Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils
The fern Pityrogramma calomelanos is a hyperaccumulator of arsenic that grows readily on arsenic-contaminated soils in the Ron Phibun district of southern Thailand. P. calomelanos accumulates arsenic mostly in the fronds (up to 8350 μg As g-1dry mass) while the rhizoids contain the lowest concentrat...
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th-mahidol.201702018-07-24T09:59:59Z Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils Kevin Francesconi Pornsawan Visoottiviseth Weeraphan Sridokchan Walter Goessler Syddansk Universitet Mahidol University Karl-Franzens-Universitat Graz Environmental Science The fern Pityrogramma calomelanos is a hyperaccumulator of arsenic that grows readily on arsenic-contaminated soils in the Ron Phibun district of southern Thailand. P. calomelanos accumulates arsenic mostly in the fronds (up to 8350 μg As g-1dry mass) while the rhizoids contain the lowest concentrations of arsenic (88-310 μg As g-1dry mass). The arsenic species in aqueous extracts of the fern and soil were determined by high performance liquid chromatography coupled to an inductively coupled plasma mass spectrometer (HPLC-ICPMS) which served as an arsenic specific detector. Only a small part of the arsenic (6.1-12%) in soil was extracted into water, and most of this arsenic (>97%) was present as arsenate. The arsenic in the fern rhizoids was approximately 60% water-extractable, 95% of which was present as arsenate. In contrast, arsenic in the fern fronds was readily extracted into water (86-93%) and was present mainly as arsenite (60-72%) with the remainder being arsenate. Methylarsonate and dimethylarsinate were detected as trace constituents in only two fern samples. Preliminary estimates of phytoremediation potential suggest that P. calomelanos might remove approximately 2% of the soil arsenic load per year. With due consideration to the type of arsenic compounds present in the fern, and their water-solubility, the option of disposing high arsenic ferns at sea is raised for discussion. Copyright © 2002 Elsevier Science B.V. 2018-07-24T02:59:59Z 2018-07-24T02:59:59Z 2002-02-04 Article Science of the Total Environment. Vol.284, No.1-3 (2002), 27-35 10.1016/S0048-9697(01)00854-3 00489697 2-s2.0-0037016860 https://repository.li.mahidol.ac.th/handle/123456789/20170 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0037016860&origin=inward |
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Environmental Science Kevin Francesconi Pornsawan Visoottiviseth Weeraphan Sridokchan Walter Goessler Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
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The fern Pityrogramma calomelanos is a hyperaccumulator of arsenic that grows readily on arsenic-contaminated soils in the Ron Phibun district of southern Thailand. P. calomelanos accumulates arsenic mostly in the fronds (up to 8350 μg As g-1dry mass) while the rhizoids contain the lowest concentrations of arsenic (88-310 μg As g-1dry mass). The arsenic species in aqueous extracts of the fern and soil were determined by high performance liquid chromatography coupled to an inductively coupled plasma mass spectrometer (HPLC-ICPMS) which served as an arsenic specific detector. Only a small part of the arsenic (6.1-12%) in soil was extracted into water, and most of this arsenic (>97%) was present as arsenate. The arsenic in the fern rhizoids was approximately 60% water-extractable, 95% of which was present as arsenate. In contrast, arsenic in the fern fronds was readily extracted into water (86-93%) and was present mainly as arsenite (60-72%) with the remainder being arsenate. Methylarsonate and dimethylarsinate were detected as trace constituents in only two fern samples. Preliminary estimates of phytoremediation potential suggest that P. calomelanos might remove approximately 2% of the soil arsenic load per year. With due consideration to the type of arsenic compounds present in the fern, and their water-solubility, the option of disposing high arsenic ferns at sea is raised for discussion. Copyright © 2002 Elsevier Science B.V. |
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Syddansk Universitet |
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Syddansk Universitet Kevin Francesconi Pornsawan Visoottiviseth Weeraphan Sridokchan Walter Goessler |
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Article |
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Kevin Francesconi Pornsawan Visoottiviseth Weeraphan Sridokchan Walter Goessler |
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Kevin Francesconi |
title |
Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
title_short |
Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
title_full |
Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
title_fullStr |
Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
title_full_unstemmed |
Arsenic species in an arsenic hyperaccumulating fern, Pityrogramma calomelanos: A potential phytoremediator of arsenic-contaminated soils |
title_sort |
arsenic species in an arsenic hyperaccumulating fern, pityrogramma calomelanos: a potential phytoremediator of arsenic-contaminated soils |
publishDate |
2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/20170 |
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1763495279724593152 |