An Assessment of Metal Pollution in the Surface Sediments of an East Antarctic Lake

被引:5
|
作者
Joju, G. S. [1 ]
Warrier, Anish Kumar [1 ]
Sali, A. S. Yamuna [1 ]
Chaparro, Marcos A. E. [2 ,3 ]
Mahesh, B. S. [4 ]
Amrutha, K. [1 ]
Balakrishna, K. [1 ]
Mohan, Rahul [4 ]
机构
[1] Manipal Acad Higher Educ, Manipal Inst Technol, Dept Civil Engn, Manipal, India
[2] UNCPBA, UNCPBA CICPBA CONICET, CONICET, CICPBA, Tandil, Argentina
[3] Univ Nacl Ctr Prov Buenos Aires UNCPBA, Fac Ciencias Exactas, IFAS, Buenos Aires, DF, Argentina
[4] Natl Ctr Polar & Ocean Res, Antarctic Sci Div, Vasco Da Gama, Goa, India
来源
SOIL & SEDIMENT CONTAMINATION | 2024年 / 33卷 / 08期
关键词
East Antarctica; environmental pollution; lake sediments; sediment quality guidelines; metal concentration; chemical weathering; SCHIRMACHER OASIS; HEAVY-METALS; LARSEMANN HILLS; TRACE-METALS; CONTAMINATION; SOILS; GEOCHEMISTRY; INDEX; RIVER; COMPONENTS;
D O I
10.1080/15320383.2024.2323516
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study discusses the metal concentrations and sedimentological data from Lake L55, a dried, land-locked lake from Schirmacher Oasis, East Antarctica. Toxic metals in sediments are a major threat to the environment. Twenty-five surface sediment samples were analyzed for the presence of fifteen metals. The sedimentological data indicates that the sediments are predominantly sandy with low concentrations of silt and clay. The chemical weathering index for the sediments reflects low degree of weathering. Negligible concentrations of organic content were present in the sediments owing to the cold and dry conditions of the study area. The environmental pollution indices indicate elevated concentrations of Ba, Zn, As and Pb in the sediments. Barium could be supplied by the weathering of the quartzofeldspathic catchment rocks, while Zn, As and Pb could be supplied from the fuel burning for power generation and logistical activities, paint residue, and battery waste. The sediment quality guidelines were calculated for the sediments, and they indicate that the sediments have a 21% risk of being toxic. The pollution load index, potential ecological risk index (PERI) and toxic risk index (TRI) values suggest low toxic risk in the sediments of the lake.
引用
收藏
页码:1674 / 1695
页数:22
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