碳纳米颗粒的环境行为和效应研究

项目名称： 碳纳米颗粒的环境行为和效应研究

项目编号： No.41271461

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 王喜龙

作者单位： 北京大学

项目金额： 80万元

中文摘要： 碳纳米颗粒由于较大的表面积和较强的憎水性，对有机污染物具有很强的吸附性能，进而对其迁移、归趋和生物有效性等环境行为产生重要影响。由于各种碳纳米颗粒结构特性的差异性和有机污染物化学组成的多样性，二者的微界面相互作用机制以及碳纳米颗粒的引入对不同区域土壤中有机污染物生物有效性和生物富集性等影响的微观机理还并不清楚。本研究拟围绕碳纳米颗粒与有机污染物和不同地带性土壤来源的有机质的相互作用机制、不同区域来源的有机质与碳纳米颗粒的复合对有机污染物-碳纳米颗粒微界面作用行为的影响机制、碳纳米颗粒的排放对不同地带性土壤中有机污染物锁定和生物富集性等影响机制等开展一系列深入系统的研究。研究结果将为准确评价排放到不同土壤环境中的碳纳米颗粒对有机污染物环境行为和生态环境效应影响的评价提供科学依据。同时，也为环境规划与管理部门制定对碳纳米颗粒规范化管理相关政策的制定提供理论依据。

中文关键词： 纳米颗粒；相互作用；有机污染物；重金属；生物有效性

英文摘要： Due to relatively large surface area and high hydrophobicity of carbon-based nanoparticles, they have strong sorption affinity for organic contaminants, which in turn may greatly influence their transport, fate and bioavailability in the environment. To date, the exact interaction mechanisms between carbon-based nanoparticles and organic pollutants, and influence of carbon-based nanoparticles on bioavailability and bioaccumulation of organic contaminants along with associated mechanisms still remain largely unclear, mostly due to extremely complicated structure of carbon-based nanoparticles and chemical composition of organic chemicals. The interaction mechanisms between carbon-based nanoparticles with organic contaminant and soil organic matter from different zones, impact of the complexation of carbon-based nanoparticles with organic matter on their interactions with organic pollutants, as well as the mechanisms responsible for the influence of carbon-based nanoparticles on sequestration and bioaccumulation of organic contaminants in soils in distinct zones will thus be systematically examined in this work. Results of this study certainly will scientifically be valuable for evaluating the impact of carbon-based nanoparticles released into soils from different zones on environmental behaviors and ecological eff

英文关键词： nanoparticles；interaction；organic pollutants；heavy metals；bioavailability