scholarly journals Ecological Risk Index and Their Associated Health Risk Evaluation of Toxic Heavy Metals in Cultivated Vegetable and Cereal in Different Peri-Urban Regions of an Indian Metropolitan City, Lucknow

2021 ◽  
Author(s):  
Pradeep Kumar ◽  
Dipti Rawat ◽  
Sunil Kumar ◽  
Rana Pratap Singh
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Irrigation Water ◽  
Agricultural Soil ◽  
Risk Index ◽  
Carcinogenic Risk ◽  
Toxic Heavy Metals ◽  
Ecological Risk Index ◽  
Urban Regions ◽  
Risk Potential

Abstract The present study investigates the phytoaccumulation factor (PF), Ecological risk index (ERI), and carcinogenic risk factor (CRs) of toxic heavy metals (THMs) i.e. As, Cd, Cr, Pb, and Ni in the agricultural soil, irrigation water, vegetables and cereals samples collected from peri-urban regions of Lucknow. The level of these metals was within the maximum allowable concentration (MAC) (FAO/WHO 2011) in agricultural soil while it was higher in irrigation water. The phytoaccumulation factor of Cd and Ni was very high in the edible parts of vegetable and cereal samples which show that they might have entered through metal-contaminated irrigation water even if not available in the soil. The contamination coefficient (ifC) and Ecological risk factor (ifE) of metals was detected in the range of low risk in all agricultural soil, whereas Ecological risk index of metals was found in the moderate risk which indicated a mild impact on the agro-ecosystem. The carcinogenic risk potential of metals was found more than the requisite value of 10-4 in tomato, spinach, and wheat samples. This study indicates that the metals possess a moderate ecological risk and high carcinogenic risk potential through the consumption of metal-contaminated vegetables and cereals grown and sold in peri-urban regions and food markets.

scholarly journals Potential Ecological Risks of Heavy Metals in Agricultural Soil Alongside Highways and Their Relationship with Landscape

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 800
Author(s):  
Cong Xu ◽  
Jie Pu ◽  
Bo Wen ◽  
Min Xia
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Human Activities ◽  
Agricultural Soil ◽  
Risk Index ◽  
Pollution Index ◽  
Potential Ecological Risk ◽  
Ecological Risks ◽  
Ecological Risk Index

The agricultural soil alongside highways has experienced multiple potential ecological risks from human activities. In this study, 100 soil samples near the highways were collected in Lishui District, Nanjing City. Using the single-factor pollution index, the Nemerow comprehensive pollution index, and the potential ecological risk index, the study investigated the heavy metal contents and distribution in roadside agricultural soil. PCA and a multiple regression model were applied to quantitatively analyze the spatial relationships between sampling soil heavy metal accumulation and the surrounding man-made landscape. The mean contents of Cu and Pb exceeded the background, while Cd, Cr, and Zn were lower than that. The potential ecological risk index exhibited a very low ecological hazard and only Cr in soils rarely showed moderate risk. Furthermore, quantitative analysis for the sources of contamination revealed that agricultural practices were the dominant contributors to the heavy metals, including Cd, Cu, and Zn, while road and heavy industrial practices contributed to Cr and Pb. The study provides sources of heavy metal pollution from human activities in roadside agricultural land and serves as a reference for ecological restoration.

scholarly journals Comparison of the Ecological Risk Index of Heavy Metals in the North of Persian Gulf: Hormozgan and Bushehr Provinces

2017 ◽  
Vol 8 (30) ◽  
pp. 37-45
Author(s):  
Mehri Rezaei ◽  
Ali Mehdinia ◽  
Abolfazl Saleh ◽  
Soroush Modabberi
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Persian Gulf ◽  
Risk Index ◽  
Ecological Risk Index ◽  
The North

Distribution and Contamination Acessment of Heavy Metals in Sediments of Harbin Section of Songhua River, China

2014 ◽  
Vol 955-959 ◽  
pp. 2280-2284
Author(s):  
Kai Yue Gong ◽  
Pei Shi Qi ◽  
Yun Zhi Liu
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Risk Level ◽  
Index Method ◽  
Songhua River ◽  
Ecological Risk Index ◽  
Risk Levels ◽  
Accumulation Index

In this study, the distribution and enrichment characters of heavy metals were explored. And the potential ecological risk levels of heavy metals were evaluated by geo-accumulation index method and potential ecological risk index method. The concentrations of heavy metals in sediments of Harbin section of Songhua River are: Zn>Pb>Cr>Cu>Ni>Cd. The enrichment degree of Zn is the highest, while Cd is the lowest. The potential ecological risk indexes of heavy metals in the sediments of section of Songhua River in Harbin are: Cd>Pb>Cu>Zn>Ni>Cr. The main heavy metals pollution is Cd, which has low content but considerable potential ecological risk and contributes most to RI. The ecological risk level of heavy metals in the sediments of the section of Songhua River in Harbin is moderate.

scholarly journals Heavy metal contamination and ecological risk assessment of the agricultural soil in Shanxi Province, China

2020 ◽  
Vol 7 (10) ◽  
pp. 200538
Author(s):  
Hongxue Qi ◽  
Bingqing Zhao ◽  
Lihong Li ◽  
Xiuling Chen ◽  
Jing An ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Inductively Coupled Plasma ◽  
Agricultural Soil ◽  
Heavy Metal Contamination ◽  
Microwave Digestion ◽  
Risk Index ◽  
Shanxi Province ◽  
Ecological Risks ◽  
Geo Accumulation

To assess contamination levels and ecological risks of heavy metals in agricultural soil from Shanxi Province of China, a total of 33 samples in the surface soil were collected from 11 cities in Shanxi. The soil samples were digested by a mixed acid of nitric acid and hydrofluoric acid on a microwave digestion system, then the levels of eight heavy metals were analysed using an inductively coupled plasma mass spectrometer. The pollution levels of soil heavy metals were evaluated using a geo-accumulation index and their ecological risks were assessed using risk index calculated by Hakanson's method. As a result, the average concentrations of the heavy metals As, Cd, Cr, Cu, Hg, Ni, Pb and Zn were 12.9 ± 4.8, 0.35 ± 0.23, 43 ± 14, 27 ± 19, 0.25 ± 0.14, 21.7 ± 5.7, 17 ± 13 and 89 ± 53 mg kg −1 , respectively. By comparison to the Chinese soil environmental quality (GB15618-2018), only 9% of Cd samples and 3% of Cu samples exceeded their corresponding screening criteria. Subsequently, the results of geo-accumulation indices suggested that Shanxi's soil suffered from moderate to heavy contamination posed by Cd and Hg, and risk indices exhibited a similar trend that Cd and Hg were the main contributors for considerable to very high ecological risk. Finally, the analysis of variance indicated that the mean levels of Cd significantly occurred at Yuncheng areas among the 11 cities ( n = 3, p < 0.05), but Hg concentrations did not have significantly statistical differences. This study demonstrated that metals Cd and Hg had higher levels and ecological risks for agricultural soil in Shanxi, especially, Yuncheng City suffered from heavy Cd contamination. The findings of the present study will provide basic information on management and control of the agricultural soil contamination in Shanxi Province, China.

Heavy metals (lead, cadmium and zinc) from street dust in Monterrey, Mexico: ecological risk index

2020 ◽  
Vol 17 (6) ◽  
pp. 3231-3240 ◽  
Author(s):  
D. Castillo-Nava ◽  
M. Elias-Santos ◽  
U. J. López-Chuken ◽  
A. Valdés-González ◽  
L. G. de la Riva-Solís ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Risk Index ◽  
Street Dust ◽  
Ecological Risk Index

scholarly journals Ecological risk of heavy metal in agricultural soil and transfer to rice grains

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Upoma Mahmud ◽  
Md. Tareq Bin Salam ◽  
Abu Shamim Khan ◽  
Md. Mizanur Rahman
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Transfer Factor ◽  
Agricultural Soil ◽  
Risk Index ◽  
Reference Value ◽  
The Body ◽  
Rice Grain ◽  
Soil Extracts

AbstractHigher accumulation of heavy metals in food grains is one of the leading problems for carcinogenic effects in the body. That’s why; scientists have taken this problem as a potential indicator for ensuring safe food. The present study was carried out to assess the ecological risk of heavy metals such as nickel, copper, arsenic, lead, and manganese in agricultural soil and transfer status to rice grain. Soil samples were collected from four agricultural fields at different times in the Dumuria Upazila under Khulna district in Bangladesh. Heavy metal concentration in soil extracts, irrigation water samples, and grain samples was determined by Atomic Absorption Spectrometer. Average metal concentrations in soil were calculated and compared with the reference value in soil. In most cases, heavy metals in agricultural soil (Ni: 61.73–94.52 mg/kg; Cu: 23.33–37.5 mg/kg; As: 7.53–19.63 mg/kg; Pb: 15.17–29.19 mg/kg; Mn: 322.98–478.45 mg/kg) were greater than the reference soil (Ni: 13.08–24.55 mg/kg; Cu: 10.35–13.28 mg/kg; As: 1.87–4.61 mg/kg; Pb: 4.88–8.27 mg/kg; Mn: 52.17–74.3 mg/kg). Overall risk index stated that the examined soils were at moderate risk of contamination. Transfer Factor of arsenic (0.018–0.032 mg/kg) and manganese (0.059–0.155 mg/kg) was higher from soil to rice grain. On the other hand, transfer factor of lead was found negligible that is a good sign of improvement. The findings of the study will be good documentation for planning, risk assessment, and decision-making by environmental managers in this region.

Evaluation of Ecological Risk on Soil Heavy Metals Pollution of Qingyuan

2012 ◽  
Vol 610-613 ◽  
pp. 928-931 ◽  
Author(s):  
Hui Min Zhang ◽  
Hui Zhang ◽  
Ai Min Song ◽  
Jian Qiao Qin ◽  
Ming Wei Song
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Average Concentration ◽  
Single Element ◽  
Index Method ◽  
Ecological Risk Index ◽  
Heavy Metals Pollution

This paper was seleced Qingyuan as a case study, in order to analyze Hg, As, Cu, Zn, Pb, Cd, Ni, Cr concentrations of the soil samples. And used the Hakanson potential ecological risk index method to assess the potential ecological risks of concentrations of heavy metals in soil. The results shows that the average concentration of Hg, As, Cu, Zn, Pb, Cd, Ni, Cr in soil is 6.45, 0.26, 20.25, 119.11, 181.67, 189.22, 0.27, 32.92, 201.35 mg•kg-1 respectively. The rank by severity of ecological risk as Hg > Cu > Pb > As > Cr > Cd > Ni > Zn, based on their single-element indexes. Heavy metals in several samples of the soil have posed a serious threat on the ecosystem.

scholarly journals Ecological Risk Assessment of Heavy Metals in Soil of Lagos State University, Epe, Lagos State, Nigeria

2021 ◽  
pp. 52-58
Author(s):  
L. Salami ◽  
J. G. Akinbomi ◽  
R. J. Patinvoh
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Risk Index ◽  
Control Sample ◽  
Potential Ecological Risk ◽  
Soil Samples ◽  
State University ◽  
Ecological Risk Index ◽  
Sampling Locations ◽  
Lagos State

Soil contaminated with heavy metals poses an ecological risk especially to public health. The aim of this work is to assess the ecological risk of heavy metals in soil of Lagos State University (LASU), Epe, Lagos State, Nigeria. Soil samples were collected from 8 different points in LASU which were stored in various polythene bags labeled SS1 – SS8. A control sample was taken 1 km away from LASU and was labeled SC9. All the sampling locations were identified using handheld Global Positioning System (GPS) for the purpose of universal identification. The soil samples were analysed for nickel (Ni), lead (Pb), copper (Cu), Zinc (Zn), chromium (Cr), cadmium (Cd) and Iron (Fe) using Atomic Absorption Spectrophotometer. Enrichment factor (EF), potential ecological risk (Ei) and ecological risk index (RI) were carried out using the data from the analysis. The results revealed that all the EF values were less than 2 except that of lead in SS1. The Ei values were less than 40 except that of lead in SS1. Moreover RI values of all the soil samples investigated were less than 150. It was obvious from this work that the soil of LASU, Epe, Lagos State, were not enriched with heavy metals and have a low potential ecological risk.

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