Journal of Food, Agriculture and Environment




Characterization of arsenic speciation using XANES spectroscopy in Comamonas terrae, an arsenite-oxidizing bacterium isolated from agricultural soil in Thailand


Author(s):

Kitja Chitpirom 1, Ancharida Akaracharanya 2, Somboon Tanawupawat 3, Natchanun Leeptpatpiboon 4, Kyoung-Woong Kim 5, Josef Hormes 6, Alexander Prange 6, 7, 8*

Recieved Date: 2016-09-09, Accepted Date: 2016-12-28

Abstract:

Comamonas terrae, a Gram-negative, rod-shaped bacterium isolated from agricultural soil in Thailand, is able to oxidize arsenite to arsenate in soil and water systems. X-ray absorption near-edge structure (XANES) spectroscopy was used to analyze arsenic speciation in culture supernatants from Comamonas terrae grown in arsenite-containing media to demonstrate its arsenite oxidation capability. This strain offers new opportunities in soil bioremediation processes based on its capability to transform As(III) into the less-toxic As(V).

Keywords:

Arsenite oxidation, XANES spectroscopy, Comamonas, bioremediation, soil


Journal: Journal of Food, Agriculture and Environment
Year: 2017
Volume: 15
Issue: 1
Category: Environment
Pages: 44-47


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