Risk assessment of PAHs in dusts from surfaces of abandoned automobiles at auto-workshops of three semi-urban areas of Eastern Nigeria: Compositional patterns and source apportionments DOI Creative Commons
Chideraa Courage Offor, John Kanayochukwu Nduka

Environmental Pollution and Management, Journal Year: 2024, Volume and Issue: 1, P. 24 - 31

Published: June 6, 2024

The concentrations, sources, compositional patterns, and risk assessments of PAHs in dust on abandoned automobiles at auto-workshops three semi urban areas were studied. Dust samples randomly collected from least five car surfaces automobile workshops located Rumuodomaya-Ogale, Ekwulobia, Awka between December 2019 March 2020, analysed for using the Buck M910 Gas Chromatography-Flame Ionization Detector. Car surface Rumuodomaya-Ogale showed highest PAH concentration 2.348 µg/g while that had lowest total 0.129 February 2020. Ekwulobia consisted mostly 3-ring throughout month, except January high BaPTEQ values, indicating a potential carcinogenic workers. Considerable cancer may arise prolonged exposure adult's workers to via dermal contact inhalation. ingestion values children higher than adult counterparts (except Awka, 2019). principal component analysis suggested influence exhaust emissions source dusts workshops. There is need have wear personal protection equipment (PPE) duty reduce associated with particles.

Language: Английский

Distribution and source apportionment of polycyclic aromatic hydrocarbons in indoor dust of an emerging residential city in Nigeria: implication on human health DOI Creative Commons
Abiodun O. Adegunwa, John Adekunle Oyedele Oyekunle, Odunayo T. Ore

et al.

Environmental Pollution and Management, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

1
Formation of Polycyclic Aromatic Hydrocarbons (PAHs) in Thermal Systems: A Comprehensive Mechanistic Review DOI Creative Commons
Mohammednoor Altarawneh, Labeeb Ali

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(22), P. 21735 - 21792

Published: Nov. 1, 2024

Polycyclic aromatic hydrocarbons (PAHs) are formed invariably through oxidative and pyrolytic degradation of organic materials fuels. Understanding the highly complex reaction mechanisms that dictate their synthesis in thermal systems has been given a great deal focus. Such interest stems from two broad perspectives, namely, enhancing efficiency combustion system, energy recovery fuels protecting environment. Health environmental effects widely vary among PAHs where certain compounds exhibit carcinogenic tendencies. This critical review mainly aims to provide general mechanistic view commonly discussed formation pathways PAHs. The attained knowledge often incorporates experimental measurements kinetic modelings, as well mapped out by quantum chemical calculations. A sampling species is typically conducted via molecular beam (MB)–mass spectroscopy (MS) technique connected reactor (flow reactor, jet-stirred or shock tube). Generally, PAH precursors encompass four categories (radicals molecules): acetylenic compounds, alkyl radicals, phenyl resonance-stabilized cyclic radicals. Overall, relevance mechanism depends on consistency between proposed model pathways, profiles products at investigated conditions (i.e., temperatures, pressures, distance burners). effect seeding common precursors, with other explored surveying pertinent studies. Growth higher PAHs, including toxic pyrene, most likely involves hydrogen abstraction acetylene addition (HACA)-like starting anthracene bimolecular reactions involve benzyl radicals indene molecules. synergistic collaboration different suggested account for observed fast growth rate As experimentally shown, sequential mass 15 u, 24 26 74 indicate routes MAC, HACA, HAVA*, PAC routes, respectively. Whether physical process initial step conversion into soot (the inception step) still debated literature. Recent evidence underscores commence creating dimers clustering under real flame 400–1200 K). Formation synthetic natural polymers ensues condensation fragments structural arrangements polymeric entities, prior fragmentation. surveyed presented this will be useful readers who aim comprehend chemistry underlying systems.

Language: Английский

Citations

5
House dust - unwanted problem for the occupant of the facility, but a promising source of scientific information about the quality of indoor environment DOI

Michalina Pielaszewska,

Karolina Budnarowska,

Mariusz Marć

et al.

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112987 - 112987

Published: April 1, 2025

Language: Английский

Citations

0
Risk assessment of PAHs in dusts from surfaces of abandoned automobiles at auto-workshops of three semi-urban areas of Eastern Nigeria: Compositional patterns and source apportionments DOI Creative Commons
Chideraa Courage Offor, John Kanayochukwu Nduka

Environmental Pollution and Management, Journal Year: 2024, Volume and Issue: 1, P. 24 - 31

Published: June 6, 2024

The concentrations, sources, compositional patterns, and risk assessments of PAHs in dust on abandoned automobiles at auto-workshops three semi urban areas were studied. Dust samples randomly collected from least five car surfaces automobile workshops located Rumuodomaya-Ogale, Ekwulobia, Awka between December 2019 March 2020, analysed for using the Buck M910 Gas Chromatography-Flame Ionization Detector. Car surface Rumuodomaya-Ogale showed highest PAH concentration 2.348 µg/g while that had lowest total 0.129 February 2020. Ekwulobia consisted mostly 3-ring throughout month, except January high BaPTEQ values, indicating a potential carcinogenic workers. Considerable cancer may arise prolonged exposure adult's workers to via dermal contact inhalation. ingestion values children higher than adult counterparts (except Awka, 2019). principal component analysis suggested influence exhaust emissions source dusts workshops. There is need have wear personal protection equipment (PPE) duty reduce associated with particles.

Language: Английский

Citations

1