Monomethy larsonic acid

Arnold, L.L., Eldan, M., Van Gemert, M. et al. (2003) Chronic studies evaluating the carcinogenicity of monomethy-larsonic acid in rats and mice. Toxicology, 190(3), 197-219. 

Two oxidation states of arsenic, As(V) and As(III), predominate in surface and near-surface environments. In solution, arsenic exists primarily as oxyanions arsenate [As(V) as H3ASO4] has pKa values of 2.2, 6.9, and 11.5, while arsenite [As(ni) as H3ASO3] has values of 9.2, 12.1, and 13.4 (Smith et al., 1998 Goldberg and Johnston, 2001). Thus, at circumneutral pH, H2ASO4, HAsOa , and H3ASO3 species dominate. Plant and microbial activity may methylate As(V) or As(III), forming, for example, dimethylarsenic acid (DMAA) and monomethy-larsonous acid (MMAA) (Cullen and Reimer, 1989). However, methylated species... 

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See also in sourсe #XX -- [ ]

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