气候变化领域集成服务门户(CCPortal): Long-term changes in water quality downstream of three abandoned metal mines

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DOI	10.1016/j.jhydrol.2024.131011
	Long-term changes in water quality downstream of three abandoned metal mines
	Todd, Aaron M. L.; Robertson, Iain; Walsh, Rory P. D.; Byrne, Patrick; Edwards, Paul; Williams, Thomas
发表日期	2024
ISSN	0022-1694
EISSN	1879-2707
起始页码	634
卷号	634
英文摘要	Abandoned metal mines pollute rivers with both acidic and circumneutral metal-rich waters, sometimes from well-mapped mines, but often from long-abandoned adits with limited historical records. Changes in water quality over the monitored timescales were calculated for three mines across Wales (Nantymwyn, Parys Mountain and Frongoch), each abandoned since the early 20th century. Using all available spot sampling data provided by the environmental regulator, it was found that there was a sustained input of metals to the receiving watercourses with no or limited reduction in the concentrations from the mines without remediation, despite the passage of time and impacts of weathering. At Nantymwyn, comparison with five months' sampling in 2019 showed no significant change (p > 0.05) in metal concentrations compared to the same months in 1985. Parys Mountain showed an increase in filtered zinc concentrations of 2 % between 2004 and 2020. At Frongoch, however, a substantial reduction in its environmental impact was observed after remediation, including a 90 % reduction in total lead concentrations. Realisation that the pollution from these sites does not reduce over the decades since abandonment should galvanize the resolve to understand the highest priority sites, and where possible remediate them.
英文关键词	Lead mine; Abandoned metal mine; Metal pollution; Water quality; Remediation
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001218662400001
来源期刊	JOURNAL OF HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293930
作者单位	Swansea University; Liverpool John Moores University; Swansea University
推荐引用方式 GB/T 7714	Todd, Aaron M. L.,Robertson, Iain,Walsh, Rory P. D.,et al. Long-term changes in water quality downstream of three abandoned metal mines[J],2024,634.
APA	Todd, Aaron M. L.,Robertson, Iain,Walsh, Rory P. D.,Byrne, Patrick,Edwards, Paul,&Williams, Thomas.(2024).Long-term changes in water quality downstream of three abandoned metal mines.JOURNAL OF HYDROLOGY,634.
MLA	Todd, Aaron M. L.,et al."Long-term changes in water quality downstream of three abandoned metal mines".JOURNAL OF HYDROLOGY 634(2024).