Research of detection methods for 16 kinds of PAHs in atmospheric fine particulate matter PM2.5

ZHOU Hao-feng; LI Si-sheng; GE Cheng-xiang; LI Chang-an

doi:10.19837/j.cnki.ahyf.2021.02.001

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Anhui Journal of Preventive Medicine ›› 2021, Vol. 27 ›› Issue (2) : 85-90. DOI: 10.19837/j.cnki.ahyf.2021.02.001

Research of detection methods for 16 kinds of PAHs in atmospheric fine particulate matter PM_2.5

ZHOU Hao-feng, LI Si-sheng, GE Cheng-xiang, LI Chang-an

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Abstract

Objective To develop an improved high performance liquid chromatography(HPLC) method for the determination of 16 kinds of polycyclic aromatic hydrocarbons(PAHs) in PM_2.5 in Hefei. Methods After collecting air,1/4 of filter membrane was cut up,acetonitrile was added for ultrasonic extraction,and determined by HPLC method.The special column for PAHs (4.60mm × 250mm,5.0 μ m) was used,the mobile phase was water and acetonitrile,the flow rate was 1.5ml/min,gradient elution method was used,PDA detector and FLR detector were detected at the same time. Results The blank spike recovery rates of 16 kinds of PAHs ranged from 72%~105%.The correlation coefficient of linear equation of standard curve was r>0.999.The relative standard deviation (RSD) was 0.61%~7.72%.The detection limit was 0.004~0.023ng/m³,and the lower limit of quantification was 0.014~0.094ng/m³ (sampling volume was 144 m³). Conclusion The improved method has the advantages of simplicity,rapidity and sensitivity in the detection of PM_2.5 in the atmosphere.It improves the recovery rate of PAHs with low ring number and the separation effect of PAHs,and has high application value.

Key words

Atmosphere / Fine Particulate Matter PM_2.5 / PAHs / Ultrasonic extraction / Ultra performance liquid chromatography (UPLC)

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ZHOU Hao-feng, LI Si-sheng, GE Cheng-xiang, LI Chang-an. Research of detection methods for 16 kinds of PAHs in atmospheric fine particulate matter PM_2.5[J]. Anhui Journal of Preventive Medicine. 2021, 27(2): 85-90 https://doi.org/10.19837/j.cnki.ahyf.2021.02.001

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