Fluorescence-based sensor for Pb(II) using tetra-(3-bromo-4-hydroxyphenyl)porphyrin in liquid and immobilized medium


SEYHAN BOZKURT S., Ayata S., Kaynak I.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.72, no.4, pp.880-883, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.1016/j.saa.2008.12.012
  • Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.880-883
  • Keywords: Fluorescence-based sensor, Lead(II), Tetra-(3-bromo-4-hydroxyphenyl)porphyrin, ATOMIC-ABSORPTION-SPECTROMETRY, SPECTROPHOTOMETRIC DETERMINATION, CHEMICAL SENSOR, LEAD, CADMIUM, MERCURY, MEMBRANE, POLYMER, COMPLEX, BLOOD
  • Dokuz Eylül University Affiliated: Yes

Abstract

A new optical sensor for sensing of Pb2+ in immobilized medium (PVC film) and ethanol medium was developed by using 5,10,15,20-tetra-(3-bromo-4-hydroxyphenyl)porphyrin (TBHPP) synthesized. The sensor-based TBHPP showed a linear response towards Pb2+ in concentration range from 5 x 10(-6) to 4 x 10(-4) mol L-1 in PVC film and 5 x 10(-6) to 3 x 10(-4) mol L-1 in ethanol medium, with a working pH 7. The detection limit was 2 x 10(-8) and 4 x 10(-8) mol L-1 for Pb2+ in PVC film and ethanol medium respectively. The response time of Pb2+ was found as 4 min for PVC film and 2 min for ethanol medium. The sensor developed in two different mediums was used for lead determination in standard soil sample with satisfactory results. (C) 2008 Elsevier B.V. All rights reserved.