Chemical and sulfur isotopic characteristics of precipitation in a representative urban site, South China: implication for anthropogenic influences
文献类型：期刊论文
| 作者 | Zheng, Fangwen; Rao, Wenbo; Chu, Xiaodong; Bai, Hua; Jiang, Sanyuan |
| 刊名 | AIR QUALITY ATMOSPHERE AND HEALTH
 |
| 出版日期 | 2020 |
| 卷号 | 13期号:3页码:349-359 |
| 英文摘要 | Nanchang, the capital of Jiangxi Province, is a major constituent of the South China Acid Rain Zone. In this study, the chemical and sulfur isotopic compositions of precipitation in this region were investigated during 2015-2016 to clarify the origin of major chemicals. The pH was < 5.6 for 72.6% of precipitation events, reflecting the predominance of acid rain. SO42-, Ca2+, NH4+, and NO3- were the four main ions, occupying 77% of the total ions in precipitation. SO42- and NO3- were the dominant acidifying species while Ca2+ and NH4+ were the dominant neutralizing species. Overall, the concentrations of ions in precipitation were lower in the rainy months than in other months. Compared with foreign cities, the concentrations of ions in precipitation, particularly SO42- and NO3-, were significantly higher in Nanchang, indicating the effect of anthropogenic pollution. Factor analyses showed that in precipitation, anthropogenic pollutants controlled SO42-, NO3-, and NH4+ whereas K+, Mg2+, and Ca2+ originated from rock weathering, and Cl- was dominantly of marine origin. Based on the sulfur isotope data, it was further found that precipitation SO42- was associated with the use of northern Chinese coal in Nanchang and homogeneous oxidation was a major mechanism affecting delta S-34 fluctuations in precipitation SO42- with time. This work provides deep insights into the formation of acid rain and is helpful for guiding air quality protection in South China. |
| 源URL | [http://159.226.73.51/handle/332005/19888]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Zheng, Fangwen,Rao, Wenbo,Chu, Xiaodong,et al. Chemical and sulfur isotopic characteristics of precipitation in a representative urban site, South China: implication for anthropogenic influences[J]. AIR QUALITY ATMOSPHERE AND HEALTH,2020,13(3):349-359. |
| APA | Zheng, Fangwen,Rao, Wenbo,Chu, Xiaodong,Bai, Hua,&Jiang, Sanyuan.(2020).Chemical and sulfur isotopic characteristics of precipitation in a representative urban site, South China: implication for anthropogenic influences.AIR QUALITY ATMOSPHERE AND HEALTH,13(3),349-359. |
| MLA | Zheng, Fangwen,et al."Chemical and sulfur isotopic characteristics of precipitation in a representative urban site, South China: implication for anthropogenic influences".AIR QUALITY ATMOSPHERE AND HEALTH 13.3(2020):349-359. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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