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Black carbon and elemental characterization of PM2.5 in dense traffic areas in two cities in Fiji, a small Island developing state

Mani, Shavneet and Peltier, R.E. and Mestre, M.Le and Gunkel-Grillon, P. and Shah, S. and Mani, Francis S. (2022) Black carbon and elemental characterization of PM2.5 in dense traffic areas in two cities in Fiji, a small Island developing state. Science of The Total Environment, 845 . NA. ISSN 0048-9697

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Abstract

PM2.5 characterizations are essential in understanding its impact on the health of the exposed population. Sampled PM2.5 by Mani et al. (2020) was characterized to determine atmospheric metal concentration and inhalation health risk in Suva and Lautoka Cities, the only two cities in Fiji and one of the largest in the South Pacific Islands. Twenty-two elements (Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, P, Pb, S, Si, Sr, V, Zn) were analyzed using ICP-OES. Black Carbon (BC) sampling was also done at three different sites in Suva City, namely, Fiji National University Samabula Intersection site, Suva City Bus Station site and the Reservoir Road Community Settlement Site as well as at Lautoka City Bus Station. Mean BC concentrations over the sampling period were found to be 3.9 ± 2.9 (median = 3.3 μg/m3), 2.6 ± 2.7 μg/m3 (median = 1.7 μg/m3), 2.4 ± 2.3 μg/m3 (median = 1.7 μg/m3) and 4.0 ± 4.7 μg/m3 (median = 2.4 μg/m3) respectively. Health risk assessments (Carcinogenic Risk (CR) and Non-Carcinogenic Risk (HQ)) were also done to assess the risk of inhalation exposure in adults and children. The Hazard Index for children in Lautoka (HI = 1.03) was found to slightly exceed the safe level of 1. This study provides the first inventory of atmospheric particulate bound metal concentrations and diurnal BC profiles in Fiji and informs policy makers and scientists for further studies.

Item Type: Journal Article
Uncontrolled Keywords: Black carbon Trace elements Metals Health risk PM2.5
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > Q Science (General) > Q1-390 Science (General)
Q Science > QD Chemistry
Divisions: School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS)
Depositing User: Shavneet Mani
Date Deposited: 20 Sep 2023 03:27
Last Modified: 20 Sep 2023 03:27
URI: https://repository.usp.ac.fj/id/eprint/14195

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