A NOVEL VOLTAGE-ASSISTED PAPER SPRAY-APPI-HRMS METHOD FOR THE SCREENING AND QUANTIFICATION OF SEMI-VOLATILE FLUORINATED COMPOUNDS

摘要

Paper spray (PS) mass spectrometry is a fast ionization technique widely used for the detection of polar compounds mainly based in ESI ionization mechanisms. To improve the ionization of non-polar or low polar compounds, the traditional PS technique has been modified for the direct analysis of semi-volatile fluorinated pollutants by ambient-HRMS [1]in negative ionization mode using atmospheric pressure photoionization (APPI)[2].