摘要
建立了SinCHERS-高效液相色谱串联质谱(HPLC-MS/MS)技术的土壤样品中20种全氟和多氟类化合物(Per-and polyfluoroalkyl substances,PFAS)的萃取、净化和检测方法.采用无水硫酸镁、层间距为20 nm的石墨化碳黑、HLB离子交换材料的组合作为SinCHERS前处理净化小柱的净化填料,使用HPLC-MS/MS检测,内标法定量.目标化合物的方法检出限在0.48—2.31 ng·g^(−1)dw(干重)之间,方法回收率在71.0%—110.6%之间,标准偏差在2.7%—13.4%之间.相较于固相萃取(SPE)样品前处理流程,SinCHERS净化方法大大缩短了样品中污染物萃取净化的时间,降低了经济成本,优化了某些长链PFAS的萃取效率,且具有相对较高的稳定性.提高了在16 min内同时检测20种PFAS的检测效率,为环境中PFAS评估提供更为方便的检测方法以得到有效的基础数据.
A method for the extraction,purification,and determination of 20 per-and polyfluoroalkyl substances(PFAS)in environmental solid samples by SinCHERS-high liquid chromatography-electrospray ionization-mass spectrometry(HPLC-MS/MS)was established.The combination of anhydrous magnesium sulfate,graphitized carbon black with interlayer spacing of 20 nm,and HLB ion exchange material was used as the cleanup sorbents in SinCHERS cartridge.20 PFAS were determined by HPLC-MS/MS using internal standard method.The method detection limit of the target compounds were 0.48—2.31 ng·g^(−1) dw,the recoveries were 71.0%—110.6%,and the standard deviations were 2.7%—13.4%.Compared with SPE sample pretreatment,this method is more time saving,more economical,and more stable.It also improves the recoveries of some longchain PFAS.It provides a more convenient detection method for PFAS evaluation in the environment to obtain effective basic data.
作者
张梦
邵秀清
王佩
吕永龙
史雅娟
王聪
周云桥
张少玉
ZHANG Meng;SHAO Xiuqing;WANG Pei;LYU Yonglong;SHI Yajuan;WANG Cong;ZHOU Yunqiao;ZHANG Shaoyu(State Key Laboratory of Urban and Regional Ecology,Research Centre for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China;University of Chinese Academy of Sciences,Beijing,100049,China;College of the Environment&Ecology,Xiamen University,Xiamen,361102,China;Anybond(Tianjin)Co.,Ltd,Tianjin,300134,China)
出处
《环境化学》
CAS
CSCD
北大核心
2022年第11期3514-3524,共11页
Environmental Chemistry
基金
中国科学院国际大科学计划培育项目(121311KYSB20190029)
国家自然科学基金(717611470001,41977360)
国家重点研发计划项目(2018YFC1801103)资助。
关键词
SinCHERS
高效液相色谱串联质谱
全氟和多氟类化合物.
SinCHERS
high performance liquid chromatography-electrospray ionization-mass spectrometry
Per-and polyfluoroalkyl substances
