Heavy Metals in Surface Sediment of Plateau Lakes in Tibet, China: Occurrence, Risk Assessment, and Potential Sources

被引：8
作者：
Su, Qiongyuan [1 ]
Shahab, Asfandyar [2 ]
Huang, Liangliang [1 ,3 ]
Ubaid Ali, Muhammad [4 ]
Cheng, Yanan [2 ]
Yang, Jiahuan [1 ]
Xu, Hao [1 ]
Sun, Zhicheng [5 ]
Zou, Qi [6 ]
Chen, Zhongbing [7 ]
Kang, Bin [5 ]
机构：
[1] Guilin Univ Technol, Coll Environm Sci & Engn, Guilin 541004, Peoples R China
[2] Guangxi Collaborat Innovat Ctr Water Pollut Contro, Guilin 541004, Peoples R China
[3] Guangxi Key Lab Environm Pollut Control Theory & T, Guilin 541004, Peoples R China
[4] Southern Fed Univ, Dept Soil Sci, Rostov Na Donu 344006, Russia
[5] Ocean Univ China, Coll Fisheries, Qingdao 266100, Peoples R China
[6] Gannan Med Univ, Sch Publ Hlth & Hlth Management, Ganzhou 341000, Peoples R China
[7] Czech Univ Life Sci Prague, Fac Environm Sci, Dept Appl Ecol, Kamycka 129, Prague 16500, Czech Republic
来源：
TOXICS | 2023年 / 11卷 / 10期
关键词：
heavy metals; sediment in Tibetan lakes; risk assessment; natural contribution; anthropogenic activities; ECOLOGICAL RISK; SPATIAL-DISTRIBUTION; MULTIVARIATE-ANALYSIS; SOURCE IDENTIFICATION; SOURCE APPORTIONMENT; CHEMICAL-FRACTIONS; TRACE-ELEMENTS; HEALTH-RISK; POLLUTION; RIVER;
D O I：
10.3390/toxics11100804
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Tibetan Plateau lakes have high ecological value and play a crucial role in maintaining ecological balance. This research aimed to study the pollution characteristics, ecological risk, and potential sources of eight heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in the surface sediments of 12 Tibetan Plateau lakes. The results of the toxicity risk index (TRI) showed that only Gongzhu Tso (28.09) and La' ang Tso (20.25) had heavy metals that could pose a very high risk of toxicity to aquatic organisms. Hg posed the highest potential ecological risk to aquatic organisms. Based on the results of multiple analyses, we inferred that the contents of Cr, Cu, Hg, and Ni in sediments of Tibetan lakes were influenced by industrial and agricultural development; Cd, Pb, and Zn were influenced by transport and atmospheric transport; and As was derived from geothermal activity and rock weathering.
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页数：16
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