Evaluation of a PVC sensing phase for determination of chlorinated hydrocarbons in water by mid-infrared spectroscopy

Autor(es)

Andréa Monteiro S. Silva ^[1] ; Eduardo de Araujo Viana ^[2] ; Maria Fernanda Pimentel ^[3] ; Yeda M. B. Almeida ^[4] ; Ivo M. Raimundo Jr ^[5]

Afiliação do(s) autor(es)

^[1] Universidade Federal de Pernambuco. Departamento de Química Fundamental - Brasil

^[2] Universidade Federal de Pernambuco. Departamento de Engenharia Química - Brasil

^[3] Universidade Federal de Pernambuco. Departamento de Engenharia Química - Brasil

^[4] Universidade Federal de Pernambuco. Departamento de Engenharia Química - Brasil

^[5] Universidade Estadual de Campinas. Instituto de Química - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 22, n. 8, p. 1470-1477, 2011-08-00.

Resumo

In this work, mid-infrared spectroscopy has been employed to investigate the effect of amount (25 or 40%) and type of plasticiser (di-2-ethylhexyl sebacate (DOS), di-2-ethylhexyl phthalate (DOP) and 2-nitrophenyl octyl ether (NPOE)) on the analytical response of a poly(vinylchloride) (PVC) sensing phase for the determination of the chlorinated hydrocarbons (chlorobenzene (ClB), trichloroethylene (TCE) and trichlorobenzene (TCB)) in water. It was observed that films with 40% of plasticiser provided higher sensitivity and lower limits of detection than those with 25%, although the later films are easier to handle. A similar behaviour was also observed for sensing phases prepared with the plasticisers NPOE and DOS. By employing a DOS-based PVC sensing phase and extraction time of 60 min, limits of detection of 0.3, 0.6, and 0.5 mg L-1 were obtained for chlorobenzene, trichloroethylene and trichlorobenzene, respectively. (AU)

• Processo FAPESP: 08/57808-1 - Instituto Nacional de Ciências e Tecnologias Analíticas Avançadas - INCTAA
• Beneficiário: Celio Pasquini
• Modalidade de apoio: Auxílio à Pesquisa - Temático