Response of mercury accumulation to anthropogenic pollution in the past 1000 years based on Lake Huguangyan sediments, Southern China

被引:12
|
作者
Li, Tianhang [1 ]
Zhong, Wei [1 ,2 ]
Wei, Zhiqiang
Shang, Shengtan [1 ]
Ye, Susu [3 ]
Chen, Yuanhan [1 ]
Pan, Junyu [1 ]
Wang, Xiaojun [1 ]
机构
[1] South China Normal Univ, Sch Geog Sci, Guangzhou 510631, Peoples R China
[2] Beijing Normal Univ Zhuhai, Zhuhai Branch, State Key Lab Earth Surface Proc & Resource Ecol, Zhuhai 519087, Peoples R China
[3] Guangdong Ctr Marine Dev Res, Guangzhou 510220, Peoples R China
关键词
Sediments of Huguangyan Lake; Mercury accumulation; Atmospheric deposition; Anthropologic pollution; ATMOSPHERIC MERCURY; ENVIRONMENTAL-CHANGE; ORGANIC-MATTER; MAAR LAKE; DEPOSITION; FLUXES; RECORD; PEAT; CONTAMINATION; EMISSIONS;
D O I
10.1007/s10653-021-00878-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A new Pb-210-dated record of Hg accumulation derived from a sediment core from a Hg-enriched area in Huguangyan Lake (HGY) in South China is presented. Based on synthetic analyses of multi-proxy records including chemical composition, total organic matter, and grain-size distribution in surface sediments and nearby soil samples, it is inferred that the influx of Hg into the lake is mainly a result of atmospheric deposition, with no or minor hydroclimate-induced lithogenic input from the catchment and limited adsorption effects of organic matter and clay. Significantly enhanced anthropogenic input of Hg started in the early 1900s. Since then, several anomalies of Hg accumulation have been the results of wars or intensified economic activities in China. HGY sediments provide a rare and reliable natural archive for detecting atmospheric Hg deposition, which is closely related to anthropogenic activities.
引用
收藏
页码:3921 / 3933
页数:13
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