Effects of acid-washing filter treatment on quantification of aerosol organic compounds |
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| Institution: | 1. Institute for Marine and Atmospheric Research Utrecht, Utrecht University, PO box 80005, 3508 TA, the Netherlands;2. Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, the Netherlands;3. University of Groningen, the Netherlands;1. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;2. Fudan-Tyndall Center, Fudan University, Shanghai 200433, China;3. Department of Chemistry, Carleton College, Northfield, MN 55057, USA;1. Johannes Gutenberg-University Mainz, Institute for Inorganic and Analytical Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany;2. Johannes Gutenberg-University Mainz, Institute for Organic Chemistry, Duesbergweg 10-14, 55128 Mainz, Germany;3. Atmospheric Chemistry Department, Max-Planck Institute for Chemistry, 55020 Mainz, Germany;1. Division of Life and Environmental Sciences, University of Yamanashi, 4-4-37, Takeda, Kofu, 400-8510, Japan;2. Graduate School of Environmental Studies, Nagoya University, 510, Furocho, Chikusa-ku, Nagoya, 464-0814, Japan |
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| Abstract: | The tests of standard mixtures and four sets of atmospheric particulate samples showed that an acid-wash (AW) pretreatment of fluorocarbon-coated glass fiber filters prior to aerosol sampling enhanced the quantifiable organic compounds for more than 29% (or 66 ng m?3); in particular, 47–273 ng m?3 (21–366%) more water-soluble organic compounds (WSOCs) were measured. When the acid-pretreated filters were employed, up to nine more organic species were measured in the individual daily samples. Because the acid pretreatment reduced the metal contaminants in the glass fiber filters, using the AW filters for aerosol sampling allows higher extraction recoveries of organic compounds. Since the fingerprinting compounds were more accurately determined when the aerosol samples were collected on the AW filters, better assessment of emission sources and toxicity of air pollutants can be obtained. |
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