scholarly journals Heavy metals assessment in water, soil, vegetables and their associated health risks via consumption of vegetables, District Kasur, Pakistan

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Imtiaz Ashraf ◽  
Faizan Ahmad ◽  
Atif Sharif ◽  
Adnan Raza Altaf ◽  
Haipeng Teng
Keyword(s):  
Heavy Metals ◽  
Cancer Risk ◽  
Health Risk ◽  
Health Effect ◽  
Threshold Value ◽  
Average Concentration ◽  
Threshold Values ◽  
Atomic Adsorption Spectroscopy ◽  
Adults And Children ◽  
The Mean

AbstractThe consumption of contaminated vegetables has a great impact on human health. Due to this fact, we conduct the study to estimate the heavy metals in groundwater, soil, and vegetables by using the atomic adsorption spectroscopy (AAS) and find out the health risk using THQ and TCR caused by using these vegetables. The mean concentrations of As (0.015–0.40 mg/L), Cd (0.02–0.029 mg/L), Co (0.31–0.38 mg/L), Cr (1.02–1.09 mg/L), Cu (2.14–2.17 mg/L), and Hg (0.01–0.04 mg/L) are high in groundwater from threshold values given by WHO. The mean concentrations of As (22.17–23.14 mg/kg), Cd (4.21–4.54 mg/kg), Cu (21.24–24.36 mg/kg), and Pb (32.12–33.48 mg/kg) are high in soil samples from threshold values given by WHO. The mean concentrations of As, Cd, Pb, Cr, Fe, Hg, and Mn values exceeded the recommended values with concentration ranges: 1.75–4.56, 0.41–0.67, 2.12–3.12, 1.44–4.56, 87.12–135.25, 2.09–2.64, and 33.41–129.32 mg/Kg, respectively. The vegetable sample’s average concentration of heavy metals was in decreasing order cabbage ˃ brinjal ˃ okra ˃ tomato. The EDI values for As, Co, and Hg calculated for both adults and children is high. The target hazard quotients (THQ) for As, Co, and Hg are greater than the threshold value by consuming vegetables, which indicated the health risk for both adults and children. Similarly, HI due to tomato, cabbage, okra, and brinjal’s consumption is ˃ 1, with HI values 8.1975, 15.3077, 8.7312, and 10.2306, respectively. This advised the possible health effect in this area by using these vegetables. Target Cancer risk (TCR) exposed the adverse cancer risk persuaded by As, Cr, and Hg as their values exceeded the normal range by USEPA by consumption of these vegetables. This study concluded that vegetables imply the total health risk on local people, and regular monitoring of heavy metals is strongly suggested in this region.

scholarly journals Health Risk Assessment for Carcinogenic and Non-carcinogenic Heavy Metal Exposures from Pepper Fruits Cultivated In Katsina State, North West Nigeria

2019 ◽  
pp. 1-10
Author(s):  
A. I. Yaradua ◽  
A. J. Alhassan ◽  
A. Nasir ◽  
S. S. Matazu ◽  
A. Usman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Cancer Risk ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Target Hazard Quotient ◽  
Cancer Risks ◽  
Moderate Risk ◽  
Adults And Children ◽  
The Mean ◽  
Pepper Sample

This study was conducted to determine the heavy metals concentration in pepper fruits cultivated in Katsina state Nigeria. The objectives were mainly to detect the presence of heavy metals in the cultivated pepper fruits in the study area, compare the concentration of heavy metals in samples in relation to the permissible limits specified by WHO/FAO/USEPA Standards. Samples of the pepper fruits were collected in the year 2017 from the selected area. Analysis for the concentration of these heavy metals; Cr, Cd, Fe, Ni, Mn, Pb and Zn was conducted by the use of AAS (by Atomic Absorption Spectrophotometry) method. The health risks to the local inhabitants from the consumption of the samples were evaluated based on the Target Hazard Quotient. The possibility of cancer risks in the samples through intake of carcinogenic heavy metals was estimated using the Incremental Lifetime Cancer Risk. Results from this study has shown that with the exception of the mean values for the heavy metal Pb (1.200-1.333 mg/kg), the mean concentration range (mg/kg) values of Fe (0.901-0.967), Zn (0.899-0.911), Mn (0.250-0.287), Cd (0.053-0.0556) in the samples were generally lower than the USEPA, WHO/FAO maximum permissive limits. With the heavy metals Cr and Ni being below detection level (BDL) The results have indicated that the estimated daily intake (EDI) of the heavy metals were lower than the tolerable daily intake limit set by the USEPA in all the samples. Risk level of Target Hazard Quotient (THQ < 1) was observed for all the evaluated heavy metals for both adults and children. The THQ for the samples were in the decreasing order Mn>Zn>Pb>Fe>Cd, for all the pepper fruits respectively. The sequence of risk was the same for both adults and children although the children had higher THQ values in all cases. ILCR for Cd violated the threshold risk limit (>10−4) and ILCR for Pb reached the moderate risk limit (>10−3) in all the studied samples in adults, While in children ILCR for both Pb and Cd violated the risk. The sampling area trend of risk for developing cancer as a result of consuming the studied samples showed in decreasing order: Funtua senatorial zone > Daura senatorial zone> Katsina senatorial zone for both adult and children. The Cumulative cancer risk (∑ILCR) of all the studied pepper fruits reached the moderate risk limit (>10−3) in adults, while in children it is above the moderate risk limit (>10−2). Among all the studied samples, pepper sample from Funtua senatorial zone has the highest chances of cancer risks (ILCR 6.863273 × 10−3 in adults; ILCR 1.715815 × 10−2 in children) and pepper sample from Katsina senatorial zone has the lowest chances of cancer risk (ILCR 6.260100 × 10−3 in adults; ILCR 1.565025 × 10−2 in children). The study suggests that consumption of the studied pepper fruits in Katsina state is of public health concern as they may contribute to the population cancer burden.

scholarly journals Heavy Metals Speciation and Human Health Risk Assessment at an Illegal Gold Mining Site in Igun, Osun State, Nigeria

2015 ◽  
Vol 5 (8) ◽  
pp. 19-32 ◽  
Author(s):  
Olanrewaju Olusoji Olujimi ◽  
Ogheneochuko Oputu ◽  
Olalekan Fatoki ◽  
Oluwabamise Ester Opatoyinbo ◽  
Oladokun Ali Aroyewun ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Cancer Risk ◽  
Health Risk ◽  
Human Health ◽  
Health Risk Assessment ◽  
Gold Mining ◽  
Residual Fraction ◽  
Mining Site ◽  
Adults And Children

Background. There is increasing global concern over the health effects of heavy metals arising from various anthropogenic activities, especially mining. Mining activities in developing countries are often carried out at an artisanal level using a variety of extraction methods with human health and environmental consequences. Objectives. The broad objective of this study is to assess the chemical forms, distribution pattern, and health risks due to mining and processing techniques at a gold mining site in Igun, Osun State, Nigeria. Methods. Samples were collected from 28 active mine pits and sequentially extracted using standard methods. Extracts were analyzed for metals using inductively coupled plasma optical emission spectrometer (ICP/OES), while health risk was assessed using United States Environmental Protection Agency (USEPA) and Dutch methods. Chemical speciation of heavy metals and health risk assessment was calculated using mobile phase fraction summation. Results. Metals were exclusively present in the residual fractions, indicating that these metals are strongly bound to the resistant components of the soil matrix. The percentage in the residual fraction ranged from 9.41% (tin) to 99.42% (aluminium). The heavy metals geoaccumulation index for the site ranged from 0 (no contamination) to 6 (extremely contaminated). The cancer risk ranged from 6.17E-13 to 7.77E-05 and 2.73E-12 to 4.64E-04 for adults and children, respectively. Discussion. Cancer risk and non-cancer risk (hazard index) assessment showed that arsenic poses a higher risk in adults and children compared to other metals through the dermal exposure route.

scholarly journals An Integrated Approach for Source Apportionment and Health Risk Assessment of Heavy Metals in Subtropical Agricultural Soils, Eastern China

Land ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1016
Author(s):  
Ping Li ◽  
Tao Wu ◽  
Guojun Jiang ◽  
Lijie Pu ◽  
Yan Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Human Health ◽  
Health Risk Assessment ◽  
Agricultural Soil ◽  
Agricultural Soils ◽  
Adults And Children ◽  
The Mean ◽  
Industrial Sources

Unreasonable human activities may cause the accumulation of heavy metals (HMs) in the agricultural soil, which will ultimately threaten the quality of soil environment, the safety of agricultural products, and human health. Therefore, the accumulation characteristics, potential sources, and health risks of HMs in agricultural soils in China’s subtropical regions were investigated. The mean Hg, Cu, Zn, Pb, and Cd concentrations of agricultural soil in Jinhua City have exceeded the corresponding background values of Zhejiang Province, while the mean concentrations of determined 8 HMs were less than their corresponding risk-screening values for soil contamination of agricultural land in China. The spatial distribution of As, Cr, Ni, Cu, and Pb were generally distributed in large patches, and Hg, Zn, and Cd were generally sporadically distributed. A positive definite matrix factor analysis (PMF) model had better performance than an absolute principal component–multiple linear regression (APCS-MLR) model in the identification of major sources of soil HMs, as it revealed higher R2 value (0.81–0.99) and lower prediction error (−0.93–0.25%). The noncarcinogenic risks (HI) of the 8 HMs to adults and children were within the acceptable range, while the carcinogenic risk (RI) of children has exceeded the safety threshold, which needs to be addressed by relevant departments. The PMF based human health risk assessment model indicated that industrial sources contributed the highest risk to HI (32.92% and 30.47%) and RI (60.74% and 61.5%) for adults and children, followed by agricultural sources (21.34%, 29.31% and 32.94% 33.19%). Therefore, integrated environmental management should be implemented to control and reduce the accumulation of soil HMs from agricultural and industrial sources.

scholarly journals Collaborative Assessment and Health Risk of Heavy Metals in Soils and Tea Leaves in the Southwest Region of China

2021 ◽  
Vol 18 (19) ◽  
pp. 10151
Author(s):  
Juan Liu ◽  
Weihong Lu ◽  
Naiming Zhang ◽  
Dan Su ◽  
Ladu Zeer ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Health Risk ◽  
Hazard Index ◽  
Average Concentration ◽  
Geochemical Background ◽  
Threshold Values ◽  
Tea Leaves ◽  
Collaborative Assessment ◽  
Consumer Safety ◽  
Southwest Region

The collaborative assessment and health risk evaluation of heavy metals (HMs) enrichment in soils and tea leaves are crucial to guarantee consumer safety. However, in high soil HM geochemical background areas superimposed by human activities, the health risk associated with HMs in soil–tea systems is not clear. This study assessed the HMs concentration (i.e., chromium (Cr), cadmium (Cd), arsenic (As), and lead (Pb)) in tea leaves and their relationship with soil amounts in the southwest region of China to evaluate the associated health risk in adults. The results revealed that the average soil concentration of Cr was the highest (79.06 mg kg−1), followed by Pb (29.27 mg kg−1), As (14.87 mg kg−1), and Cd (0.18 mg kg−1). Approximately 0.71, 4.99, 7.36, and 10.21% of soil samples exceeded the threshold values (NY/T 853-2004) for Pb, Cr, As, and Cd, respectively. Furthermore, the average concentration of Pb, As, and Cd in tea leaves was below the corresponding residue limits, but Cr was above the allowed limits. Correlation analysis revealed that the Pb, Cr, As, and Cd amounts in tea leaves were positively correlated to their soil amounts (p < 0.01) with an R2 of 0.203 **, 0.074 **, 0.036 **, and 0.090 **, respectively. Additionally, approximately 40.38% of the samples were found to be contaminated. Furthermore, spatial distribution statistical analysis revealed that Lancang was moderately contaminated, while Yingjiang, Zhenkang, Yongde, Zhenyuan, Lüchun, Jingdong, Ximeng, and Menglian were slightly contaminated areas. The target hazard quotients (THQ; health risk assessment) of Pb, Cr, As, and Cd and the hazard index (HI) of all the counties were below unity, suggesting unlikely health risks from tea consumption.

scholarly journals Assessment of heavy metals contamination and associated risks in shallow groundwater sources from three different residential areas within Ibadan metropolis, southwest Nigeria

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Saheed Adekunle Ganiyu ◽  
Abimbola Temitope Oyadeyi ◽  
Azeem Adedeji Adeyemi
Keyword(s):  
Heavy Metals ◽  
Cancer Risk ◽  
Urban Area ◽  
Ecological Risk ◽  
Water Samples ◽  
Risk Index ◽  
Shallow Groundwater ◽  
World Health ◽  
Southwest Nigeria ◽  
The Mean

AbstractThis study has been conducted to appraise the concentrations of selected heavy metals and total dissolved solids (TDSs) in the drinking water from shallow wells in parts of Ibadan metropolis, southwest Nigeria. Fifteen (15) water samples were collected from three representative residential locations [traditional core area (TCA), peri-urban area (PUA), and urban area (UA)] for geochemical analysis. Heavy metals and TDS were analyzed with the aid of atomic absorption spectrophotometer and calibrated meter, respectively. The mean concentration (mg/L) of Zn, Pb Mn, Fe, and Cd has been 3.930, 0.658, 0.0304, 1.698, and 0.501, respectively, and as a consequence, the order of abundance of studied metals was Zn > Fe > Pb > Cd > Mn. Concentrations of Zn, Fe, Pb, and Cd were higher than recommended standards in 60%, 86.7%, 100%, and 100% of groundwater samples, respectively. However, at all points tested, the mean concentrations of Mn and TDS in water samples lie within the safe limits set by World Health Organization. The evaluation of geoaccumulation index (Igeo), enrichment factor (EF), and contamination factor suggests that representative water samples were low-to-moderate contamination. The potential ecological risk index advocates low-to-moderate ecological risk in TCA and PUA, while it demonstrated exclusive “moderate” risk in UA. Further, the range of pollution load index (PLI) (0.55–1.32) in both TCA and PUA shows nil-to-moderate pollution status, while PLI values > 1 in UA indicate moderate contaminated state. The degree of contamination in groundwater showed the following trends: UA > TCA > PUA in the study area. Moreover, the results of EF and quantification of contamination of analyzed metals in water samples indicate geogenic and anthropogenic inputs. The contribution of studied metals to the incidence of non-cancer risk via oral intake within the residential sites follows the order: cadmium > lead > zinc > iron > manganese. The hazard index as a result of ingested heavy metals for the three population classes surpasses the acceptable range in the order of infant < child < adult. Cadmium and lead made considerable impact to the estimation of cancer risk in the study area for the three human population categories. Factor analysis extracted only one component that explained 94.64% of the entire variance, while cluster analysis identified three distinct groups based on similar water quality characteristics. Based on the findings of the study, awareness programs toward protecting the shallow groundwater sources should be launched, encouraged, and sustained. Moreover, the study suggests better hygienic practices and pre-treatment of contaminated water before consumption.

scholarly journals Heavy Metals in Water and Sediment: A Case Study of Tembi River

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Saeed Shanbehzadeh ◽  
Marzieh Vahid Dastjerdi ◽  
Akbar Hassanzadeh ◽  
Toba Kiyanizadeh
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Average Concentration ◽  
Agricultural Water ◽  
Water And Sediment ◽  
The Mean ◽  
Mean Concentration ◽  
Cu And Zn ◽  
Standard Range

This study was carried out to examine heavy metals concentration in water and sediment of upstream and downstream of the entry of the sewage to the Tembi River, Iran. Samples were collected from upstream and downstream and were analyzed for Cd, Cr, Cu, Fe, Pb, Ni, and Zn by atomic absorption spectrophotometer. The results indicated that the average concentration of the metals in water and sediment on downstream was more than that of upstream. The comparison of the mean concentrations of heavy metals in water of the Tembi River with drinking water standards and those in the water used for agriculture suggests that the mean concentration of Cu and Zn lies within the standard range for drinking water and the mean concentration of Mn, Zn, and Pb lies within the standard range of agricultural water. The highest average concentration on downstream for Pb in water and for Mn in sediment was 1.95 and 820.5 ppm, respectively. Also, the lowest average concentration on upstream was identified for Cd in water and sediment 0.07 and 10 ppm, respectively. With regard to the results, it gets clear that using the water for recreational purposes, washing, and fishing is detrimental to human health and the environment.

scholarly journals Radon-222 from different sources of water and the assessment of health hazard

2016 ◽  
Vol 15 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Janet A. Ademola ◽  
Oluwaferanmi R. Ojeniran
Keyword(s):  
Annual Effective Dose ◽  
Health Hazard ◽  
Health Effect ◽  
Age Groups ◽  
Adult Child ◽  
Threshold Value ◽  
The Mean ◽  
Different Sources ◽  
Radon In Water ◽  
Radon Concentrations

Water samples collected from different sources were analysed for radon concentrations in order to evaluate the health effect associated with radon in water. The radon concentrations were in the range of 3.56–98.57, 0.88–25.49, 0.73–1.35 and 0.24–1.03 Bq.L−1 for borehole, well, packaged and utility water, respectively. Samples from boreholes had the highest radon concentrations with about 67% being higher than the threshold value of 11.1 Bq.L−1 recommended by the USEPA. The mean annual effective dose (AED) due to ingestion for adult, child and infant ranged from 8.71 × 10−3 to 0.831 mSv.y−1 for the different sources. The mean AED calculated for consuming water from boreholes and wells for the three age groups were higher than the recommended reference dose level of 0.1 mSv.y−1. The mean AED due to inhalation of radon in drinking water was negligible, ranging from 0.13 to 6.20 μSv.y−1. The health burden associated with radon in water in the study is through ingestion of water directly from boreholes.

X-ray fluorescence spectrometric determination of heavy metals in selected rice samples sold on the Liberian market: a case study conducted in Paynesville City, Greater Monrovia

2020 ◽  
Vol 9 (3) ◽  
pp. 1
Author(s):  
McClain James ◽  
PAYE Plenseh Diana ◽  
N’debewillie Kokolo ◽  
CHEA Sampson K. P. ◽  
Kiazolu J. Boima
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Cancer Risk ◽  
Hazard Index ◽  
Rice Sample ◽  
X Ray ◽  
Total Cancer Risk ◽  
Total Cancer ◽  
Rice Consumption ◽  
The Mean

Background: Environmental pollution with toxic heavy metals can be lead to the possible contamination of rice. Rice is a staple food widely consumed in the urban and rural parts of Liberia daily. Rice is cultivated in approximately 113 countries and a fundamental source for energy and protein. Objective: The study assesses selected heavy metals (As, Pb, Cd, Se, and Cr) concentration in selected imported rice and traditionally grown rice and bulgur wheat in Liberia. Methods: Six grade of imported rice, Bulgar wheat, and traditionally grown rice were purchased from the Duport Road and Red-Light markets in Greater Monrovia and analyze using X-ray Fluorescence Spectrometer. All data were analyzed using XLSTAT, and data was used to calculate the risk factor of each rice sample. Results: The mean concentration of heavy metal found in the rice as follow: As, 1.31ppm; Cd, 9.42ppm; Cr. 12.3ppm; Se, 5.73ppm; and Pb, 1.75ppm. The estimated daily intakes (EDIs) were calculated in combination with the rice consumption data. The mean intakes of As, Cd, Cr, Se, and Pb through rice were estimated to be 1.32, 9.42. 12.4. 5.74, and 1.75 mg/kg BW/day. Chromium has the average estimated daily intake. The combined hazard index for the heavy metals in each sample and the total cancer risk for each sample contributed most significantly to a cancer risk of rice consumption during adult life expectancy.Conclusion: The selected heavy metal concentration from the rice sample was above the FAO/WHO reference Standard but was within the range of the contaminant level except for chromium, which is above the accepted range. However, the hazard index and the total cancer risk indicate a potential non-carcinogenic and carcinogenic risk.  

Risk Assessment of Heavy Metal Pollution by Three Plants at Zihu River in Nanjing, China

2014 ◽  
Vol 535 ◽  
pp. 403-408 ◽  
Author(s):  
Yu Shen ◽  
Qin Chen ◽  
Kai Mei Zhang ◽  
Yan Ming Fang
Keyword(s):  
Heavy Metals ◽  
Industrial Wastewater ◽  
Potential Role ◽  
Rhizosphere Soil ◽  
Correlation Coefficients ◽  
Average Concentration ◽  
Threshold Values ◽  
Water And Sediment ◽  
Upper Limits ◽  
Positive Correlations

Abstract. The concentrations of heavy metals (As, Cr, Cd, Cu, Zn, Mn, Ni and Pb) were measured in the water, sediment, and three common plants (Rorippa indica,Rumex acetosaandOrychophragmus violaceus) from Nanjing Forestry University reach of Zihu River, China. Results showed that the toxic threshold values exceeded the upper limits for Cd and Mn in water. In the same way, toxic threshold values exceeded the limitation for As, Cd, Cu, Ni, Pb and Zn in sediment. Overproof Cd, Cu, Mn, Ni, Pb and Zn were also found in rhizosphere soil. Average concentration of Zn was higher in sediment, followed by Mn in both water and rhizosphere soil. It was found that heavy metals (Cd, Cu, Ni, Pb, As and Zn) in water may be mainly derived from metal processing, electroplating industries, industrial wastewater, and domestic sewage. Positive correlation was observed between As and Cu, As and Ni, Cr and Pb, Cu and Ni, Pb and Zn in water. Moreover, significant positive correlations between Ni and As were observed. Preliminary judgment showed that sediment has a depuration effect on As, Cu, Ni, Cr, Pb and Zn in water, according to correlation coefficients of water and sediment. Comparing the relations between sediment and rhizosphere soil, Cr, Cu, Ni, Pb and Zn in the rhizosphere soil were mainly from the sediment, and Mn was mainly from water. Three plants played active roles on enrichment of As, Cr, Cu, Mn, Ni, Pb and Zn, particularly, Zn and Mn can be accumulated to higher concentration in these three plants. As content in rhizosphere soil was found to be lower than sediment, indicating As was most absorbed by the plants. Thus, three plants were playing a potential role in environment inductors.

scholarly journals Human Health Risk Assessment of Heavy Metals in Onion Bulbs Cultivated in Katsina State, North West Nigeria

2020 ◽  
pp. 30-39
Author(s):  
A.I. Yaradua ◽  
A. J. Alhassan ◽  
A. Nasir ◽  
S. S. Matazu ◽  
A. Usman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Cancer Risk ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Human Health Risk ◽  
Hazard Index ◽  
The United States ◽  
Potential Health ◽  
North West

Vegetable fields in Katsina State are increasingly being loaded with heavy metals through various pollution sources such as agricultural activities mining and traffic. Onion bulb samples from the three senatorial zones that constitute to make up Katsina state in the North West of Nigeria were collected and the concentrations of seven heavy metals (Pb, Cd, Cr, Fe, Zn, Mn and Ni) in all the samples were determined by atomic absorption spectrometry. The health risk assessment methods developed by the United States Environmental Protection Agency (US EPA) were employed to explore the potential health hazards of heavy metals in the samples on the children and adult population. The highest mean concentration (mg/kg) was observed for Fe, followed by Pb, Zn and Mn. While Cd has the lowest concentration with the heavy metals Cr and Ni being below detection level (BDL). Overall hazard index (Hi) for the heavy metals were within the safety limit. The overall cancer risk to the adults based on pseudo-total metal concentrations exceeded the target value, mainly contributed by Pb.  Mn and Zn were the primary heavy metals posing non-cancer risks while Pb caused the greatest cancer risk. It was concluded that consumption of the onion samples from Katsina State may contribute to the population cancer burden.

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