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- W2387434452 abstract "A novel method for the determination of fluorine contents in liquid crystal materials by titanium dioxide( TiO2) photocatalytic oxidation-ion chromatography had been developed. The TiO2 photocatalytic oxidation had been used as an organdestroied pretreatment process to degrade fluoride liquid crystal materials, which caused the rupture of chemical bond between the carbon and the fluorine,and the concentrations of inorganic fluorine ion formed from photo-degradation were determined by ion chromatography. The results showed that the optimum efficiency of TiO2 photocatalytic oxidation was obtained with the amounts of TiO2 of 0. 1 g/L and degradation time of 50 min. A linear dependence of peak area on F concentration allowed quantification of F -1 over the range of 0. 005 1 mg/g,and the detection limit was 2. 1 μg/g. The fluorine contents of three liquid crystal samples were determined with the results of 7. 6 mg/g,18. 1 mg/g and 28. 4 mg/g,respectively. The recoveries obtained were among 86% 118% ,and the relative standard deviations( RSD,n = 5) were found to be 3. 2% 5. 7% . It not only applies to the determination of fluorine contents in other organic-fluorine systems,but also provides a new approach for other organic compounds systems containing organdestroied pre-treatment process." @default.
- W2387434452 created "2016-06-24" @default.
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- W2387434452 date "2010-01-01" @default.
- W2387434452 modified "2023-09-28" @default.
- W2387434452 title "Determination of Fluoride Contents in Liquid Crystal Materials by TiO_2 Photocatalytic Oxidation-Ion Chromatography" @default.
- W2387434452 hasPublicationYear "2010" @default.
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