摘要
本文建立了基于液相色谱串联四极杆质谱联用技术同时测定海水和海底泥中26种常见有机磷酸酯类(OPEs)阻燃剂的方法.海水中的OPEs经过极性修饰的聚合物反相固相萃取Bond Elut PPL柱富集和净化,采用同位素稀释法进行定量.在0.5—100 ng·L^-1浓度范围内,大部分OPEs的线性响应良好,回归系数大于0.99.海水中OPEs检测方法检出限在0.0003—26.0 ng·L^-1,3个添加水平下添加回收率和相对标准偏差分别在51.8%—123.0%和0.7%—13.6%之间;海底泥中OPEs方法检出限在0.0001—0.02μg·kg^-1之间,添加回收率和相对标准偏差分别在52.1%—118.1%和1.5%—12.0%之间,结果表明,该方法灵敏、准确、可靠,可以满足环境海水与海底泥样品中痕量OPEs的检测要求.
A method was developed for the simultaneous determination of 26 common organophosphate esters(OPEs)flame retardants in seawater and sediments by liquid chromatography tandem quadrupole mass spectrometry.The OPEs in seawater were enriched and purified by the polar-modified polymer reversed-phase solid phase extraction,Bond Elut PPL column,and quantified by the isotope dilution method.The method delivered excellent linearity for most OPEs over the range of 0.5—100 ng·L^-1,with linear regression coefficients higher than 0.99.The detection limits of OPEs in seawater ranged from 0.0003 ng·L^-1 to 26.0 ng·L^-1,and the recoveries ranged from 51.8%to 123.0%at low,medium and high spiked levels with relative standard deviations(RSDs)within 0.7 to 13.6%,respectively.The detection limits of OPEs in sediments ranged from 0.0001μg·kg^-1 to 0.02μg·kg^-1,and the recoveries ranged from 52.1%to 118.1%respectively with RSDs within 1.5%to 12.0%.The results show that the method is sensitive,accurate and reliable,and can meet the requirements for the determination of trace OPEs in environmental seawater and sediments samples.
作者
刘星
万正瑞
杜伟
孙禾琳
王卫平
吴翠玲
姚子伟
LIU Xing;WAN Zhengrui;DU Wei;SUN Helin;WANG Weiping;WU Cuiling;YAO Ziwei(National Marine Environmental Monitoring Center,Dalian,116023,China;State Environmental Protection Key Laboratory of Coastal Ecosystem,Dalian,116023,China;Agilent Technologies(China)Co.,Ltd.,Beijing,100102,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第10期2947-2951,共5页
Environmental Chemistry
基金
国家自然科学基金(21777035,41676097)资助.
关键词
有机磷酸酯(OPEs)
阻燃剂
极性修饰
反相固相萃取
液相色谱串联质谱法
海水
海底泥
organophosphate esters(OPEs)
flame retardant
polar modification
reverse-phase solid phase extraction
liquid chromatography-tandem quadrupole mass spectrometry
seawater
sediments