高吸附量ZIF-67合成及其在水土体系三氯乙烯检测中的应用  

Synthesis of High Adsorption Capacity ZIF-67 and Its Application in the Detection of Trichloroethylene in Water-Soil System

作　　者：马瑞 檀顶 张玥 江煜 蒋倩[2] 王小治[1] 刘海龙 刘云 MA Rui;TAN Ding;ZHANG Yue;JIANG Yu;JIANG Qian;WANG Xiaozhi;LIU Hailong;LIU Yun(College of Environmental Science and Engineering,Yangzhou University,Yangzhou,Jiangsu 225000,China;State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 211135,China)

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225000 [2]土壤与农业可持续发展全国重点实验室(中国科学院南京土壤研究所),南京211135

出　　处：《土壤》2025年第1期157-166,共10页Soils

基　　金：国家重点研发计划项目(2020YFC1807200);江苏省碳达峰碳中和科技创新专项(BK20220004)资助。

摘　　要：在常温条件下合成金属有机骨架材料ZIF-67,制备固相微萃取涂层,建立了三氯乙烯(TCE)固相微萃取方法,并对水土体系中TCE进行了检测。结果表明:ZIF-67具有高比表面积以及微孔结构,对气态TCE最大饱和吸附量达626 mg/g。采用物理涂敷法制备ZIF-67固相微萃取纤维,在240℃的解吸温度下,涂层材料的色谱基线稳定,在水和水土体系中最佳萃取温度和萃取时间均分别为60℃和30 min;土壤的高吸附固定能力不利于水土体系中TCE的萃取。ZIF-67固相微萃取方法检出限低,样品测定重复性好,可应用于实际水土中TCE的微量检测。In this study,a novel metal organic framework material,ZIF-67,was synthesized at room temperature for the development of solid-phase microextraction(SPME)coatings designed for the detection of trichloroethylene(TCE).The results showed that ZIF-67 exhibited the high specific surface area and a microporous structure.Its maximum saturated adsorption capacity for gaseous TCE reached 626 mg/g.SPME fibers coated with ZIF-67 were prepared using physical coating method.At a desorption temperature of 240℃,the chromatographic baseline of the coating material remained stable.The optimal extraction temperature in both water and water-soil system is 60°C,with an optical extraction time of 30 minutes.The high adsorption and fixation of TCE onto soils were found to hinder efficient TCE extraction.This method,with a low detection limit and good repeatability,is suitable for the trace detection of TCE in water and soil in practical environments.

关 键 词：固相微萃取 三氯乙烯 土壤 水体 

分 类 号：O657.7[理学—分析化学]