Institute of Soil Science and Environmental Management, University of Life Sciences in Lublin, Lublin, Poland.
J Hazard Mater. 2011 Feb 15;186(1):436-42. doi: 10.1016/j.jhazmat.2010.11.028. Epub 2010 Nov 12.
The aim of this study was to evaluate the toxicity of sewage sludges containing multiwalled carbon nanotubes (CNTs) with an outer diameter <10 nm (CNT10) or 40-60 nm (CNT60) to Lepidium sativum (cress), Sorghum saccharatum (sorgo), Solanum lycopersicon (tomato), Raphanus sativus (radish) and Cucumis sativus (cucumber). CNTs were also incubated in sewage sludge for 7 or 31 days to determine the effect of CNT aging on sewage sludge phytotoxicity. The influence of CNTs on 4 different sewage sludges was tested. The CNTs' influence on sludge toxicity varied with respect to the CNTs' outer diameter, type of sewage sludges and the plants tested. No significant influence of CNT concentration on phytotoxicity was noted. In the case of two sludges, a positive influence of CNTs on seed germination and root growth was observed. Depending on the CNTs' outer diameter, CNT aging decreased (CNT10) or increased (CNT60) sewage sludge phytotoxicity.
本研究旨在评估含有外直径 <10nm（CNT10）或 40-60nm（CNT60）的多壁碳纳米管（CNT）的污水污泥的毒性，以研究其对蕹菜、高粱、番茄、萝卜和黄瓜的影响。将 CNT 也在污水污泥中孵育 7 或 31 天，以确定 CNT 老化对污水污泥植物毒性的影响。测试了 CNT 对 4 种不同污水污泥的影响。CNTs 对污泥毒性的影响因 CNT 的外直径、污水污泥的类型和测试的植物而有所不同。CNTs 浓度对植物毒性没有显著影响。在两种污泥中，观察到 CNTs 对种子发芽和根生长有积极影响。根据 CNT 的外直径，CNT 老化会降低（CNT10）或增加（CNT60）污水污泥的植物毒性。
