CAJ | 학술논문

建立了控温超声提取-气相色谱三重四级杆质谱测定大气细颗粒物( PM2.5)中多环芳烃( Polycyclic aromatic hydrocarbon,PAHs)的分析方法。 PM2.5中的PAHs用二氯甲烷-正己烷(2：1, V/V)控温超声提取3次,每次提取20 min,气相色谱-串联质谱分析,得到16种PAHs和6种替代物的标准曲线线性关系良好,相关系数均大于0.99,16种PAHs的检出限范围为0.013~0.12μg/L。实验中还观察到PAHs在空白滤膜中有微量存在,回收率实验中得到6种替代物的回收率在58.7%~108.2%之间,16种PAHs的空白滤膜加标的平均回收率在88.3%~104.0%之间,相对标准偏差均低于9.0%,实际滤膜加标的平均回收率在77.3%~98.7%之间,相对标准偏差均低于6.0%,本方法能够满足实际大气样品的测定。
건립료공온초성제취-기상색보삼중사급간질보측정대기세과립물( PM2.5)중다배방경( Polycyclic aromatic hydrocarbon,PAHs)적분석방법。 PM2.5중적PAHs용이록갑완-정기완(2：1, V/V)공온초성제취3차,매차제취20 min,기상색보-천련질보분석,득도16충PAHs화6충체대물적표준곡선선성관계량호,상관계수균대우0.99,16충PAHs적검출한범위위0.013~0.12μg/L。실험중환관찰도PAHs재공백려막중유미량존재,회수솔실험중득도6충체대물적회수솔재58.7%~108.2%지간,16충PAHs적공백려막가표적평균회수솔재88.3%~104.0%지간,상대표준편차균저우9.0%,실제려막가표적평균회수솔재77.3%~98.7%지간,상대표준편차균저우6.0%,본방법능구만족실제대기양품적측정。
An analytical method was described for the determination of polycyclic aromatic hydrocarbons ( PAHs) in atmospheric fine particulate matter ( PM2. 5 ) by gas chromatography-triple quadrupole mass spectrometry with controlled temperature ultrasonic extraction. The PAHs in PM2. 5 were extracted 3 times and each was 20 min with a mixed solution of dichloromethane and n-hexane ( 2: 1 , V/V ) by controlling temperature, and analyzed by gas chromatography-triple quadrupole mass spectrometry. The results showed that 16 PAHs and 6 substitutes had good liner relationship, and the correlation coefficients were above 0. 99, the lowest detection limits for 16 PAHs were between 0. 013-0. 12 μg/L. PAHs were also detected in blank membrane, and the precision test shows that 6 substitutes recoveries range from 58. 7% to 108. 2%, the average recoveries in blank membrane of 16 PAHs were between 88 . 3%-104 . 0%, the relative standard deviationa of all PAHs are below 9 . 0% but actual membrane average recoveries are between 77 . 3%-98 . 7%, and the relative standard deviationa of all PAHs were below 6 . 0%. This method can meet the detection requirements for atmospheric samples.