建立了超声提取-分散液相微萃取联合气相色谱质谱法测定大气PM2.5中15种邻苯二甲酸酯的方法.样品经过二氯甲烷和丙酮(1∶1,V/V)提取后,以1,2-二氯苯为萃取剂、丙酮为分散剂,运用分散液相微萃取法进一步萃取大气颗粒物PM25中的邻苯二甲酸酯.结果显示,方法检出限为0.29-4.77 pg· m-3,最低检出限为0.96-15.74 pg·m-3,加标回收率为72.7％-110.9％,相对标准偏差为0.6％-9.4％,将此方法应用于苏州市某区大气PM2.5中的邻苯二甲酸酯的测定,检测出大部分邻苯二甲酸酯.
An analytical method for the simultaneous determination of fifteen phthalate esters in air particulate matter (PM2.5) was developed using ultrasonic extraction-dispersive liquid-liquid microextraction combined with gas chromatography-mass spectrometry.The samples were extracted with dichloromethane-acetone (1∶ 1,V/V) mixed solvent by ultrasonic extraction.1,2-dichlorobenzene was used as extractant and acetone was used as dispersive solvent,dispersive liquidliquid microextraction was applied to analyze air particulate matter (PM2.5) samples.The limits of detection (LOD) ranged from 0.29 to 4.77 pg·m-3 and the limits of quanification (LOQ) ranged from 0.96 to 15.74 pg· m-3.The spiked recoveries ranged from 72.7％ to 110.9％ and the RSDs ranged from 0.6％ to 9.4％,respectively.This new method was successfully applied for the analysis of the phthalate esters in air particulate matter (PM2.5) in Suzhou and most of PAEs were detected in the samples.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%