Meggo Richard E, Schnoor Jerald L
Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA, ;
Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA.
Environ Sci (Ruse). 2013;1(1):33-52. doi: 10.12988/es.2013.13004.
A poplar planted system resulted in the complete removal of at least 19 of the 29 potential polychlorinated biphenyl (PCB) congeners detected in trace amounts (37.9 ng g in total) in a commercial garden soil, while the unplanted soil only had 2 congeners completely removed after 96 days. In addition, the most recalcitrant congener, PCB 52, only decreased by 0.1% in the unplanted reactors while declining by 22.3% in the planted system. There was also greater removal of a PCB 77 spike in the planted system when compared to the unplanted system, 17.2% in the planted system versus 2.8% in the unplanted system. The results suggest that phytoremediation may be an effective tool in cleaning commercially available garden soils that are lightly contaminated with PCBs.
一个杨树种植系统使得在商业花园土壤中检测出的29种潜在多氯联苯（PCB）同系物中的至少19种被完全去除，这些同系物含量微量（总量为37.9纳克/克），而未种植的土壤在96天后仅有2种同系物被完全去除。此外，最难降解的同系物PCB 52在未种植的反应器中仅减少了0.1%，而在种植系统中下降了22.3%。与未种植系统相比，种植系统对PCB 77尖峰的去除率也更高，种植系统中为17.2%，未种植系统中为2.8%。结果表明，植物修复可能是清洁轻度受多氯联苯污染的商业可用花园土壤的有效工具。
