Levels, sources and potential risks of polycyclic aromatic hydrocarbons in Futian Mangrove Wetland and in Shenzhen Bay, Shenzhen, China

2015 ◽  
pp. 869-873
Author(s):  
Li Deng ◽  
An-ping Lei ◽  
Fei-xiang Wang
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Mangrove Wetland ◽  
Polycyclic Aromatic ◽  
Potential Risks

Distribution, sources and exposure risk of Polycyclic aromatic hydrocarbons in soils, indoor and outdoor dusts from Port Harcourt City, Nigeria

2021 ◽  
Author(s):  
Chinedu Jude Ossai ◽  
Chukwujndu Maxwell Azubuike Iwegbue ◽  
Godswill O Tesi ◽  
Chijioke Olisah ◽  
Francis E Egobueze ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Exposure Risk ◽  
Port Harcourt ◽  
Polycyclic Aromatic ◽  
Potential Risks ◽  
Outdoor Dust ◽  
Indoor And Outdoor ◽  
Hydrocarbons In Soils

In this study, we evaluated the concentrations, composition, sources, and potential risks of polycyclic aromatic hydrocarbons (PAHs) in soils, and indoor and outdoor dust from Port Harcourt city in Nigeria....

scholarly journals Multivariate Analysis for Assessing Sources, and Potential Risks of Polycyclic Aromatic Hydrocarbons in Lisbon Urban Soils

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 139 ◽  
Author(s):  
Anabela Cachada ◽  
Ana Dias ◽  
Amélia Reis ◽  
Eduardo Ferreira da Silva ◽  
Ruth Pereira ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Urban Planning ◽  
Aromatic Hydrocarbons ◽  
Urban Soils ◽  
Cost Effective ◽  
City Center ◽  
Polycyclic Aromatic ◽  
Potential Risks ◽  
The City

Urban soils quality may be severely affected by polycyclic aromatic hydrocarbons (PAHs) contamination, as is the case of Lisbon (Portugal). However, to conduct a risk assessment analysis in an urban area can be a very difficult task due to the patchy nature and heterogeneity of these soils. Thus, the present study aims to provide an example on how to perform the first tier of a risk assessment plan in the case of urban soils using a simpler, cost effective, and reliable framework. Thus, a study was conducted in Lisbon to assess the levels of PAH, their potential risks to the environment and human health, and to identify their major sources. Source apportionment was performed by studying PAHs profiles, their relationship with potentially toxic elements, and general characteristics of soil using multivariate statistical methods. Results showed that geostatistical tools are useful for evaluating the spatial distribution and major inputs of PAHs in urban soils, as well as to identify areas of potential concern, showing their usefulness in risk assessment analysis and urban planning. Particularly, the prediction maps obtained allowed for a clear identification of areas with the highest levels of PAHs (close to the airport and in the city center). The high concentrations found in soils from the city center should be a result of long-term accumulation due to diffuse pollution mostly from traffic (through atmospheric emissions, tire debris and fuel exhaust, as well as pavement debris). Indeed, most of the sites sampled in the city center were historical gardens and parks. The calculation of potential risks based on different models showed that there is a high discrepancy among guidelines, and that risks will be extremely associated with the endpoint or parameters used in the different models. Nevertheless, this initial approach based on total levels was useful for identifying areas where a more detailed risk assessment is needed (close to the airport and in the city center). Therefore, the use of prediction maps can be very useful for urban planning, for example, by crossing information obtained with land uses, it is possible to define the most problematic areas (e.g., playgrounds and schools).

scholarly journals Polycyclic aromatic hydrocarbons in primary school environments: Levels and potential risks

2017 ◽  
Vol 575 ◽  
pp. 1156-1167 ◽  
Author(s):  
Marta Oliveira ◽  
Klara Slezakova ◽  
Joana Madureira ◽  
Eduardo de Oliveira Fernandes ◽  
Cristina Delerue-Matos ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Primary School ◽  
Aromatic Hydrocarbons ◽  
School Environments ◽  
Polycyclic Aromatic ◽  
Potential Risks

scholarly journals Source Apportionment and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Black Carbon Monitored in Port Harcourt, Rivers State, Nigeria

2020 ◽  
Vol 5 (8) ◽  
pp. 653-663
Author(s):  
Muhyideen Oloyede ◽  
Precious Nwobidi Ede
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Total Concentration ◽  
Carcinogenic Risk ◽  
Dry Season ◽  
Wet Season ◽  
Port Harcourt ◽  
Polycyclic Aromatic ◽  
Potential Risks ◽  
Rivers State

The purpose of this study was to determine concentrations of polycyclic aromatic hydrocarbons (PAHs) in air samples in Port Harcourt metropolis, Rivers State, Nigeria, evaluate their potential risks to human health and identify pollution sources by characterizing the PAHs. Sixteen polycyclic aromatic hydrocarbons were measured with a total concentration range of 0 to 9,589 mg/kg in the rainy season and 0.46 to 131mg/kg range in the dry season. High molecular weight PAHs dominated the PAH profiles accounting for 91% in dry season and 45% in the wet season. The overall assessment of the ratios of LMW to HMW of minimum, maximum and mean concentrations indicated pyrogenic sources. Benzo (a) pyrene equivalent (BaPeq) analysis showed that benzo (a) pyrene, DiBenzo (a,h) antracene and Indeno (1.2.3-cd) pyrene contributed the highest cancer toxicity with 94% and 85% in wet and dry seasons, respectively. The total incremental lifetime cancer risks of PAHs ranged from 0 to 4.90 with a median value of 3.37 x10-2 in wet season; while in the dry season, ILCR of PAHs ranged from 1.62 x10-5 to 7.42x10-3 with a median value of 1.15 x 10-3 . These values showed pervasive pollution indicating a major carcinogenic risk of PAHs. Mean ILCR in wet season was 3.37 x10-2 (33,700 x10-6 ) meaning 1 in every 30 persons in the study area is estimated to develop cancer. In the dry season, mean ILCR was 1.15 x10-3 (1,150 x10-6 ) meaning 1 in every 870 persons in the study area is estimated to develop cancer.

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