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Tytuł:
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Assessing the Legacy of Red Mud Pollution in a Shallow Freshwater Lake: Arsenic Accumulation and Speciation in Macrophytes.
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Autorzy:
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Olszewska JP; Centre for Ecology & Hydrology (CEH Edinburgh), Bush Estate , Penicuik EH26 0QB, Scotland, United Kingdom.; School of GeoSciences, The University of Edinburgh , Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, Scotland, United Kingdom.
Meharg AA; Institute for Global Food Security, Queen's University Belfast , Belfast BT9 5HN, United Kingdom.
Heal KV; School of GeoSciences, The University of Edinburgh , Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, Scotland, United Kingdom.
Carey M; Institute for Global Food Security, Queen's University Belfast , Belfast BT9 5HN, United Kingdom.
Gunn ID; Centre for Ecology & Hydrology (CEH Edinburgh), Bush Estate , Penicuik EH26 0QB, Scotland, United Kingdom.
Searle KR; Centre for Ecology & Hydrology (CEH Edinburgh), Bush Estate , Penicuik EH26 0QB, Scotland, United Kingdom.
Winfield IJ; Lake Ecosystems Group, Centre for Ecology & Hydrology (CEH Lancaster), Lancaster Environment Centre , Library Avenue, Bailrigg, Lancaster LA1 4AP, United Kingdom.
Spears BM; Centre for Ecology & Hydrology (CEH Edinburgh), Bush Estate , Penicuik EH26 0QB, Scotland, United Kingdom.
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Źródło:
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Environmental science & technology [Environ Sci Technol] 2016 Sep 06; Vol. 50 (17), pp. 9044-52. Date of Electronic Publication: 2016 Aug 15.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Publication: Washington DC : American Chemical Society
Original Publication: Easton, Pa. : American Chemical Society, c1967-
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MeSH Terms:
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Arsenic*
Lakes*
Environmental Monitoring ; Food Chain ; Plants
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Substance Nomenclature:
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N712M78A8G (Arsenic)
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Entry Date(s):
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Date Created: 20160715 Date Completed: 20170719 Latest Revision: 20180524
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Update Code:
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20240104
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DOI:
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10.1021/acs.est.6b00942
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PMID:
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27415607
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Little is known about long-term ecological responses in lakes following red mud pollution. Among red mud contaminants, arsenic (As) is of considerable concern. Determination of the species of As accumulated in aquatic organisms provides important information about the biogeochemical cycling of the element and transfer through the aquatic food-web to higher organisms. We used coupled ion chromatography and inductively coupled plasma mass spectrometry (ICP-MS) to assess As speciation in tissues of five macrophyte taxa in Kinghorn Loch, U.K., 30 years following the diversion of red mud pollution from the lake. Toxic inorganic As was the dominant species in the studied macrophytes, with As species concentrations varying with macrophyte taxon and tissue type. The highest As content measured in roots of Persicaria amphibia (L.) Gray (87.2 mg kg(-1)) greatly exceeded the 3-10 mg kg(-1) range suggested as a potential phytotoxic level. Accumulation of toxic As species by plants suggested toxicological risk to higher organisms known to utilize macrophytes as a food source.