Application of an integrated biomarker response index to assess ground water contamination in the vicinity of a rare earth mine tailings site
| Autor: | Xuefeng Zhang, Donghui Gong, Juan Liu, Si Wantong, Ai-Ling Li, He Xiaoying, Liu Jumei, Shen Weishou, Li Liu, Jisheng Li |
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| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
Male Health Toxicology and Mutagenesis Rare earth 010501 environmental sciences Dispersion (geology) 01 natural sciences Chromosome aberration Mining Rats Sprague-Dawley 03 medical and health sciences Groundwater pollution Metals Heavy Environmental Chemistry Ecotoxicology Animals Groundwater 0105 earth and related environmental sciences Pollutant Environmental engineering General Medicine Pollution Tailings Rats 030104 developmental biology Environmental chemistry Environmental science Metals Rare Earth Biomarkers Water Pollutants Chemical |
| Zdroj: | Environmental science and pollution research international. 23(17) |
| ISSN: | 1614-7499 |
| Popis: | We utilized a multi-biomarker approach (Integrated Biomarker Response version 2, IBRv2) to investigate the scope and dispersion of groundwater contamination surrounding a rare earth mine tailings impoundment. Parameters of SD rat included in our IBRv2 analyses were glutathione levels, superoxide dismutase, catalase, and glutathione peroxidase activities, total anti-oxidative capacity, chromosome aberration, and micronucleus formation. The concentration of 20 pollutants including Cl(-), SO4 (2-), Na(+), K(+), Mg(2+), Ca(2+), TH, CODMn, As, Se, TDS, Be, Mn, Co, Ni, Cu, Zn, Mo, Cd, and Pb in the groundwater were also analyzed. The results of this study indicated that groundwater polluted by tailings impoundment leakage exhibited significant ecotoxicological effects. The selected biomarkers responded sensitively to groundwater pollution. Analyses showed a significant relationship between IBRv2 values and the Nemerow composite index. IBRv2 could serve as a sensitive ecotoxicological diagnosis method for assessing groundwater contamination in the vicinity of rare earth mine tailings. According to the trend of IBRv2 value and Nemerow composite index, the maximum diffusion distance of groundwater pollutants from rare earth mine tailings was approximately 5.7 km. |
| Databáze: | OpenAIRE |
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