Papers by Keyword: Laser Flash Photolysis

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Authors: Wen Yan Shi, Jian Zhong Gu, Zheng Jiao, Wen Jing Wu, Gang Xu, Ming Hong Wu, Jian Qiu Lei, Gu Yu Hu
Abstract: (+)-alpha-phenylglycine are significant contaminants at pharmaceutical intermediates production. To study processes for the destruction of contaminant L(+)-alpha-phenylglycine in acid aqueous solution we have investigated the transient species using both laser flash photolysis. The OH· reaction with L(+)-alpha-phenylglycine process was investigated and formed polymer. Furthermore, the results of steady-state analysis suggested that L(+)-alpha-phenylglycine removal was found to be more efficient with increasing applied dose. L(+)-alpha-phenylglycine, decreased by 44.50%, using a dose of 14kGy.
469
Authors: M. Kusaba, Yoshihiko Tsunawaki, N. Nakashima
211
Authors: Wen Yan Shi, Jian Zhong Gu, Wen Jing Wu, Yan Feng Sun, Rui Yun Guo, Gang Xu, Gu Yu Hu, Jian Qiu Lei, Ming Hong Wu
Abstract: 2,2',3,3',4,4',5,5',6,6'-bromdiphenyl ether (BDE-209) solutions were irradiated with ultraviolet (UV) and electron beams. Organic compounds were fully removed by each type of radiation. The absorbed energy of the ionizing radiation (electron beams) needed for removal was much lower than that of UV photocatalysis. BDE-209 removal using the ionizing radiation was accelerated drastically by dosage. It is suggested that pH value of solution affect the decomposition rates. Radiolysis with the high pH value showed consistently high rate and high efficiency of BDE-209 removal.
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