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

Journal of the Brazilian Chemical Society

Almeida, Yeda M. B.¹  Raimundo Jr, Ivo M.¹  Silva, Andréa Monteiro S.¹  Universidade Estadual de Campinas, Campinas, Brazil¹  Pimentel, Maria Fernanda¹  Universidade Federal de Pernambuco, Recife, Brazil¹  Viana, Eduardo de Araujo¹ 

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

DOI  :  10.1590/S0103-50532011000800010

学科分类：化学（综合）

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】

Unknown