Evaluation of a PVC Sensing Phase for Determination of Chlorinated Hydrocarbons in Water by Mid-Infrared Spectroscopy

作者：Silva Andrea Monteiro S; Viana Eduardo de Araujo; Pimentel Maria Fernanda; Almeida Yeda M B; Raimundo Ivo M Jr^*

来源：Journal of the Brazilian Chemical Society, 2011, 22(8): 1470-1477.

DOI：10.1590/S0103-50532011000800010

• optical sensor
• chlorinated hydrocarbons
• PVC
• mid infrared

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.

• 出版日期2011