Browsing by Author "Bayraktar, E.P."

Now showing 1 - 3 of 3

Ecological and Health Risk Assessment in Road Dust Samples from Various Land Use of Düzce City Center: Towards the Sustainable Urban Development
(2024.01.01) Isinkaralar, K.; Isinkaralar, O.; Bayraktar, E.P.
Urban environmental risks are related to dynamic and long-term cross-processes arising from complex interconnected relationships. Although they have various sources, trace metals' ability to accumulate is relatively high compared to other pollutants. Therefore, for this reason, heavy metals can be found in high amounts in cities, especially in road dust. The targets of the present study are to appoint the levels and sources of trace metals in road dust samples collected from eleven areas in the D & uuml;zce city center. Because of their potential health risks, the five heavy metals (Cd, Cr, Cu, Ni, and Pb) are the most commonly studied pollutants. The inhalation of them through the mouth and nose is almost negligible; however, ingestion is a higher potential health risk for children. The hazard index (HI) and geoaccumulation index (I-geo) are powerful tools used to assess the level of risk. Factors governing possible contamination mean values were evaluated in the following order: Pb (56.07 mg/kg) > Cu (43.45 mg/kg) > Ni (30.05 mg/kg) > Cr (26.58 mg/kg) > Cd (4.33 mg/kg). The noncarcinogenic risks of Pb poses are relatively higher than those posed by the other four metals for both children and adults. However, HI values of Cd, Pb, and Ni in children were 1.25-1.61, 2.93-3.74, and 1.00-1.14; Cd is 1.05-2.56. The HI values for children are relatively higher than for adults. This paper provides the most significant contribution to road dust is atmospheric deposition by industrial activities and traffic density. Regarding Pb, while I-geo is 0.66 in park areas and 0.61 in forest areas, it reaches 0.96 on highways. While Ni is calculated for I-geo as 0.52 in forest area, it gets 0.97 in industrial factory surroundings. The findings reveal the multidimensional results of land use policies regarding sustainable urban development. The stochastic model obtained is vital, especially in disadvantaged groups.
Ecological and Health Risk Assessment in Road Dust Samples from Various Land Use of Düzce City Center: Towards the Sustainable Urban Development
(Institute for Ionics, 2024) Isinkaralar, K.; Isinkaralar, O.; Bayraktar, E.P.
Urban environmental risks are related to dynamic and long-term cross-processes arising from complex interconnected relationships. Although they have various sources, trace metals’ ability to accumulate is relatively high compared to other pollutants. Therefore, for this reason, heavy metals can be found in high amounts in cities, especially in road dust. The targets of the present study are to appoint the levels and sources of trace metals in road dust samples collected from eleven areas in the Düzce city center. Because of their potential health risks, the five heavy metals (Cd, Cr, Cu, Ni, and Pb) are the most commonly studied pollutants. The inhalation of them through the mouth and nose is almost negligible; however, ingestion is a higher potential health risk for children. The hazard index (HI) and geoaccumulation index (I geo) are powerful tools used to assess the level of risk. Factors governing possible contamination mean values were evaluated in the following order: Pb (56.07 mg/kg) > Cu (43.45 mg/kg) > Ni (30.05 mg/kg) > Cr (26.58 mg/kg) > Cd (4.33 mg/kg). The noncarcinogenic risks of Pb poses are relatively higher than those posed by the other four metals for both children and adults. However, HI values of Cd, Pb, and Ni in children were 1.25–1.61, 2.93–3.74, and 1.00–1.14; Cd is 1.05–2.56. The HI values for children are relatively higher than for adults. This paper provides the most significant contribution to road dust is atmospheric deposition by industrial activities and traffic density. Regarding Pb, while I geo is 0.66 in park areas and 0.61 in forest areas, it reaches 0.96 on highways. While Ni is calculated for I geo as 0.52 in forest area, it gets 0.97 in industrial factory surroundings. The findings reveal the multidimensional results of land use policies regarding sustainable urban development. The stochastic model obtained is vital, especially in disadvantaged groups.
Monitoring the spatial distribution pattern according to urban land use and health risk assessment on potential toxic metal contamination via street dust in Ankara, Turkiye
(2023.01.01) Isinkaralar, O.; Isinkaralar, K.; Bayraktar, E.P.
The urbanization processes with growing vehicle numbers cause heavy metal pollution in street dust, and high populations in metropolitan cities are exposed to pollutants. This paper aims to monitor the spatial distribution of heavy metals and evaluate the concentrations via health risk assessment of HMs (Cu, Ni, Cd, Co, Pb, and Zn) that expose the inhabitants to health hazards. According to the results of the current study, sixty street dust samples were applied to the acid digestion technique and quantification by inductively coupled plasma-mass spectrometry (ICP-MS). The spatial distribution of the selected heavy metals in the street dust was investigated using the spatial analysis tool in ArcGIS 10.0 according to population density and land use. In the present study, we used hazard index and cancer risk methods to estimate the public health risk of the pollutants exposed to street dust in Ankara. The concentrations range of the elements in street dust over the study area ranged from 3.34-4.50, 31.69-42.87, 16.09-21.54, 42.85-57.55, 0.00-3.51, and 23.03-30.79, respectively. The overall decreasing order of mean concentration of metals was observed as follows: Pb > Cu > Ni > Co > Cd > Zn. Vehicle traffic and industrial activities seem to be the most critical anthropogenic sources responsible for dust pollution in the study area. The risk assessment of Pb and Ni exposure was the highest, and the hazard index values were 2.42E + 00 and 2.28E + 00 mg/kg/day for children. However, the effect on adults was 2.62E-01 and 2.37E-02 mg/kg/day, followed by inhalation and dermal contact with street dust was almost negligible. The decreasing concentration is modeled spatially along the western development corridor of the city. The risk to public health is high in areas with high densities close to the city center and the main artery.