Sampling artifact estimates for alkanes, hopanes, and aliphatic carboxylic acids
作者： Tanasri Sihabut , Joshua Ray , Amanda Northcross , Stephen R. McDow
DOI: 10.1016/J.ATMOSENV.2005.02.053
关键词: Mass spectrometry 、 Gas chromatography 、 Chemistry 、 Chromatography 、 Hopanoids 、 Carboxylic acid 、 Fraction (chemistry) 、 Aerosol 、 Particulates 、 Hydrocarbon
摘要: Abstract Sampling artifacts for molecular markers from organic speciation of particulate matter were investigated by analyzing forty-one samples collected in Philadelphia as a part the Northeast Oxidant and Particulate Study (NEOPS). Samples using high volume sampler with two quartz fiber filters series. n-Alkanes (C23–C31), hopanes (C27–C31), n-alkanoic acids (C10–C22) analyzed gas chromatography-mass spectrometry (GCMS). The extent artifact error was dependent on vapor pressure species concentration. are classified into following three categories: (1) amount backup filter often large fraction front (n-alkanes C23 C24, n-carboxylic C10–C14); (2) consistently small C25–C28, C27–C30, C15–C18, dicarboxylic C3–C9); (3) rarely observed C29–C31, C31 C32).
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