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Application of urea adduction technique to polluted urban aerosols for the determination of hydrogen isotopic composition of n-alkanes
| Title: | Application of urea adduction technique to polluted urban aerosols for the determination of hydrogen isotopic composition of n-alkanes |
| Authors: | Yamamoto, Shinya Browse this author | | Kawamura, Kimitaka Browse this author →KAKEN DB |
| Keywords: | hydrogen isotope | | n-alkane | | urban aerosol | | urea adduction |
| Issue Date: | 2012 |
| Publisher: | Taylor & Francis |
| Journal Title: | International Journal of Environmental Analytical Chemistry |
| Volume: | 92 |
| Issue: | 3 |
| Start Page: | 302 |
| End Page: | 312 |
| Publisher DOI: | 10.1080/03067310903045505 |
| Abstract: | We examined an applicability of an improved urea adduction technique for the determination of hydrogen isotopic composition (δD) of homologous series of n-alkanes present in polluted urban aerosols using GC/TC/IRMS. Unresolved complex mixture (UCM) of hydrocarbons that interferes with accurate isotope measurements of n-alkanes was removed from n-alkane fraction by a urea adduction method. Recoveries of C20 to C30 n-alkanes during the urea adduction procedure were greater than 90% when the concentrations of total n-alkanes exceed 6.1 μg/ml. Our compound-specific D/H ratios confirm the absence of significant hydrogen isotope fractionation in n-alkanes during urea adduction and recovery of the purified n-alkane fraction. We applied this technique to the urban aerosols that contain a large quantity of UCM to measure δD of C20 to C35 n-alkanes in urban aerosols from Tokyo and Sapporo with an accuracy less than 10‰. We found that the δD values widely ranged from -38 to -179‰. Based on the δD values of individual n-alkanes in aerosol samples, we can obtain further information on the sources of aerosol n-alkanes and their source regions, and the atmospheric processes such as long-range transport and atmospheric mixing of air masses of different origin. |
| Rights: | This is an electronic version of an article published in Shinya Yamamoto & Kimitaka Kawamura, Application of urea adduction technique to polluted urban aerosols for the determination of hydrogen isotopic composition of n-alkanes, International Journal of Environmental Analytical Chemistry, 92(3), pp.302-312, 2012. International Journal of Environmental Analytical Chemistry is available online at: http://www.informaworld.com/openurl?genre=article&issn=0306-7319&volume=92&issue=3&spage=302 |
| Relation: | http://www.informaworld.com/openurl?genre=article&issn=0306-7319&volume=92&issue=3&spage=302 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/51906 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山本 真也
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