kinds of PCBs were investigated. Several HRMS parameters were optimized by determination of noise to signal of these PCBs under different resolution, emission electron energy and so on. The detection limits ranged from 10-30fg at 10 000 resolution.These PCBs in two sea products were tested at this condition.
