Methanogenic inhibition by arsenic compounds

Maria Reye Sierra Alvarez, Irail Cortinas, Umur Yenal, James A Field

Research output: Contribution to journalArticle

38 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
Publication statusPublished - Sep 2004


ASJC Scopus subject areas

  • Environmental Science(all)
  • Biotechnology
  • Microbiology

Cite this