Iridium oxide nanoparticle induced dual catalytic/inhibition based detection of phenol and pesticide compounds

Mayorga-Martinez C. C., Pino F., KURBANOĞLU S., Rivas L., ÖZKAN S. A., Merkoci A.

JOURNAL OF MATERIALS CHEMISTRY B, vol.2, no.16, pp.2233-2239, 2014 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 2 Issue: 16
  • Publication Date: 2014
  • Doi Number: 10.1039/c3tb21765e
  • Journal Name: JOURNAL OF MATERIALS CHEMISTRY B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2233-2239
  • Ankara University Affiliated: Yes

Abstract

Environmental pollution control technology has a great demand for detection systems, particularly for pesticides and phenolic compounds. Moreover, analytical systems are highly required for the dual detection of different pollutants using the same platform. In that direction, a new, reliable, easy to use and disposable biosensor for the detection of catechol and chlorpyrifos is proposed. The designed biosensor with synergic properties between the high conductivity of iridium oxide nanoparticles, lowcost screen printed electrodes and the efficiency of tyrosinase shows broad linearity ranges for catechol and chlorpyrifos detection. Using this biosensor, very low limits of detection for catechol (0.08 mu M) and chlorpyrifos (0.003 mu M) are observed and recoveries of spiked tap and river water samples have also been studied showing very good recoveries.