Bio-inspired colorimetric detection of Hg2+ and Pb2+ heavy metal ions using Au nanoparticles

Marc Knecht, Manish Sethi

Research output: Contribution to journalArticle

145 Citations (Scopus)

Abstract

Heavy metal ions are highly toxic species which can cause long-term damage to biological systems. These species are known to disrupt biological events at the cellular level, cause significant oxidative damage, and are carcinogens. The production of simple, in-field detection methods that are highly sensitive for these cations is highly desirable in response to global pollution. In that regard, bio-inspired colorimetric sensing systems have been developed to detect Hg2+ and Pb2+, and other cations, down to nmol L -1 concentrations. The benefits of these systems, which are reviewed herein, include cost-effective production, facile usage, and a visual color change for the detection method. Such advantages are significant positive steps for heavy metal ion detection, especially in regions where sophisticated laboratory studies are prohibited.

Original languageEnglish
Pages (from-to)33-46
Number of pages14
JournalAnalytical and Bioanalytical Chemistry
Volume394
Issue number1
DOIs
StatePublished - May 1 2009
Externally publishedYes

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Heavy Ions
Heavy Metals
Heavy ions
Nanoparticles
Metal ions
Cations
Poisons
Biological systems
Carcinogens
Pollution
Color
Costs and Cost Analysis
Costs
Haemophilus influenzae type b-polysaccharide vaccine-diphtheria toxoid conjugate

Keywords

  • Au nanoparticles
  • Bio-inspired nanotechnology
  • Colorimetric detection
  • Heavy metal detection
  • Oligonucleotides
  • Peptides

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry

Cite this

Bio-inspired colorimetric detection of Hg2+ and Pb2+ heavy metal ions using Au nanoparticles. / Knecht, Marc; Sethi, Manish.

In: Analytical and Bioanalytical Chemistry, Vol. 394, No. 1, 01.05.2009, p. 33-46.

Research output: Contribution to journalArticle

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