基于磁性纳米豆荚材料的雾霾中多环芳烃的分析新方法研究

With the increasing environmental pollution, many provinces and cities in our country have been shrouded by a wide range and strong haze weather for a long time. More attentions have been paid to the haze pollution, because strong fog has potential harm to human and animal health. Among all the pollutants, polycyclic aromatic hydrocarbons (PAHs) are the most serious harm of pollutants because of its carcinogenic and teratogenic toxicity, and pose a risk of causing adverse effects to animals and human health. Therefore, the detection of PAHs in fog sample is very important, which is the scientific problems needed to resolve. The traditional method of sample preparation of fog is mainly solvent extraction, but this cannot be have satisfied separation and enrichment of the fog. In order to solve this situation, this project will with magnetic nanopeapods as a bridge, combine with solid phase extraction in complex sample separation and enrichment of the powerful advantage and the high sensitivity advantages of LC-MS/MS in the field of pollutant detection, develop a set of efficient separation, enrichment and high sensitivity detection of complex environment water separation detection method, provide the new theoretical basis and scientific basis for control of fossil fuel and vehicle emissions in China development strategy and harm reduction of the fog.

随着环境污染日益加重，强雾霾天气引起了人们的广泛关注。特别是雾霾中的多环芳烃污染物，因具有致癌、致畸等毒害性，对人类健康的危害尤为严重。因此，对雾霾中多环芳烃的检测分析十分重要，是目前急需解决的科学问题。然而，雾霾的基质组成复杂，对其直接检测分析灵敏度低，采取适当的分离富集方法十分必要。传统对雾霾的样品前处理方法主要是溶剂萃取，此方法已经不能满足当下雾霾的分析要求。针对这一现状，本项目以磁性纳米豆荚为桥梁，结合固相萃取在复杂样品分离富集方面的强大优势以及液相色谱-质谱仪在污染物检测领域的快速、高灵敏度等优点，开发出集高效分离富集和高灵敏检测为一体的复杂雾霾样品的分离检测方法，从而为我国控制化石燃料及汽车尾气排放的发展战略，以及降低雾霾带来的危害提供了理论基础与科学依据。

随着环境污染日益加重，强雾霾天气引起了人们的广泛关注。特别是雾霾的成分十分复杂，雾霾中各类污染物的分析成为分析化学家研究的重点。本项目以多环芳烃和重金属污染物为主要研究对象，探索雾霾中多环芳烃的检测分析和开发清除重金属污染物的新材料和性能研究。针对这两方面的科学问题，在本项目的资助下，设计并采用简单、快速的水热合成法制备了磁性纳米豆荚材料、硫化钼-氧化铈纳米杂化体材料、硫化钼纳米片负载的氮掺杂碳微米管复合材料，通过各种表征方法系统研究了材料微观形貌和性质，并讨论其作为富集材料方面的性能研究。系统的研究了吸附的最佳条件、吸附动力学、吸附等温线、吸附热力学，探讨了材料的表面结构、性质与富集能力之间的构效关系。基于固相萃取和吸附法在复杂样品分离富集方面的强大优势，开发了高效分离富集的新材料，为复杂雾霾样品污染物的分离检测提供新方法，为控制和降低雾霾带来的危害提供了理论基础与科学依据。