植物修复多氯联苯污染土壤的效果

Effect on Phytoremediation of PCBs Contaminated Soil

多氯联苯(Polychlorinated biphenyls,PCBs)是一类持久性有机污染物(POPs)。描述了利用植物刺槐(Robinia pseudoacacia)和西葫芦(Cucurbita pepo ssp.pepo)修复受多氯联苯Aroclor 1248污染的土壤,并用GC/MS测定修复效果。结果表明,植物种植18 d后,刺槐根际对多氯联苯的总降解率为39.7%,西葫芦根际对多氯联苯的总吸收率为33.6%;植物种植35 d后刺槐根际对多氯联苯的总降解率为58.1%,西葫芦根际对多氯联苯的总吸收率为40.9%。在利用植物修复土壤污染方面,刺槐的效果更好。

PCBs is a kind of persistent organic pollutants.The artificial Aroclor 1248 contaminated soil was remediated by using plants（Robinia pseudoacacia and Cucurbita pepo ssp.pepo）;and the remediation effects were determined with GC / MS.The results were as follows,On the 18th day after planting,the total degradation rate of PCBs by the rhizosphere of black locust was 39.7%,and the total absorption rate of PCBs by the rhizosphere of zucchini was 33.6%.On the 35th day after planting,the total degradation rate of PCBs by the rhizosphere of black locust was 58.1%,and the total absorption rate of PCBs by the rhizosphere of zucchini was 40.9%.For phytoremediation of soil pollution,it was thought that planting black locust was better.