Organic and inorganic sampling artefacts assessment

摘要: Abstract During collection on filter-based aerosol samplers, organic and inorganic compounds both contribute to positive negative artefacts, significantly affecting chemical analyses results for single species PM mass concentrations. Up now, studies or artefacts have been conducted in Europe but very scarce data are available a study. The field study was carried out Milan, which is located the Po valley (Northern Italy) one of major pollution hot spots Europe. As sampling depend many factors, such as filter type, face velocity, duration, ambient conditions, this two different types considered (i.e. quartz fibre filters Teflon filters) assessment during seasons (performing also some samplings at flow-rates). Results showed that due OC adsorption accounted 39% measured concentration summer, 23% winter. Negative artefact nitrate volatilisation by 51% 22% no negligible losses were observed A significant improvement comparability obtained parallel taking into account estimates performed