课题基金基金详情
具有阵列微孔表面结构的金属纤维的制备及在PCBs固相微萃取中的应用
结题报告
批准号:
21974043
项目类别:
面上项目
资助金额:
66.0 万元
负责人:
李保会
学科分类:
分离与分析
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
李保会
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中文摘要
作为具有“三致”特性的持久性有机污染物,多氯联苯(PCBs)因其在环境的分布广泛性及极低的含量而迫切需要发展高选择性、高灵敏度的前处理方法。本课题拟制备基于具有阵列微孔表面的金属材料,并将其用于环境中PCBs的分析检测。.建立阵列微孔金属材料的电化学腐蚀方法,制备具有大表面积、基于阵列微孔金属材料的固相微萃取(SPME)吸附材料,发展一种基于阵列微孔金属材料的SPME-GC分析新方法,以满足环境中痕量PCBs的检测需求。制备共价有机框架结构材料(COF)嫁接的阵列微孔材料,实现SPME萃取纤维可重复性及耐久性的提高,并利用COF丰富多样的构筑单元、可调结构功能实现不同种类PCBs的高选择性吸附。建立一种基于COF嫁接阵列微孔材料的SPME-GC联用的分析方法,富集水环境中的PCBs,使其达到常规检测器可检测的程度,为环境中POPs的评估与治理提供简便、快捷、高灵敏度、高选择性的分析方法。
英文摘要
In view of wide environmental distribution properties and relatively low concentration of polychlorinated biphenyls (PCBs) in environment and its malgenic, carcinogenic, teratogenic behaviour to biosome and human beings, it is necessary to develop a high selectivity and sensitivity pre-treatment method for PCBs to improve the PCBs concentration prior to separation. .Herein, a series of pre-concentration methods based on lattice micro-pore metal materials were developed and the pretreatment methods were employed to analysis PCBs in water environment. An electrochemical erosion method to obtain lattice micro-pore metal materials is built and employed to prepare solid phase micro extraction (SPME) adsorption materials based on lattice micro-pore metal materials using all kinds of metal fibers. A new SPME-GC analysis and separation methods is built using lattice micro-pore metal materials as adsorption so as to detect the trace PCBs in environment. The adsorption mechanism is explored..The lattice micro-pore SPME adsorption materials grafted with covalent organic frameworks (COF) are prepared in order to obtain SPME adsorption fibers with higher reproductivity and durability. Then, the high selective adsorption of different category PCBs is gained using the versatile pore construction units and adjustable structural function of COF. An enrichment method that combines SPME with GC of PCBs is developed while lattice micro pore fiber grafted with COF, so that PCBs in water environment is detectable by routine UV detection. At last, by means of PCBs detection based on micro-pore SPME adsorption materials, one kind of simple, rapid, high sensitivity and high selectivity analytical method for water environment POPs assessment and control is provided.
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DOI:10.20087/j.cnki.1672-8114.2023.08.021
发表时间:2023
期刊:当代化工研究
影响因子:--
作者:申雪通;杨晓丹;杨梦奇;李梓涵;李保会
通讯作者:李保会
DOI:10.20087/j.cnki.1672-8114.2023.07.017
发表时间:2023
期刊:当代化工研究
影响因子:--
作者:杨梦奇;申雪通;李梓涵;李保会
通讯作者:李保会
基于MOFs材料的样品预处理-电色谱联用技术的开发及其在环境中痕量PCBs分析中的应用
  • 批准号:
    21275053
  • 项目类别:
    面上项目
  • 资助金额:
    78.0万元
  • 批准年份:
    2012
  • 负责人:
    李保会
  • 依托单位:
国内基金
海外基金