Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in xi'an, china
文献类型：期刊论文
| 作者 | Cao, JJ; Wu, F; Chow, JC; Lee, SC; Li, Y; Chen, SW; An, ZS; Fung, KK; Watson, JG; Zhu, CS |
| 刊名 | Atmospheric chemistry and physics
 |
| 出版日期 | 2005-11-22 |
| 卷号 | 5页码:3127-3137 |
| ISSN号 | 1680-7324 |
| 通讯作者 | Cao, jj(cao@loess.llqg.ac.cn) |
| 英文摘要 | Continuous measurements of atmospheric organic and elemental carbon (oc and ec) were taken during the high-pollution fall and winter seasons at xi'an, shaanxi province, china from september 2003 through february 2004. battery-powered mini-volume samplers collected pm2.5 samples daily and pm10 samples every third day. samples were also obtained from the plumes of residential coal combustion, motor-vehicle exhaust, and biomass burning sources. these samples were analyzed for oc/ec by thermal/optical reflectance ( tor) following the interagency monitoring of protected visual environments ( improve) protocol. oc and ec levels at xi'an are higher than most urban cities in asia. average pm2.5 oc concentrations in fall and winter were 34.1 +/- 18.0 mu g m(-3) and 61.9 +/- 33.2 mu g m(-3), respectively; while ec concentrations were 11.3 +/- 6.9 mu g m(-3) and 12.3 +/- 5.3 mu g m(-3), respectively. most of the oc and ec were in the pm2.5 fraction. oc was strongly correlated ( r> 0.95) with ec in the autumn and moderately correlated (r= 0.81) with ec during winter. carbonaceous aerosol ( oc x 1.6+ ec) accounted for 48.8% +/- 10.1% of the pm2.5 mass during fall and 45.9 +/- 7.5% during winter. the average oc/ec ratio was 3.3 in fall and 5.1 in winter, with individual oc/ec ratios nearly always exceeding 2.0. the higher wintertime oc/ec corresponded to increased residential coal combustion for heating. total carbon (tc) was associated with source contributions using absolute principal component analysis ( apca) with eight thermally-derived carbon fractions. during fall, 73% of tc was attributed to gasoline engine exhaust, 23% to diesel exhaust, and 4% to biomass burning. during winter, 44% of tc was attributed to gasoline engine exhaust, 44% to coal burning, 9% to biomass burning, and 3% to diesel engine exhaust. |
| WOS关键词 | POSITIVE MATRIX FACTORIZATION ; RIVER DELTA REGION ; SOURCE IDENTIFICATION ; CHEMICAL-COMPOSITION ; AMBIENT PARTICLES ; SOURCE PROFILES ; FINE PARTICLES ; LOESS PLATEAU ; HONG-KONG ; PM2.5 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000233609800001 |
| 出版者 | EUROPEAN GEOSCIENCES UNION |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377188 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cao, JJ |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710075, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Univ Nevada, Desert Res Inst, Reno, NV 89506 USA 4.Hong Kong Polytech Univ, Hong Kong, Hong Kong, Peoples R China 5.Tongji Univ, Shanghai 200092, Peoples R China 6.Atmoslytic Inc, Calabasas, CA USA |
| 推荐引用方式 GB/T 7714 | Cao, JJ,Wu, F,Chow, JC,et al. Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in xi'an, china[J]. Atmospheric chemistry and physics,2005,5:3127-3137. |
| APA | Cao, JJ.,Wu, F.,Chow, JC.,Lee, SC.,Li, Y.,...&Liu, SX.(2005).Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in xi'an, china.Atmospheric chemistry and physics,5,3127-3137. |
| MLA | Cao, JJ,et al."Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in xi'an, china".Atmospheric chemistry and physics 5(2005):3127-3137. |
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来源：中国科学院大学
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