Human health risk assessment for PAHs, phthalates, metals, PCDD/F, DL-PCBs in PM2.5 in two East-Mediterranean urban sites under industrial influence - Université du Littoral Côte d'Opale Accéder directement au contenu
Poster De Conférence Année : 2021

Human health risk assessment for PAHs, phthalates, metals, PCDD/F, DL-PCBs in PM2.5 in two East-Mediterranean urban sites under industrial influence

Résumé

According to WHO, air pollution is responsible for about 11% of the worldwide deaths annually, and therefore considered as the biggest environmental threat to human health. More specifically, particulate matter is seen as the most harmful since it is classified by the International Agency for Research on Cancer (IARC) as “carcinogenic to humans” and can cause various health problems such as asthma, chronic obstructive pulmonary disease, cardiovascular diseases and lung cancer. In this context, health risk assessment studies are crucial for the development of effective risk management policies and strategies taking into account several population exposure parameters. In this study, PM2.5 samples were collected from a one-year field campaign in two urban-industrial sites in Lebanon: the Zouk Mikael site (ZK) that is under the influence of the biggest thermal power plant in Lebanon which runs on Heavy fuel oil and the Fiaa site (FA) that is influenced by the surrounding chemical industries (cement factories along with their corresponding quarries, and a sulfuric acid and phosphate fertilizer industry). The carcinogenic and the non-carcinogenic health risk were estimated for the different classes of compounds such as polycyclic aromatic hydrocarbons(PAHs), phthalates (PAEs) , metals, dioxins, furans, and dioxin-like polychlorobiphenyls (represented as an equivalent of 2,3,7,8-TCDD). The health risk was also calculated for the different exposure pathways (inhalation, ingestion, and dermal contact) and for different age categories (newborns, children, adolescents, and adults). The hazard quotient used to estimate non-carcinogenic risk was found under the USEPA recommended threshold value of 1 for all the studied species (Figure 1). However, the cumulative hazard index for metals was found significant (>1) for newborns at both sites. Lower values were reported for children (0.65-0.79), adolescents (0.40-0.51), and adults (0.42-0.33) at ZK and FA, respectively. The non-carcinogenic levels for the classes of compounds occurred in the following order: metals> PAHs> 2,3,7,8-TCDD equivalent > Phthalates. The results for the carcinogenic study showed that the risk of several compounds cannot be ignored since they Figure 1. Cumulative hazard quotient and cancer risk values for the different compounds and age categories exceeded the acceptable limit of 10-6 such as PAHs for all the age categories at ZK and for children, adolescents and adults at FA. For metals, arsenic and chromium (VI) were significant contributors to the cancer risk at both sites for children and adults while vanadium recorded values higher than the threshold limit for children, adolescents, and adults. The risk assessment study showed that metals and PAHs can cause significant health risks to the population while risks from PAEs and TCDDeq were acceptable.
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Dates et versions

hal-04388042 , version 1 (11-01-2024)

Identifiants

  • HAL Id : hal-04388042 , version 1

Citer

Marc Fadel, Frédéric Ledoux, Charbel Afif, Dominique Courcot. Human health risk assessment for PAHs, phthalates, metals, PCDD/F, DL-PCBs in PM2.5 in two East-Mediterranean urban sites under industrial influence. European Aerosol conference - EAC 2021, Aug 2021, Online, France. ⟨hal-04388042⟩
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