【摘要】 目的建立同时检测土壤中18种邻苯二甲酸酯类(PAEs)化合物的方法。方法考察多种提取溶剂和不同比例的PSA和LC-C18填料组合,结合气相色谱-质谱联用法,采用选择离子监测模式,同位素内标法定量。结果 18种PAEs加标回收率为80.2%~109.5%,相对标准偏差为3.2%~9.7%。方法检出限(LOD)为0.025~0.05 mg/kg(S/N=3),定量限(LOQ)为0.1~0.2mg/kg(S/N=12)。结论实验建立的方法重现性好,快速简便,适用于同时检测土壤中邻苯二甲酸酯类化合物含量。更多还原

【Abstract】 Objective To establish a method for simultaneous determination of 18 phthalate esters(PAEs)in soil.Methods The extraction solvents and proportion of PSA and LC-C18 were investigated.The identification and quantification were performed by gas chromatography-mass spectrometry under selectiveion monitoring(SIM)mode,the quantification was performed by isotope internal standard method.Results The average recovery rates of 18 PAEs spiked in soil matrices ranged from 80.2%to 109.5% with the relative standard deviations(RSD,n=6)of 3.2%-9.7 %;the LODs of 18 PAEs using this method ranged from 0.025 mg/kg to 0.05 mg/kg(S/N=3),while the LOQs of 18 PAEs using this method ranged from 0.1 mg/kg to 0.2 mg/kg(S/N=12).Conclution The established method is quick and easy to operate,with good reproducibility,which is suitable for simultaneous analysis of phthalate esters in soil.更多还原