Wan, D;
Song, L;
Mao, X;
Yang, H;
(2018)
One-century sediment records of heavy metal pollution on the southeast Mongolian Plateau: implications for air pollution trends in China.
Chemosphere
, 220
pp. 539-545.
10.1016/j.chemosphere.2018.12.151.
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Yang 蒙古高原重金属污染记录11-HY.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Historical records of heavy metals from remote areas are important for assessing temporal pollution trends of the regional atmosphere. Based on comparison analyses of heavy metals, Pb isotopes, and total carbon in sediment cores from two relatively remote lakes on the southeast Mongolian Plateau, atmospheric heavy metal pollution trends during ∼1900–2016 were reconstructed. The current anthropogenic fluxes of Zn, Cd and Pb in the region are 11.7, 0.104 and 2.44 mg m−2 yr−1, respectively, close to those in Lake Sayram in West China, but lower than most other records in China. Anthropogenic metal fluxes and 206Pb/207Pb ratios suggest that (1) before ∼1950 atmospheric metal pollution was negligible in the region; (2) since ∼1950, the pollution became detectable but was relatively slight until ∼1980, corresponded with the beginning of socio-economic development after the foundation of China in 1949 and the rapid development after the Reform and Opening-up in 1978; and (3) since ∼2000, atmospheric Pb stopped increasing because of the phasing out of leaded gasoline. Based on comparison and fitting analyses with other sediment records, a similar four-stage evolution picture of atmospheric heavy metals in China over the last century was uncovered. This study indicates rapid increase trends of atmospheric heavy metals in China since ∼1980 associated with economic development.
| Type: | Article |
|---|---|
| Title: | One-century sediment records of heavy metal pollution on the southeast Mongolian Plateau: implications for air pollution trends in China |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.chemosphere.2018.12.151 |
| Publisher version: | https://doi.org/10.1016/j.chemosphere.2018.12.151 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Heavy metals, Air pollution, Atmospheric deposition, Sedimentary record, North China |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10064839 |
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