Pulse amperometric detection of salt concentrations by flow injection analysis using ionodes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

Lee, HJ (Autor) Outra; Pereira, CM (Autor) FCUP; Silva, AF (Autor) FCUP; Girault, HH (Autor) Outra

Revista

Título: Analytical Chemistry

Vol. 72

Páginas: 5562-5566

ISSN: 0003-2700

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 41 Citações

Scopus - 40 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-000-YG4

DOI: 10.1021/ac0006831

Abstract (EN): A sensitive novel approach of using an amperometric ion detector for the now injection analysis of salts has been developed. The detection methodology is based on measuring the-current associated with the transfer of ions across polarized microinterfaces between the aqueous sample solution and a 2-nitrophenyloctyl ether-poly(vinyl chloride) gel phase, referred to as ionodes, Different sodium salts of fluoride, chloride, bromide, nitrate, and sulfate were investigated. It was found that by employing an amperometric pulse detection mode and pure water as eluent; the detection limit of the ionode detector could be lowered to ppt level of salt concentrations under flowing conditions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5