Methanogenic inhibition by arsenic compounds

Reyes Sierra-Alvarez, Irail Cortinas, Umur Yenal, Jim A. Field

Research output: Contribution to journalArticle

41 Scopus citations


The acute acetoclastic methanogenic inhibition of several inorganic and organic arsenicals was assayed. Trivalent species, i.e., methylarsonous acid and arsenite, were highly inhibitory, with 50% inhibitory concentrations of 9.1 and 15.0 μM, respectively, whereas pentavalent species were generally nontoxic. The nitrophenylarsonate derivate, roxarsone, displayed moderate toxicity.

Original languageEnglish (US)
Pages (from-to)5688-5691
Number of pages4
JournalApplied and environmental microbiology
Issue number9
StatePublished - Sep 2004

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

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