Methanogenic inhibition by arsenic compounds

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

Research output: Contribution to journalArticlepeer-review

50 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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