University Of Tehran Press Pollution 2383-451X 8 2 2022 04 01 Potential Application of Synchronous Fluorescence Spectroscopy to Identification of PAHs in Airborne PM2.5 637 656 85985 10.22059/poll.2022.327680.1144 EN Homdutt Sharma Department of Physics, Amity Institute of Applied Sciences, Amity University, Sector 125, Noida - 201 313, India Vinod Kumar Jain Tezpur University, Tezpur - 784028, Assam, India Zahid Husain Khan Department of Physics, Jamia Millia Islamia, New Delhi - 110025, India Journal Article 2021 07 24 A simple and rapid method for the highly sensitive determination of polycyclic aromatic hydrocarbons (PAHs) from airborne fine particulate matter (PM_2.5) in an urban environment of Delhi was developed. The target compounds were 10 of the 16 United States Environmental Protection Agency (US-EPA) priority PAHs: fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo[a]pyrene, dibenzo(ah)anthracene, benzo(ghi)perylene, indeno(1,2,3-cd)pyrene. For collecting the samples, the following two locations in Delhi (India) were chosen: ITO and Okhla Industrial Area.  Two sets of samples at these locations of were collected for the purpose of investigation. The fine particulate matter samples were collected on glass fiber filter papers for 24h, from which the PAHs were extracted using dichloromethane (DCM) and hexane using ultrasonication method. Comparison of the characteristic emission of spectra of PAHs with standard spectra indicated the degree of condensation of aromatic compounds present in the investigated mixtures. However, this identification could be more effective with the use of the respective values of Δλ parameter for each particular component of the mixture. It has been found that the concentration of the PAHs is maximum during the winter season and minimum during the summer and monsoon seasons at both the locations.  https://jpoll.ut.ac.ir/article_85985_31d46373b963adaa52ab19d518e478aa.pdf