Chen Su, Sun Lina, Chao Lei, Zhou Qixing, Sun Tieheng
Key Laboratory of Eco-remediation of Contaminated Environment and Resources Reuse, Shenyang University, Ministry of Education, Shenyang 110044, China.
Bull Environ Contam Toxicol. 2009 Jan;82(1):43-7. doi: 10.1007/s00128-008-9566-7. Epub 2008 Oct 15.
In this study, the single extraction and sequential extraction procedure were used to separate Pb from an old smelter soil in Liaoning Province, China. At the same time, the root and the overground parts of six species plants in the smelter were harvested for analysis. The concentrations of Pb in the roots and the overground parts of the plants were then compared with the amounts of Pb extracted from the rhizosphere soil by range of conventional extractants. The speciation distribution of Pb was RES > OX > OM > WSA > SE. Assuming that metal mobility and bioavailability are related to their solubility and the contents in typical plants in the contaminated soil, Pb would be the potential risk to environment safety in the area.
在本研究中，采用单次提取和连续提取程序从中国辽宁省某旧冶炼厂土壤中分离铅。同时，采集了冶炼厂内六种植物的根部和地上部分进行分析。然后将植物根部和地上部分的铅浓度与常规提取剂从根际土壤中提取的铅量进行比较。铅的形态分布为残渣态>氧化态>有机结合态>弱有机酸盐态>可交换态。假设金属的迁移性和生物有效性与其在污染土壤中的溶解度及典型植物中的含量有关，铅可能对该地区的环境安全构成潜在风险。
