碳纳米颗粒和胡敏酸改性碳纳米颗粒对有机污染物的吸附作用及定量研究

Sorption of persistent organic pollutants (POPs) on carbon nanoparticles (CNPs),a potential toxic pollutants, and humic acid modified CNPs is a key behavior that may potentially cause new combined pollution and sinificantly alter the geochimecal behaviors such as transport and fate and the health risks of both POPs and CNPs in the environment.This behavior should be investigated in detail for the environemntal security of the developing nanotechnology. However, current researches on this behavior have carried out mostly using qualitative methods.The applications of the results obtained in prediction and assessment of the combined pollution,the geochemical behaviors and the risks of both POPs and CNPs are consequently limited.Therefore,in addition to the quanlitive methods,we will examine the sorption behavior of organic compounds on CNPs and the influence of humic acid through a quantitative approach of sorption interactions by employing the Polanyi theory based models in this study.Sorption interactions and the strength will be identified by the sorption affinity parameters of Polanyi theory based model and related quantitatively with the sorption capacity parameters as well as the structure/property parameters of organic compounds, CNPs and humic acid modified CNPs,to establish a quantitative model for predicting the sorption behavior. The perspective resluts especially the quantitative model, that could be obtained in this study, will provided a possible way to predict and assess the geochemical bahaviors and the combined risks of both organic compounds and CNPs in the environment quantitatively.The results will also be helpful for the establishing of the national security system of nanotechnology and nanomaterials.

碳纳米颗粒和胡敏酸改性碳纳米颗粒对持久性有毒有机物的吸附对碳纳米颗粒和有机污染物在环境中的迁移转化、归趋等地球化学行为、复合效应和生物生态风险具有潜在的重大影响，是纳米技术持续发展需要研究解决的关键科学问题之一。现有的以定性描述为主的研究结果难以准确预测评价纳米颗粒和有机物的复合污染效应及潜在的环境地球化学行为和生物生态风险。因此，本项目拟在吸附作用力定性研究基础上，利用Polanyi吸附理论及其模型，定量研究碳纳米颗粒与有机污染物间的吸附作用力强弱及胡敏酸的影响，建立吸附作用力大小与吸附容量、有机物性质、碳纳米颗粒结构性质、胡敏酸改性碳纳米颗粒结构性质间的定量构效关系，并建立定量预测评价方法和模型，为准确预测评价纳米颗粒和有机污染物的复合效应、环境地球化学行为和生态环境风险提供理论依据和技术支撑，促进我国自主知识产权的纳米安全性预防体系建设。

碳纳米颗粒和胡敏酸改性碳纳米颗粒对持久性有毒有机物的吸附对碳纳米颗粒和有机污染物在环境中的迁移转化、归趋等地球化学行为、复合效应和生物生态风险具有潜在的重大影响，是纳米技术持续发展需要研究解决的关键科学问题之一。现有的以定性描述为主的研究结果难以准确预测评价纳米颗粒和有机物的复合污染效应及潜在的环境地球化学行为和生物生态风险。因此，本项目利用Polanyi吸附理论及其模型，定量研究碳纳米颗粒与有机污染物间的吸附作用力强弱及胡敏酸的影响，建立了吸附作用力大小与吸附容量、有机物性质、碳纳米颗粒结构性质、胡敏酸改性碳纳米颗粒结构性质间的定量构效关系，并建立了定量预测评价方法和模型，为准确预测评价纳米颗粒和有机污染物的复合效应、环境地球化学行为和生态环境风险提供理论依据和技术支撑。本项目研究已在Environ Sci Technol和 Water Res等国内外SCI期刊发表论文7篇，在美国化学学会会议等国内外会议上做学术报告9人次，培养毕业博士2人、硕士3人。