Central Lab for Environmental Quality Monitoring (CLEQM), National Water Research Center (NWRC), Ministry of Water Resources and Irrigation (MWRI), City, Egypt.
Environ Monit Assess. 2012 Nov;184(11):6593-606. doi: 10.1007/s10661-011-2444-5. Epub 2011 Nov 15.
Phytoremediation is a well-known promising alternative to conventional approaches used for the remediation of diffused and moderated contaminated soils. The evaluation of the accumulation, availability, and interactions of heavy metals in soil is a priority objective for the possible use of phytoremediation techniques such as phytoextraction and phytostabilization. The soils used in this work were collected from a number of sites inside a protected area in the Apulia region (Southern Italy), which were contaminated by various heavy metals originated from the disposal of wastes of different sources of origin. Soils examined contained Cd, Cr, Cu, Ni, Pb, and Zn in amounts exceeding the critical limits imposed by EU and Italian laws. However, the alkaline conditions, high organic matter content, and silty to silty loamy texture of soils examined would suggest a reduced availability of heavy metals to plants. Due to the high total content but the low available fraction of heavy metals analyzed, especially Cr, phytoextraction appears not to be a promising remediation approach in the sites examined, whereas phytostabilization appears to be the best technique for metal decontamination in the studied areas.
植物修复是一种众所周知的有前途的替代方法，可用于修复扩散和缓和污染的土壤。评估重金属在土壤中的积累、有效性和相互作用是可能使用植物修复技术（如植物提取和植物稳定化）的优先目标。本工作中使用的土壤是从意大利南部普利亚地区一个保护区内的多个地点采集的，这些土壤受到了来自不同来源废物处置的各种重金属的污染。检查的土壤中含有 Cd、Cr、Cu、Ni、Pb 和 Zn，其含量超过了欧盟和意大利法律规定的临界限值。然而，土壤的碱性条件、高有机质含量以及粉砂质至粉砂壤土质地表明重金属对植物的有效性降低。由于分析的重金属总含量高但有效态分数低，尤其是 Cr，因此植物提取似乎不是检查点有前途的修复方法，而植物稳定化似乎是研究区域金属去污的最佳技术。
