Optical thin film sensors have been developed to detect chloroform in aqueous and nonaqueous solutions. These sensors utilize a modified Fujiwara reaction, one of the only known methods for detecting halogenated hydrocarbons in the visible spectrum. The modified Fujiwara reagents, 2,2'-dipyridyl and tetra-n-butyl ammonium hydroxide (n-Bu4NOH or TBAH), are encapsulated in an ethyl cellulose (EC) or sol-gel film.
View Article and Find Full Text PDFChem Commun (Camb)
October 2013
The ability to detect biodiesel at various concentrations in diesel is an important goal in several industries. A simple, solvatochromic dye-doped optical sensor is presented for quick and direct detection of 0.5 ppm-20% v/v FAME/biodiesel in diesel.
View Article and Find Full Text PDF