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

Autor(es)

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

Afiliação do(s) autor(es)

^[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD - England

^[2] UNESP Univ Estadual Paulista, Inst Chem, Araraquara, SP - Brazil

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

• Tipo de documento: Artigo Científico
• Fonte: Inorganic Chemistry Communications; v. 63, p. 93-95, JAN 2016.
• Citações Web of Science: 3

Resumo

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)

• Processo FAPESP: 13/22995-4 - Sensor luminescente para determinação in situ de compostos reduzidos de enxofre presentes em matrizes gasosas utilizando compostos de paládio
• Beneficiário: João Flávio da Silveira Petruci
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado