scholarly journals Farmlands Degradation with Intensive Agricultural Practices and Human Health Risk Assessment: A Case Study of Province Punjab, Pakistan

Author(s):  
Javed Nawab ◽  
Sardar Khan ◽  
Zia Din ◽  
Shah Faisal ◽  
Abid Ali ◽  
...  

Farmlands contamination with heavy metals (HMs) can be considered as a global issue especially in developing countries. The current study investigates the various pollution indices, potential ecological risk index (PERI) and human health risk caused by HMs in some selected regions of Punjab Province, Pakistan. Farmlands soil samples were collected, acid extracted and analyzed via ICP-MS (Agilent 7500c) for selected HMs. All the HMs were found within permissible limits set by worldwide regulatory authorities except Cd which exceeded its limit in 68% agricultural soils of the study area. The CF values for Cd showed high (CF≥6) degree of contamination to considerable contamination (3≤CF≤6). The CD values indicated low (CD≤6) contamination to moderate (6dermal>inhalation. Furthermore, the RI values were observed higher than 1.0×10–4 for Cd (Lahore and Faisalabad regions) and Cr (Multan and Faisalabad regions) in children working in farmlands and likely exposed to high cancer risk. So, minimization of pollutants must be the top priority of the state to reduce contaminants inputs and immobilization in soil through environmental protection laws and regulations

2021 ◽  
pp. 101913
Author(s):  
Md. Solaiman Hossain ◽  
M. Belal Hossain ◽  
Md. Refat Jahan Rakib ◽  
Y.N. Jolly ◽  
Md. Akram Ullah ◽  
...  

Author(s):  
Nnamdi M. Ahiamadu ◽  
Ify L. Nwaogazie ◽  
Yussuf O. L. Momoh

This study was carried out to assess the human health risk associated with a crude oil spill site in Emohua Local Government Area of Rivers State,  Niger Delta. The Total Content and Fraction’s approaches were adopted to assess the human health risk. Total Content approach was carried out by comparing the concentration of various contaminants in the environmental media studied with the Intervention Values prescribed while the Fractions approach was carried out using RBCA Toolkit for Chemical Releases version 2.6. The results indicate that concentration indices for Total Petroleum Hydrocarbon (TPH) and Polycyclic Aromatic Hydrocarbon (PAH) were greater than the acceptable limit of 1.0 for both the maximum and mean concentrations in soil and groundwater, indicating unacceptable risk at this site. The result from the Fraction’s approach showed that carcinogenic risks are identified for the site through the soil and grounwater exposure pathways as the Total Risk Values for soil (1.7 x10-3) and groundwater (5.6 x 10-1) are higher than the target risk of 1.0 x 10-5 while toxic effects risks are identified for all pathways in the site with Total Health Risk Index for all four pathways greater than the applicable limit of 1.0. Ingestion of groundwater for carcinogenic risk with risk value 5.6 x 10-1 and inhalation of indoor air for non-carcinogenic risk Health Risk Index of 1.0 x104 are identified as the major contributing exposure pathways at this study site. It was therefore concluded that the study site poses unacceptable risk to human health and needs immediate intervention.


Author(s):  
Doležalová Weissmannová ◽  
Mihočová ◽  
Chovanec ◽  
Pavlovský

The heavy metal pollution of soils has become serious environmental problem, mainly in localities with high industrialization and rapid growth. The purpose of this detailed research was to determine the actual status of heavy metal pollution of soils and an assessment of heavy metal pollution in a highly industrialized city, Ostrava, with a history of long-term impacts from the metallurgy industry and mining. The ecological risks to the area was subsequently also assessed. The heavy metals Cd, Hg, Cu, Mn, Pb, V, Zn, Cr and Fe were determined in top-soils (0–20 cm) using atomic absorption spectrometry (F AAS, GF AAS) from three areas with different anthropogenic loads. The obtained data expressed as mean metal concentrations were very varied among the sampled soils and values of all analyzed metal concentrations were higher than its background levels. To identify the ecological risk and assessment of soil pollution, various pollution indices were calculated, such as single pollution indices (Igeo, CF, EF, PI) and total complex indices (IPI, PLI, PINemerow, Cdeg, mCdeg, Er and PERI). The identification of pollution sources was assessed using Pearson’s correlation analysis and multivariate methods (HCA, PCA/FA). The obtained results confirmed three major groups of metals (Fe–Cr, Pb–Cu and Mn–V). A human health risk was identified in the case of Pb, Cd and Cr, and the HI value of V for children also exceeded 1.


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