Sulfonic acid-based metal organic framework functionalized magnetic nanocomposite combined with gas chromatography-electron capture detector for extraction and determination of organochlorine  

作　　者：Ying Wang Qing Ye Menghuan Yu Xijun Zhang Chunhui Deng 

机构地区：[1]School of chemistry and Environmental Science,Shangrao Normal University,Shangrao 334001,China [2]Department of Chemistry,Fudan University,Shanghai 200433,China

出　　处：《Chinese Chemical Letters》2020年第7期1843-1846,共4页中国化学快报（英文版）

摘　　要：The metal organic framework functionalized with sulfonic acid was combined with magnetic nanoparticles to fabricate a new nanocomposite(denoted as Fe3O4@PDA@Zr-SO3H).By combining with gas chromatography-electron capture detector,the resulting Fe3O4@PDA@Zr-SO3H nanocomposite was successfully used as a high-efficiency adsorbent for pre-concentrating eight organochlorine pesticides from water sample in environment.Apart from the ability of fast separation,the as-prepared Fe3O4@PDA@Zr-SO3H nanocomposite also exhibited high adsorption capacity for organochlorine pesticides.With the use of optimal experimental conditions,the linear relationship can be obtained in the range of 0.05~300μg/L,the correlation coefficient was over 0.9978,and the relative standard deviation was located in 2.5%-7.7%.Moreover,the limit of detection and quantification was between0.005-0.016μg/L and 0.017~0.050μg/L.Finally,the nanocomposite was used for the determination of organochlorine pesticides from environmental water samples,and displayed the recovery of 82%-118%.

关 键 词：Organochlorine pesticides Metal-organic framework Magnetic nanocomposite Water Gas chromatography-electron capture detector 

分 类 号：O657.71[理学—分析化学] X830.2[理学—化学]