Determination of Chlorinated Hydrocarbons in Water Using Highly Sensitive Mid-Infrared Sensor Technology

• DOI: 10.1038/srep02525
• Publication Date: 2013-08-28T09:14:28Z
• Authors: Rui Lu; Boris Mizaikoff; Wen-Wei Li; Chen Qian; Abraham Katzir; Yosef Raichlin; Guo-Ping Sheng; Han-Qing Yu
• Keywords: Attenuated total reflection; Tetrachloroethylene

Chlorinated aliphatic hydrocarbons and chlorinated aromatic (CHCs) are toxic carcinogenic contaminants commonly found in environmental samples efficient online detection of these is still challenging at the present stage. Here, we report an advanced Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR) sensor for in-situ simultaneous multiple CHCs, including monochlorobenzene, 1,2-dichlorobenzene, 1,3-dichlorobenzene, trichloroethylene, perchloroethylene chloroform. The polycrystalline silver halide fiber had a unique integrated planar-cylindric geometry was coated with ethylene/propylene copolymer membrane to act as solid phase extractor, which greatly amplified analytical signal contributed higher sensitivity compared previously reported sensors. This system exhibited high towards CHCs mixture wide concentration range 5~700 ppb. FTIR-ATR described this study has potential be utilized trace-sensitive on-line device water contamination monitoring.