Publication: Potential of the hybrid marigolds for arsenic phytoremediation and income generation of remediators in Ron Phibun District, Thailand
Issued Date
2008-02-01
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ISSN
00456535
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2-s2.0-38049134754
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Mahidol University
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SCOPUS
Bibliographic Citation
Chemosphere. Vol.70, No.8 (2008), 1532-1537
Suggested Citation
Watchara Chintakovid, Pornsawan Visoottiviseth, Somkiat Khokiattiwong, Siriporn Lauengsuchonkul Potential of the hybrid marigolds for arsenic phytoremediation and income generation of remediators in Ron Phibun District, Thailand. Chemosphere. Vol.70, No.8 (2008), 1532-1537. doi:10.1016/j.chemosphere.2007.08.031 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/19094
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Title
Potential of the hybrid marigolds for arsenic phytoremediation and income generation of remediators in Ron Phibun District, Thailand
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Abstract
Nugget marigold, a triploid hybrid between American (Tagetes erecta L.) and French (Tagetes patula) marigolds, is a marketed flowering plant with a good ability in arsenic phytoremediation. During field trial in an arsenic-polluted area in Thailand, arsenic was found mostly in leaves (46.2%) while flowers contained the lowest arsenic content (5.8%). Arsenic species in aqueous extracts of nugget marigolds were determined by HPLC-UV-HG-QF-AAS. Inorganic arsenics, arsenite and arsenate, were the main arsenic chemical species found in roots, stems, and leaves of marigolds with accumulated arsenic. Nugget marigolds from experimental plots not only accumulated high levels of arsenic but also grew well in arsenic-contaminated areas. Phosphate fertilizer enhanced arsenic uptake when the plants were in the flowering stage. Arsenic remediation using nugget marigolds could also provide economic benefits to the remediators through marketing flowers. Therefore, marigolds should be considered as a potential economic crop for phytoremediation. © 2007 Elsevier Ltd. All rights reserved.