A new luminescent silver-based probe for on/off sulfide determination

Author(s)

Segura, Daniel Fonseca ^{[1, 2]} ; da Silveira Petruci, Joao Flavio ^{[1, 3]} ; Cardoso, Arnaldo Alves ^[1] ; Galvao Frem, Regina Celia ^[1] ; de Godoy Netto, Adelino Vieirade ^[1] ; Champness, Neil R. ^[2]

Affiliation

^[1] UNESP Univ Estadual Paulista, Inst Chem, Araraquara, SP - Brazil

^[2] Univ Nottingham, Sch Chem, Nottingham NG7 2RD - England

^[3] Univ Estadual Paulista, Inst Quim, Dept Quim Analit, Rua Francisco Degni 55, BR-14801970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Inorganic Chemistry Communications; v. 63, p. 93-95, JAN 2016.
• Web of Science Citations: 3

Abstract

The sulfide anion is a corrosive, toxic and harmful compound found in a wide range of anoxic environments. Metal-based complexes have been used as luminescent probes for sulfide determination. However, their synthesis usually involves laborious procedures and the use of toxic reagents. In this paper, we describe the synthesis, characterization and application of a new, sensitive and selective silver complex probe for sulfide detection. The process of sulfide determination is based on rapid reaction in aqueous/methanolic media between the silver (I) complex and sulfide leading to an increase in fluorescence intensity. Analytical performance has been studied in the concentration range of 190 to 950 nmol L-1 of sulfide with suitable linearity, and the limit of detection was calculated to be (3 sigma/S) to 20 nmol L-1. The probe's selectivity to S2- was evaluated over other competing anions showing excellent results and its reversibility was demonstrated upon addition of AgCF3SO3. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 13/22995-4 - Luminescent sensor for in situ determination of reduced sulfur compounds in gaseous matrices using palladium compounds
• Grantee: João Flávio da Silveira Petruci
• Support type: Scholarships in Brazil - Post-Doctorate