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

Journal of the Brazilian Chemical Society

Andréa Monteiro S. Silva²  Eduardo De Araujo Viana¹  Maria Fernanda Pimentel¹  Yeda M. B. Almeida¹  Ivo M. Raimundo Jr¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Química Fundamental Recife PE ,Brazil

关键词: optical sensor;    chlorinated hydrocarbons;    PVC;    mid infrared;   

DOI  :  10.1590/S0103-50532011000800010

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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