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Identification and quantification of diffuse groundwater pollution in a mineralised watershed

AARON TODD, Iain Robertson Orcid Logo, Patrick Byrne Orcid Logo, Rory Walsh, Tom Williams Orcid Logo, Paul Edwards Orcid Logo

Environmental Science: Water Research and Technology, Volume: 10, Issue: 3, Pages: 668 - 676

Swansea University Authors: AARON TODD, Iain Robertson Orcid Logo, Rory Walsh

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DOI (Published version): 10.1039/d3ew00194f

Abstract

A tracer injection and synoptic sampling experiment was carried out in a tributary catchment of the River Tywi (Carmarthenshire, Wales) during a very low streamflow event to locate and quantify sources of groundwater metal pollution from the abandoned Nantymwyn Pb mine. High resolution sampling at 2...

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Published in: Environmental Science: Water Research and Technology
ISSN: 2053-1400 2053-1419
Published: Royal Society of Chemistry (RSC) 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa65729
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spelling v2 65729 2024-03-03 Identification and quantification of diffuse groundwater pollution in a mineralised watershed 500d8da3b3b6bb2906971d3331bfde99 AARON TODD AARON TODD true false ef8912c57e0140e9ecb2a69b7e34467e 0000-0001-7174-4523 Iain Robertson Iain Robertson true false f3633408adc4dc477955b2eca4c4c9af Rory Walsh Rory Walsh true false 2024-03-03 A tracer injection and synoptic sampling experiment was carried out in a tributary catchment of the River Tywi (Carmarthenshire, Wales) during a very low streamflow event to locate and quantify sources of groundwater metal pollution from the abandoned Nantymwyn Pb mine. High resolution sampling at 22 stream locations and 12 inflows along a 2 km stretch of the Nant y Bai was deployed. This high spatial resolution sampling technique allowed point and diffuse sources of metal pollution to be identified enabling their contribution to the overall stream load to be quantified. It was found that the highest proportion of filtered Zn load originated from diffuse groundwater sources from the upper mine tailings (43%), and that the highest proportion of filtered Pb load originated from diffuse groundwater sources from the lower mine tailings (40%), with smaller inputs from a field on the River Tywi floodplain. These results demonstrate that tracer dilution and synoptic sampling is a powerful tool to locate and apportion diffuse sources of groundwater metal pollution in small, mineralised watersheds. Journal Article Environmental Science: Water Research and Technology 10 3 668 676 Royal Society of Chemistry (RSC) 2053-1400 2053-1419 31 1 2024 2024-01-31 10.1039/d3ew00194f COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) The authors thank the Knowledge Economy Skills Scholarships (KESS 2) for funding AT's PhD, allowing this research to be undertaken. We also thank Ilaria Frau and NRW staff for their assistance with fieldwork. PB acknowledges receipt of a Natural Environment Research Council award (NE/S009507/1). 2024-04-03T12:04:27.7537759 2024-03-03T11:34:55.7584375 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography AARON TODD 1 Iain Robertson 0000-0001-7174-4523 2 Patrick Byrne 0000-0002-2699-052x 3 Rory Walsh 4 Tom Williams 0000-0002-9502-1378 5 Paul Edwards 0000-0003-3227-0921 6 65729__29884__3cc378c19ee14279b8a73c535575c553.pdf 65729.VOR.pdf 2024-04-03T11:52:32.3984951 Output 2615409 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution license (CC-BY). true eng http://creativecommons.org/licenses/by/3.0/
title Identification and quantification of diffuse groundwater pollution in a mineralised watershed
spellingShingle Identification and quantification of diffuse groundwater pollution in a mineralised watershed
AARON TODD
Iain Robertson
Rory Walsh
title_short Identification and quantification of diffuse groundwater pollution in a mineralised watershed
title_full Identification and quantification of diffuse groundwater pollution in a mineralised watershed
title_fullStr Identification and quantification of diffuse groundwater pollution in a mineralised watershed
title_full_unstemmed Identification and quantification of diffuse groundwater pollution in a mineralised watershed
title_sort Identification and quantification of diffuse groundwater pollution in a mineralised watershed
author_id_str_mv 500d8da3b3b6bb2906971d3331bfde99
ef8912c57e0140e9ecb2a69b7e34467e
f3633408adc4dc477955b2eca4c4c9af
author_id_fullname_str_mv 500d8da3b3b6bb2906971d3331bfde99_***_AARON TODD
ef8912c57e0140e9ecb2a69b7e34467e_***_Iain Robertson
f3633408adc4dc477955b2eca4c4c9af_***_Rory Walsh
author AARON TODD
Iain Robertson
Rory Walsh
author2 AARON TODD
Iain Robertson
Patrick Byrne
Rory Walsh
Tom Williams
Paul Edwards
format Journal article
container_title Environmental Science: Water Research and Technology
container_volume 10
container_issue 3
container_start_page 668
publishDate 2024
institution Swansea University
issn 2053-1400
2053-1419
doi_str_mv 10.1039/d3ew00194f
publisher Royal Society of Chemistry (RSC)
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
active_str 0
description A tracer injection and synoptic sampling experiment was carried out in a tributary catchment of the River Tywi (Carmarthenshire, Wales) during a very low streamflow event to locate and quantify sources of groundwater metal pollution from the abandoned Nantymwyn Pb mine. High resolution sampling at 22 stream locations and 12 inflows along a 2 km stretch of the Nant y Bai was deployed. This high spatial resolution sampling technique allowed point and diffuse sources of metal pollution to be identified enabling their contribution to the overall stream load to be quantified. It was found that the highest proportion of filtered Zn load originated from diffuse groundwater sources from the upper mine tailings (43%), and that the highest proportion of filtered Pb load originated from diffuse groundwater sources from the lower mine tailings (40%), with smaller inputs from a field on the River Tywi floodplain. These results demonstrate that tracer dilution and synoptic sampling is a powerful tool to locate and apportion diffuse sources of groundwater metal pollution in small, mineralised watersheds.
published_date 2024-01-31T12:04:25Z
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