期刊
IEEE SENSORS JOURNAL
卷 11, 期 12, 页码 3400-3405出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2011.2159970
关键词
Aromatic hydrocarbons; dispersive liquid-liquid microextraction (DLLME); dodecylsulfate-doped; gas sensor; nanoporous; polypyrrole; water samples
资金
- Tarbiat Modares University Research Council
- Iran National Science Foundation (INSF)
In this work, a dodecylsulfate-doped nano porous polypyrrole gas sensor (PPy-DS) has been prepared by vapor deposition polymerization of pyrrole on surfaces of commercial polymer fiber in the presence of dodecyl sulfate (DS) as an anion dopant. The sensing behavior of PPy-DS in the presence of several aromatic hydrocarbons: benzene (B), ethyl benzene (E), toluene (T), 1,3,5-trimethylbenzene (TMB), and some other volatile organic compounds were studied experimentally. The PPy-DS had demonstrated fast response time (<1s), sensitive for BTE and TMB with good reproducibility when reused. The sensitivity of the PPy-DS for various organic hydrocarbons was in the following order: BTE, TMB >> alcohol, acetone, acetonitrile, chloroform, and carbon disulfide. The PPy-DS coupled to a gas chromatograph and used for speciation determination of BTE and TMB in water samples by using a dispersive liquid-liquid microextraction (DLLME) method.
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