Chemical and sulfur isotopic composition of precipitation in Beijing, China
文献类型：SCI/SSCI论文
| 作者 | Zhu G. X.; Guo, Q. J.; Chen, T. B.; Lang, Y. C.; Peters, M.; Tian, L. Y.; Zhang, H. Z.; Wang, C. Y.; Shao, MA |
| 发表日期 | 2016 |
| 关键词 | Chemical composition Sources Sulfur isotope Precipitation Beijing acid-rain strontium isotope wet precipitation sulfate deposition southwest china northwest china stable-isotope inorganic-ions urban site rainwater |
| 英文摘要 | China is experiencing serious acid rain contamination, with Beijing among the worst-hit areas. To understand the chemical feature and the origin of inorganic ions in precipitation of Beijing, 128 precipitation samples were collected and analyzed for major water-soluble ions and delta S-34. The pH values ranged from 3.68 to 7.81 and showed a volume weighted average value (VWA) of 5.02, with a frequency of acid rain of 26.8 %. The VWA value of electrical conductivity (EC) was 68.6 mu S/cm, which was nearly 4 times higher than the background value of northern China. Ca2+ represented the main cation; SO4 (2-) and NO3 (-) were the dominant anion in precipitation. Our study showed that SO4 (2-) and NO3 (-) originated from coal and fossil fuel combustion; Ca2+, Mg2+, and K+ were from the continental sources. The delta S-34 value of SO4 (2-) in precipitation ranged from +2.1 to +12.8aEuro degrees with an average value of +4.7aEuro degrees. The delta S-34 value showed a winter maximum and a summer minimum tendency, which was mainly associated with temperature-dependent isotope equilibrium fractionation as well as combustion of coal with relatively positive delta S-34 values in winter. Moreover, the delta S-34 values revealed that atmospheric sulfur in Beijing are mainly correlated to coal burning and traffic emission; coal combustion constituted a significant fraction of the SO4 (2-) in winter precipitation. |
| 出处 | Environmental Science and Pollution Research |
| 卷 | 23 |
| 期 | 6 |
| 页 | 5507-5515 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0944-1344 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43967]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhu G. X.,Guo, Q. J.,Chen, T. B.,et al. Chemical and sulfur isotopic composition of precipitation in Beijing, China. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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