Issues underlying use of biosensors to measure metal bioavailability

Christopher Rensing, Raina M. Maier

Research output: Contribution to journalArticlepeer-review

80 Scopus citations


Heavy metal-mediated toxicity in the environment is dependent on bioavailable metal concentrations both internal and external to microbial cells. Both internal and external metal bioavailability are influenced by multiple factors in the soil environment. External factors include pH, redox potential, ionic strength, organic matter and clay content. The internal bioavailable metal concentration is dependent on both the aforementioned external factors, as well as metal uptake and efflux activities that are specific for each microorganism. The metal-specific biosensors discussed in this article can be used to measure internal metal bioavailability.

Original languageEnglish (US)
Pages (from-to)140-147
Number of pages8
JournalEcotoxicology and Environmental Safety
Issue number1
StatePublished - Sep 2003


  • Bioavailability
  • Biosensor
  • Efflux
  • Heavy metals
  • Transition metals
  • Uptake

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


Dive into the research topics of 'Issues underlying use of biosensors to measure metal bioavailability'. Together they form a unique fingerprint.

Cite this