| 二噁类的紫外光降解——八氯代二苯并二噁和八氯代二苯并呋喃 |
| |
| 作者单位： | 浙江大学热能工程研究所，能源洁净利用国家重点实验室，浙江大学热能工程研究所，能源洁净利用国家重点实验室，浙江大学热能工程研究所，能源洁净利用国家重点实验室，浙江大学热能工程研究所，能源洁净利用国家重点实验室，浙江大学热能工程研究所，能源洁净利用国家重点实验室，浙江大学热能工程研究所，能源洁净利用国家重点实验室 浙江杭州310027，浙江杭州310027，浙江杭州310027，浙江杭州310027，浙江杭州310027，浙江杭州310027 |
| |
| 摘 要： | 运用多功能光化学反应仪,对八氯代二苯并二和呋喃(OCDD和OCDF)在正己烷中的紫外光解特性进行了研究.结果表明,OCDD及OCDF的降解主要是通过脱氯反应,OCDD在正己烷溶液中脱氯反应优先发生在侧位(2-,3-,7-,8-)上,而OCDF的光解脱氯反应优先发生在邻位(1-,4-,6-,9-)上.同时OCDD和OCDF在正己烷中的光解反应符合一级反应动力学.增加汞灯功率,可加快OCDF在正己烷溶液中的光解速度.
|
| 关 键 词： | 八氯代二苯并二噁(OCDD) 八氯代二苯并呋喃(OCDF) 紫外光解 正己烷 |
Ultraviolet photolysis of dioxins: Octachlorinated dibenzo-p-dioxin and Octachlorodibenzofuran |
| |
| YAN Jian-hua,CHEN Tong,LI Xiao-dong,LU Sheng-yong,GU Yue-ling,CEN Ke-fa. Ultraviolet photolysis of dioxins: Octachlorinated dibenzo-p-dioxin and Octachlorodibenzofuran[J]. Journal of Zhejiang University(Engineering Science), 2005, 0(7) |
| |
| Authors: | YAN Jian-hua CHEN Tong LI Xiao-dong LU Sheng-yong GU Yue-ling CEN Ke-fa |
| |
| Abstract: | Ultraviolet photolysis of octachlorianted dibenzo-p-dioxin(OCDD) and octachlorodibenzofuran(OCDF) were carried out in n-hexane solvent by using multi-functional photochemical reactor.The experimental results show that the major photolysis pathways of OCDD and OCDF were dechlorination, and the preferential losses of the chlorine atoms on the OCDD were in lateral(2,3,7,and 8) positions.However,the preferential loss of the chlorine atoms on the OCDF were in peri(1,4,6,and 9) positions.Photolysis rate of OCDD and OCDF in n-hexane solvent fit a first-order reaction. The enhancing power of mercury lamp can increase the photolytic rate of OCDF in n-hexane solvent. |
| |
| Keywords: | octachlorianted debenzo-p-dioxin(OCDD) octachlorodibenzofuran(OCDF) ultraviolet photolysis n-hexane |
| 本文献已被 CNKI 等数据库收录！ |
|
