Open Access Research Article

Contamination Status of Polycyclic Aromatic Hydrocarbons (PAH s) In Atmospheric Particulate Matter PM2.5 Samples of a Semi-Residential Area of Dhaka, Bangladesh

YN Jolly1*, A Tabassum2, MA Rahman2, MS Rahman 1, Sohel Rana3, S Akter1 and BA Begum1

1Atmospheric and Environmental Laboratory, Chemistry Division, Atomic Energy Centre, Dhaka

2Departmentof Chemistry, Dhaka University, Bangladesh

3Organic Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, Dhaka

Corresponding Author

Received Date: August 04, 2020;  Published Date: November 11, 2020

Abstract

This study deals with the determination of the polycyclic aromatic hydrocarbons (PAHs) in the atmospheric particulate matters (PM2.5) at a semi residential site of Gazipur, Dhaka, Bangladesh. Source identification and possible human health impact of polycyclic aromatic hydrocarbon was evaluated as well. A total of 20 samples were collected in six weeks period of time. Polycyclic Aromatic Hydrocarbons (PAH’s) were determined using gas chromatography-mass spectrometry. The average concentration of Anthracene, Phenanthrene, Pyrene, Chrysene, Benzo (a) anthracene, Benzo(a)pyrene, perylene were found to be 0.309, 0.159, 0.227, 2.120, 1.954, 2.269 and 3.373μgm-3 respectively. Two-way ANOVA test revealed that the concentration of different PAHs species (Fcal> Fcrit) are significantly different from each other at a 95% confidence level. The main contributory sources for PAHs were found gasoline exhaust, diesel exhaust, wood burning and brick kilns. The result revealed that these compounds are present in a higher level in the atmosphere when compared with the value of other countries in the world. Concentration of highly carcinogenic Benzo(a) pyrene was in a range where carcinogenic effect is an immediate threat in case of long-time exposure and hence regular monitoring is suggested.

Keyword: Polycyclic Aromatic Hydrocarbon; Air-Metrics Mini-Vol Samplers; Gas Chromatography-Mass Spectrometry; Quartz Filters

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