Collaborative Research: Gaining a molecular level understanding of the sorption of model organic molecules to engineered soil surrogates

合作研究：在分子水平上了解模型有机分子对工程土壤替代物的吸附

• 批准号: 1411687
• 负责人: Benjamin Lear
• 金额: $ 25万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-11-15 至 2018-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1411687&HistoricalAwards=false
• 关键词: Collaborative; Research; Gaining; molecular; level

The funding of this project by the Environmental Chemical Sciences program in the Division of Chemistry will enable Professors Robert Cook and David Spivak of Louisiana State University (LSU) and Karl Mueller of Pennsylvania State University (PSU) to introduce a postdoctoral fellow, graduate students, and undergraduate students to interdisciplinary research involving organic, analytical, and environmental chemistry. Recruitment will focus on students from underrepresented groups who will be introduced to the complexity of environmental chemical issues. In his graduate-level polymer synthesis class, Professor Spivak will show how emerging methods of polymer synthesis can be used to mimic some of nature's complexity and can aid environmental chemistry. Professors Cook (LSU) and Mueller (PSU), both of whom teach senior-level environmental chemistry courses, will incorporate findings and approaches developed in this award to illustrate how fundamental chemical interactions apply to environmental systems and how they play a role in the determination of the fate and transport of anthropogenic chemicals in the environment. This project is aimed at a molecular level understanding of how pesticides interact with soils by studying the uptake of model pesticide molecules by engineered soil surrogates (ESS). Surrogates will be synthesized by functionalizing known mineral surfaces with organic moieties of varying composition and polarity, echoing those found in real soil. Similarly, incorporating fluorinated pesticides of varied polarities and chemical compositions, in concert with a range of NMR methods, will enable molecular level characterization of the interactions. The NMR experiments will be guided and complemented by batch sorption studies, which will report the corresponding macroscopic behavior. Broader impacts of this work include improvement of fate and transport modeling, better practices for pesticide use and design, and an increased understanding of non-covalent interactions. These detailed studies will provide molecular level insights into how pollutants interact and associate with soils.

该项目由化学系环境化学科学项目资助，将使路易斯安那州立大学（LSU）的Robert Cook和David Spivak教授以及宾夕法尼亚州立大学（PSU）的Karl Mueller教授能够介绍博士后、研究生和本科生进行涉及有机、分析和环境化学的跨学科研究。招聘将侧重于来自代表性不足群体的学生，他们将被介绍环境化学问题的复杂性。在他的研究生级聚合物合成课上，斯皮瓦克教授将展示如何使用新兴的聚合物合成方法来模拟自然界的一些复杂性，并有助于环境化学。教授Cook （LSU）和Mueller （PSU）都教授高级环境化学课程，他们将结合本奖项中开发的发现和方法，说明基本化学相互作用如何应用于环境系统，以及它们如何在决定环境中人为化学物质的命运和运输中发挥作用。本项目旨在通过研究工程土壤替代品（ESS）对模型农药分子的吸收，在分子水平上了解农药如何与土壤相互作用。代物将通过功能化已知的矿物表面和不同组成和极性的有机部分来合成，与真实土壤中的有机部分相呼应。同样，将不同极性和化学成分的氟化农药与一系列核磁共振方法相结合，将能够在分子水平上表征相互作用。核磁共振实验将以批吸附研究为指导和补充，该研究将报告相应的宏观行为。这项工作的更广泛影响包括改进命运和运输模型，改进农药使用和设计的做法，以及增加对非共价相互作用的理解。这些详细的研究将为污染物如何与土壤相互作用和联系提供分子水平的见解。