十溴联苯醚的热解及其影响因素研究.pdf

中国环境科学 2016,36(4) ：1099~1105 China Environmental Science 十溴联苯醚的热解及其影响因素研究 刘芃岩 1,2*,张雅婧 1,张彦娜 1,张瑞瑞 1,孙佳慧 1 (1.河北大学化学与环境科学学院,河北 保定 071002 ；2.河北 大学分析科学重点实验室,河北 保定 071002) 摘要：在 200~300℃的温度范围内研究了十溴联苯醚(BDE-209) 的热降解及其影响因素.结果表明,温度、时间以及硝酸铜、三氯化铁、氯 化铝和氯化锌等处理线路板过程中产生的金属盐对 BDE-209 热降解有不同的影响.升高温度或延长热解时间均能促进 BDE-209 的热解, 且温度对 BDE-209 降解的影响程度大于时间对其降解的影响;硝酸铜、三氯化铁和氯化铝对 BDE-209 的热解均起促进作用,促进作用的 顺序为:硝酸铜三氯化铁氯化铝;氯化锌对BDE-209 的热解有抑制作用;随着温度的升高,氯化铝和氯化锌对BDE-209 热降解的影响减弱. 该研究结果可为深入探究电子垃圾热处理过程中 BDE-209 的释放及降解提供科学依据. 关键词：十溴联苯醚(BDE-209) ；热解；影响因素；金属盐 中图分类号：X705 文献标识码：A 文章编号：1000-6923(2016)04-1099-07 1,2* 1 1 Pyrolysis and its influence factors of decabromodiphenyl ether. LIU Peng-yan , ZHANG Ya-jing , ZHANG Yan-na , 1 1 ZHANG Rui-rui , SUN Jia-hui (1.College of Chemical and Environmental Science, Hebei University, Baoding 071002, China；2.Key Laboratory of Analytical Science, Hebei University, Baoding 071002, China). China Environmental Science, 2016,36(4) ：1099~1105 Abstract ：This study investigates influence factors and thermal degradation of decabromodiphenyl ether (BDE-209) under the temperature range of 200~300 ℃. The results indicated that pyrolysis of BDE-209 was affected by temperature, time and common metal salts which were produced during the manufacturing and processing of printed circuit boards, such as copper nitrate, ferric chloride, aluminum chloride and zinc chloride. Pyrolysis of BDE-209 could be accelerated with the rise of temperature and extension of pyrolysis time. Results showed a greater impact of temperature on pyrolysis than that of time. A significant acceleration of pyrolysis was detected with copper nitrate, ferric chloride and aluminum chloride with degradation rates of BDE-209 in copper nitrate ferric chloride aluminum chloride. Pyr