Radiolytic decomposition of 4-bromodiphenyl ether

Radiolytic decomposition of 4-bromodiphenyl ether 1 first-author 1 1 1 1 1 1 corresp Corresponding author. E-mail address: mhwu@staff.shu.edu.cn Corresponding author. E-mail address: mhwu@staff.shu.edu.cn mhwu@staff.shu.edu.cn Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China Polybrominated diphenyl ethers (PBDEs) spread widely in the environment are mainly removed by photochemical and anaerobic microbial degradation. In this paper, the decomposition of 4-bromodiphenyl ether (BDE -3), the PBDEs homologues, is investigated by electron beam irradiation of its ethanol/water solution (reduction system) and acetonitrile/water solution (oxidation system). The radiolytic products were determined by GC coupled with electron capture detector, and the reaction rate constant of e sol – in the reduction system was measured at 2.7×10 10 L·mol –1 ·s –1 by pulsed radiolysis. The results show that the BDE-3 concentration affects strongly the decomposition ratio in the alkali solution, and the reduction system has a higher BDE-3 decomposition rate than the oxidation system. This indicates that the BDE-3 was reduced by effectively capturing e sol – in radiolytic process. 4-Bromodiphenyl ether E-beam irradiation decomposition Pulsed radiolysis Reaction rate constant References Watanabe I , Tatsukawa R . Bull Environ Contam Toxicol , 1987 , 39 : 953 - 959 . Bull Environ Contam Toxicol Söderström G , Sellström U , de Wit C A , et al . Environ Sci Technol , 2004 , 38 : 127 - 132 . Environ Sci Technol Eriksson J , Green N , Marsh G , et al . Environ Sci Technol , 2004 , 38 : 3119 - 3125 . Environ Sci Technol Fang L , Huang J , Yu G , et al . Chemosphere , 2008 , 71 : 258 - 267 . Chemosphere Gerecke A C , Hartmann P C , Heeb N V , et al . Environ Sci Technol , 2005 , 39 : 1078 - 1083 . Environ Sci Technol Robrock K R , Korytar P , Alvarez-Cohen L . Environ Sci Technol , 2008 , 42 : 2845 - 2852 . Environ Sci Technol Al-sheikhly M , Silverman J . Environ Sci Technol , 1997 , 31 : 2473 - 2477 . Environ Sci Technol Zhang S J , Jiang H , Li M J , et al . Environ Sci Technol , 2007 , 41 : 1977 - 1982 . Environ Sci Technol Wang Y L , Bao B R , Wu M H , et al . Nucl Sci Tech , 2006 , 29 , 1 : 51 - 54 . (in Chinese) Nucl Sci Tech Liu N , Xu G , Wu M H , et al . Nucl Sci Tech , 2008 , 31 , 3 : 209 - 213 . (in Chinese) Nucl Sci Tech Wu J L , Qi S C . Radiation Chemistry . Beijing : Atomic Energy Press , 1993 . (in Chinese) Radiation Chemistry Liu S H . Mechanism studies on radio-degradation of toxic persistent organic pollutants-degradation mechanisms of chlorophenols and azo-dyes, PhD Thesis . Tongji University , 2004 , 59 - 61 . (in Chinese) Mechanism studies on radio-degradation of toxic persistent organic pollutants-degradation mechanisms of chlorophenols and azo-dyes, PhD Thesis Wu M H , Bao B R . Application of radiation technology in environmental protection . Beijing : Chemical Industry Press , 2002 , 16 . (in Chinese) Application of radiation technology in environmental protection 10.13538/j.1001-8042/nst.21.72-75 Supported by National Natural Science Foundation of China (No. 40830744 and 40973073) , National Key Technology R&D Program in the 11th Five-year Plan of China (No. 2008BAC32B03) , Shanghai Leading Academic Discipline Project (No. S30109) and Science and Technology Commission of Shanghai Municipality (No. 09ZR1411300; A.10-0111-07-003) 2009-07-03 2010-04-20 2021-01-19 2010 Nuclear Science and Techniques 02 21