کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9458759 | 1311294 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Perfluorodecalin: global warming potential and first detection in the atmosphere
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
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چکیده انگلیسی
Perfluorodecalin (C10F18) has a range of medical uses that have led to small releases. Recently, it has been proposed as a carrier of vaccines, which could lead to significantly larger emissions. Since its emissions are controlled under the Kyoto Protocol, it is important that values for the global warming potential (GWP) are available. For a 50:50 mixture of the two isomers of perfluorodecalin, laboratory measurements, supplemented by theoretical calculations, give an integrated absorption cross-section of 3.91Ã10â16Â cm2Â moleculeâ1Â cmâ1 over the spectral region 0-1500Â cmâ1; calculations yield a radiative efficiency of 0.56Â WÂ mâ2Â ppbvâ1 and a 100-year GWP, relative to carbon dioxide, of 7200 assuming a lifetime of 1000 years. We report the first atmospheric measurements of perfluorodecalin, at Bristol, UK and Mace Head, Ireland, where volume mixing ratios are about 1.5Ã10â15. At these concentrations, it makes a trivial contribution to climate change, but on a per molecule basis it is a potent greenhouse gas, indicating the need for careful assessment of its possible future usage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 39, Issue 9, March 2005, Pages 1759-1763
Journal: Atmospheric Environment - Volume 39, Issue 9, March 2005, Pages 1759-1763
نویسندگان
Keith P. Shine, Laila K. Gohar, Michael D. Hurley, George Marston, Damian Martin, Peter G. Simmonds, Timothy J. Wallington, Matt Watkins,