Journal of the Brazilian Chemical Society | |
Evaluation of a PVC sensing phase for determination of chlorinated hydrocarbons in water by mid-infrared spectroscopy | |
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】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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