Chigbo Chibuike
School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK,
Bull Environ Contam Toxicol. 2015 Jun;94(6):777-82. doi: 10.1007/s00128-015-1550-4. Epub 2015 Apr 28.
This study compared the phytoremediation potential of Zea mays in soil either aged or freshly amended with chromium (Cr) and benzo[a]pyrene (B[a]P). Z. mays showed increased shoot biomass in aged soils than in freshly spiked soils. The shoot biomass in contaminated soils increased by over 50% in aged soil when compared to freshly amended soils, and over 29% more Cr was accumulated in the shoot of Z. mays in aged soil than in freshly amended soil. Planting Z. mays in aged soil helped in the dissipation of more than 31% B[a]P than in freshly spiked soil, but in the absence of plants, there seemed to be no difference between the dissipation rates of B[a]P in freshly and aged co-contaminated soil. Z. mays seemed to enhance the simultaneous removal of Cr and B[a]P in aged soil than in freshly spiked soil and hence can be a good plant choice for phytoremediation of co-contaminated soils.
本研究比较了玉米在铬（Cr）和苯并[a]芘（B[a]P）老化或新添加的土壤中的植物修复潜力。与新添加土壤相比，玉米在老化土壤中的地上部生物量增加。与新添加土壤相比，老化土壤中受污染土壤的地上部生物量增加了50%以上，且老化土壤中玉米地上部积累的Cr比新添加土壤中多29%以上。在老化土壤中种植玉米比在新添加土壤中有助于消散超过31%的B[a]P，但在没有植物的情况下，新添加和老化的共污染土壤中B[a]P的消散速率似乎没有差异。与新添加土壤相比，玉米似乎能增强老化土壤中Cr和B[a]P的同时去除，因此可作为共污染土壤植物修复的良好植物选择。
