School of Life Science, Nanjing University, Nanjing, PR China.
Nanjing University Ecological Research Institute of Changshu, Changshu, PR China.
Int J Phytoremediation. 2020;22(13):1385-1395. doi: 10.1080/15226514.2020.1780411. Epub 2020 Jul 16.
Soil contamination is currently the most severe problem as it poses a toxicological impact on human health and ecosystems. A greenhouse experiment was carried out to investigate the effect of 20 and 40 mg kg of cadmium (Cd) or 50 and 100 mg kg of pyrene (PYR) and the combined effect of Cd-PYR on the growth of together with the uptake and accumulation of Cd as well as removal of PYR. Results demonstrated that the single or co- contaminants of Cd and PYR did not affect plant growth relative to control treatments, except low Cd and high PYR treatment, which showed a significant increase in 91% biomass compared to the control. However, under the joint effect of Cd-PYR, was unwilling to uptake and translocate Cd, and bioconcentration factor (BCF) and translocation factor (TrF) values were less than one. The removal rate of PYR in the soils and soil enzymes was negatively impacted at the elevated Cd level in the soil. Our study shows that may have the potential for phytostabilization but cannot be useful for phytoextraction.
土壤污染目前是最严重的问题，因为它对人类健康和生态系统具有毒理学影响。进行了一项温室实验，以研究 20 和 40mgkg 的镉 (Cd) 或 50 和 100mgkg 的芘 (PYR) 以及 Cd-PYR 的联合效应对 的生长、Cd 的吸收和积累以及 PYR 的去除的影响。结果表明，与对照处理相比，单一或复合污染物 Cd 和 PYR 对植物生长没有影响，除了低 Cd 和高 PYR 处理外，与对照相比，生物量显著增加了 91%。然而，在 Cd-PYR 的共同作用下， 不愿意吸收和转运 Cd，生物浓缩因子 (BCF) 和转运因子 (TrF) 值均小于 1。土壤中 Cd 水平升高会对土壤中 PYR 的去除率和土壤酶产生负面影响。我们的研究表明， 可能具有植物稳定化的潜力，但不能用于植物提取。
