scholarly journals Source Apportionment, Ecological And Human Health Risks of Toxic Metals In Road Dust of Densely Populated Capital And Connected Major Highway of Bangladesh

2021 ◽  
Author(s):  
Md. Morshedul Haque ◽  
Sajin Sultana ◽  
Nahin Mostofa Niloy ◽  
Shamshad B. Quraishi ◽  
Shafi M. Tareq
Keyword(s):  
Human Health ◽  
Source Apportionment ◽  
Health Risks ◽  
Ecological Risk ◽  
Toxic Metals ◽  
Risk Index ◽  
Road Dust ◽  
Potential Ecological Risk ◽  
Human Health Risks ◽  
Major Highway

Abstract This study investigates pollution levels, source apportionment, ecological and human health risks associated with toxic metals (Pb, As, Hg, Cr, and Cd) in road dust from the most populated Dhaka city and a connected major highway in Bangladesh. The mean concentration of Pb, Hg, and Cd were 1.3, 29.3, and 13.2 times higher than their corresponding background values with spatially uneven distribution all over the study area. Metal pollution indices, the geo-accumulation index (Igeo), NIPI, PI, indicated extreme contamination at many sites depending on local environmental factors. The potential ecological risk (\({\text{E}}_{\text{r}}^{\text{i}})\) revealed that 84% and 54% of samples showed the extreme ecological risk for Hg and Cd pollution, respectively. On the other hand, the potential ecological risk index (PERI) and nemerow integrated risk index (NIRI) showed that most sampling sites suffered high to extreme ecological risk. Source apportionment using positive matrix factorization (PMF) identified coal combustion and gasoline (50.14%), traffic exhaust (35.26%), and industrial and agriculture activity (14.60%) were the main source of toxic metals of the study area. Non-carcinogenic health risk indicated that adults are more vulnerable than children, and hazard index (HI) of Hg for both age groups and Cd for adults were significantly higher than the safe level. The carcinogenic risk (CR) levels of toxic metals were acceptable (10− 6 to 10− 4), although the maximum limit of Cr for children and As for adults was close to the unacceptable limit (10− 4). Continual exposure to toxic metals through road dust might develop lifetime cancer risk in local inhabitants.

scholarly journals Human Health Risk and Bioaccessibility of Toxic Metals in Topsoils from Gbani Mining Community in Ghana

2019 ◽  
Vol 9 (22) ◽  
Author(s):  
Godfred Darko ◽  
Kwadwo Owusu Boakye ◽  
Marian Asantewaa Nkansah ◽  
Opoku Gyamfi ◽  
Eugene Ansah ◽  
...  
Keyword(s):  
Human Health ◽  
Health Risks ◽  
Ecological Risk ◽  
Toxic Metals ◽  
Risk Index ◽  
Hazard Index ◽  
Human Health Risks ◽  
Mining Community ◽  
In Vitro Bioaccessibility

Background. Anthropogenic activities such as artisanal mining pose a major environmental health concern due to the potential for discharge of toxic metals into the environment. Objectives. To determine the distribution and pollution patterns of arsenic (As), iron (Fe), nickel (Ni), cobalt (Co), chromium (Cr), manganese (Mn), copper (Cu) and zinc (Zn) in the topsoil of a mining community in Ghana, along with potential human health risks and in vitro bioaccessibility. Methods. Concentrations of metals were determined using X-ray fluorescence techniques and validated using inductively coupled plasma-mass spectrometry. Results. Concentrations of the metals in topsoil were in the order of magnitude of Cu (31.38 mg/kg) < Ni (45.39 mg/kg) < As (59.66 mg/kg) < Cr (92.87 mg/kg) < Zn (106.98 mg/kg) < Mn (1195.49 mg/kg) < Fe (30061.02 mg/kg). Geo-statistical and multivariate analyses based on hazard indices including contamination, ecological risks, geo-accumulation, and pollution load suggest that the topsoils are contaminated in the study area. The potential ecological risk index (PERI) showed high ecological risk effects (PERI=269.09), whereas the hazard index (1×10−7) and carcinogenic risk index (1×10−5) indicated low human health risks. Elevated levels of As, Cr, Ni, and Zn were found to emanate from anthropogenic origins, whereas Fe, Mn, and Cu levels were attributed mainly to geological and atmospheric depositions. Physicochemical parameters (pH, electrical conductivity and total organic carbon) showed weak positive correlations to the metal concentrations. Elemental bioaccessibility was variable, decreasing in the order of Mn (35± 2.9%) > Cu (29± 2.6%) > Ni (22± 1.3%) > As (9± 0.5%) > Cr (4± 0.6%) > Fe (2± 0.4%). Conclusions. Incorporation of in-vitro bioaccessibility into the risk characterization models resulted in a hazard index of less than 1, implying low human health risks. However, due to accumulation effects of the metals, regular monitoring is required. Competing Interests. The authors declare no competing financial interests.

scholarly journals Distribution, Ecological Risk Assessment, and Bioavailability of Cadmium in Soil from Nansha, Pearl River Delta, China

2019 ◽  
Vol 16 (19) ◽  
pp. 3637 ◽  
Author(s):  
Fangting Wang ◽  
Changsheng Huang ◽  
Zhihua Chen ◽  
Ke Bao
Keyword(s):  
Spatial Distribution ◽  
Human Health ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Health Examination ◽  
Quaternary Sediments ◽  
Deep Soil ◽  
Accumulation Index ◽  
The Impact

Background: Cadmium (Cd) pollution poses a threat to human health. Examination of the spatial distribution of Cd in soils can be used to assess the risks posed to humans and the environment. Objective: This study determined the enrichment rules and factors influencing Cd pollution in Nansha, and evaluated the pollution characteristics and bioavailability of Cd in quaternary sediments through 7 deep soil profiles (0–200 cm), 4 boreholes, and 348 topsoil (0–20 cm) samples. Methods: The geo-accumulation index (Igeo) and the potential ecological risk index (Er) were used to assess ecological risk, and bioavailability was determined using multivariate, spatial distribution, and correlation matrix analyses. Results: From the Er, 52% of Nansha was classed as being at very high risk of Cd pollution; a further 36% was classed as dangerous. Cadmium was more abundant in clay soils than in sandy soils. Bioavailable Cd in quaternary sediments was significantly affected by the total Cd, and labile Cd accounted for more than half of the total Cd. Changes in pH mainly affected bioavailable Cd rather than total Cd, affecting the overall bioavailability of Cd. Conclusions: Nansha soils are commonly and seriously contaminated with Cd. An appropriate remediation treatment approach should be used to reduce Cd bioavailability. Furthermore, planting structures in farmland should be adjusted to avoid the impact of heavy metals on human health.

Human Health Risks Associated with Metals from Urban Soil and Road Dust in an Oilfield Area of Southeastern Algeria

2015 ◽  
Vol 70 (3) ◽  
pp. 556-571 ◽  
Author(s):  
Mohammed Lamine Benhaddya ◽  
Abdelaziz Boukhelkhal ◽  
Youcef Halis ◽  
Mohammed Hadjel
Keyword(s):  
Human Health ◽  
Health Risks ◽  
Urban Soil ◽  
Road Dust ◽  
Human Health Risks

scholarly journals Assessment of Pollution and Health Risks of Heavy Metals in Particulate Matter and Road Dust Along the Road Network of Dhanbad, India

2021 ◽  
Vol 11 (29) ◽  
Author(s):  
Shweta Kumari ◽  
Manish Kumar Jain ◽  
Suresh Pandian Elumalai
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Heavy Metal ◽  
Particulate Matter ◽  
Health Risk ◽  
Human Health ◽  
Source Apportionment ◽  
Health Risks ◽  
Mass Concentration ◽  
Road Dust

Background. The rise in particulate matter (PM) concentrations is a serious problem for the environment. Heavy metals associated with PM10, PM2.5, and road dust adversely affect human health. Different methods have been used to assess heavy metal contamination in PM10, PM2.5, and road dust and source apportionment of these heavy metals. These assessment tools utilize pollution indices and health risk assessment models. Objectives. The present study evaluates the total mass and average concentrations of heavy metals in PM10, PM2.5, and road dust along selected road networks in Dhanbad, India, analyzes the source apportionment of heavy metals, and assesses associated human health risks. Methods. A total of 112 PM samples and 21 road dust samples were collected from six stations and one background site in Dhanbad, India from December 2015 to February 2016, and were analyzed for heavy metals (iron (Fe), lead (Pb), cadmium (Cd), nickel (Ni), copper (Cu), chromium (Cr), and zinc (Zn)) using atomic absorption spectrophotometry. Source apportionment was determined using principal component analysis. A health risk assessment of heavy metal concentrations in PM10, PM2.5, and road dust was also performed. Results. The average mass concentration was found to be 229.54±118.40 μg m−3 for PM10 and 129.73 ±61.74 μg m−3 for PM2.5. The average concentration of heavy metals was found to be higher in PM2.5 than PM10. The pollution load index value of PM10 and PM2.5 road dust was found to be in the deteriorating category. Vehicles were the major source of pollution. The non-carcinogenic effects on children and adults were found to be within acceptable limits. The heavy metals present in PM and road dust posed a health risk in the order of road dust> PM10> and PM2.5. Particulate matter posed higher health risks than road dust due to particle size. Conclusions. The mass concentration analysis indicates serious PM10 and PM2.5 contamination in the study area. Vehicle traffic was the major source of heavy metals in PM10, PM2.5, and road dust. In terms of non-carcinogenic risks posed by heavy metals in the present study, children were more affected than adults. The carcinogenic risk posed by the heavy metals was negligible. Competing Interests. The authors declare no competing financial interests

Pollution characteristics and human health risks of potentially (eco)toxic elements (PTEs) in road dust from metropolitan area of Hefei, China

Chemosphere ◽  
2017 ◽  
Vol 181 ◽  
pp. 111-121 ◽  
Author(s):  
Muhammad Ubaid Ali ◽  
Guijian Liu ◽  
Balal Yousaf ◽  
Qumber Abbas ◽  
Habib Ullah ◽  
...  
Keyword(s):  
Human Health ◽  
Health Risks ◽  
Metropolitan Area ◽  
Toxic Elements ◽  
Road Dust ◽  
Pollution Characteristics ◽  
Human Health Risks
Sign in / Sign up

Export Citation Format

Share Document