微波降解水相中的多氯联苯

Degradation of polychlorinated biphenyls in water by microwave irradiation

采用微波辐射技术降解水中的多氯联苯,研究了微波技术降解水相中多氯联苯的影响因素,并探索了多氯联苯在微波辐射下的降解规律。采用紫外分光光度仪和红外吸收光谱法以及高效液相色谱法定量和定性分析微波降解后多氯联苯的浓度及降解产物。发现该技术在微波功率为480 W、辐射时间3 min、水样为弱酸性时可以有效降解多氯联苯,降解率为70%,产物为联苯。

The use of microwave irradiation to degrade PCBs in water has received more and more attention.It is important to study the influence factors of PCBs’ degradation and to explore the regularity of PCBs’ degradation by microwave irradiation.The concentration of PCBs and degradation products were analysed with UV、IR and HPLC spectrometry.When microwave power was 480W,time of microwave irradiation was 3 minutes and pH of water sample was in a weakly acidic,PCBs could be effectively degraded into biphenyl and the degeneration rate was 70%.