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.

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 Investigation of heavy metals concentration in soil around a Pb-Zn mine and ecological risk assessment

2019 ◽  
Vol 6 (3) ◽  
pp. 151-156 ◽  
Author(s):  
Amir Hossein Baghaie ◽  
Forough Aghili
Keyword(s):  
Heavy Metals ◽  
Soil Pollution ◽  
Ecological Risk ◽  
Agricultural Land ◽  
Agricultural Soils ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Pollution Level ◽  
Ecological Risk Index ◽  
Accumulation Index

Background: Soil pollution with heavy metals seriously threatens soil quality, food safety, and humanhealth. This study was conducted to determine the soil pollution level and ecological risk assessmentof different heavy metals in agricultural soils around Nakhlak Pb-Zn mine, located in Anarak district,Nain county of Isfahan province.Methods: A total of 50 soil samples were collected from agricultural land around Nakhlak mine andanalyzed to determine the concentrations of Pb, Cd, Zn, Ni, Cu, and Mn. The geo-accumulation index(Igeo), enrichment factor (EF), and potential ecological-risk index (Er) were used to assess the level ofsoil pollution with heavy metals.Results: The mean concentrations of Pb, Cd, Zn, Ni, Cu, and Mn were 355, 2.72, 347, 26, 36, and505 mg/kg, respectively, which were higher than the background values of world soils. Based on theIgeo index, the study area was moderately to heavily contaminated with Pb and Zn, uncontaminated tomoderate contaminated with Cd and Cu, and uncontaminated with Mn and Ni. According to the EFvalues, the study soil was moderately contaminated with Mn, Ni, and Cu, significantly contaminatedwith Cd and Zn, and highly enriched with Pb. The RI values showed a moderate level of heavy metalscontamination in the study soil.Conclusion: According to the results, the ecological risk of heavy metals for ecosystem in agriculturallands around Nakhlak Pb-Zn mine is moderate. However, the contamination status should be consideredperiodically.

The Seasonal Pollution Characteristics and Potential Ecological Risk Assessment of Heavy Metal in Soil of Northern Suburb Parks in Xi’an

2013 ◽  
Vol 295-298 ◽  
pp. 555-559 ◽  
Author(s):  
Li Wen ◽  
Li Zhong Liu ◽  
Cheng Cheng Ma ◽  
Na Guo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Risk Level ◽  
Index Method ◽  
Pollution Characteristics ◽  
Four Seasons ◽  
Autumn And Winter

The seasonal correlation of the same kind of heavy metal and the relationship between different heavy metals’ content were discussed, and the pollution characteristics of heavy metal were assessed by using the potential ecological risk index method. The results show that the content of heavy metals are higher in autumn and winter and lower in spring and summer. The content of Pb only has the significant correlation between autumn and winter at the 0.01 level. It has no significant correlation between the content of Cd, As, Pb and Cr in four seasons. The content of Cr and Pb is significantly correlated in winter at 0.05 level. The potential ecological risk level of Cd belongs to the slight ecological risk in spring and the medium ecological risk in the other seasons. The potential ecological risk level of As, Pb and Cr belong to the slight ecological risk in four seasons.

Ecological Risk of Heavy Metals Pollution in Sediments of Beijiang River

2012 ◽  
Vol 518-523 ◽  
pp. 1137-1140 ◽  
Author(s):  
Hui Zhang ◽  
Min Gao ◽  
Ai Ming Song ◽  
Jia Jia Zhao ◽  
Ming Wei Song
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Index Method ◽  
Ecological Risk Index ◽  
Potential Ecological Risk Index ◽  
Beijiang River ◽  
Metals Pollution ◽  
Heavy Metals Pollution

As a result of rapid economic development and urbanization, water pollution and degradation of aquatic ecosystems have caused massive damage to the functions and integrity of water resources. The Hakanson potential ecological risk index method for heavy metals toxicity assessment have been used to estimate the ecological risk of Heavy Metals Pollution in Sediments of Beijiang River. The results shows that the average concentration of Cu, Pb, Zn, Ni, Cd, Cr, Hg in sediments is 59.72, 111.29, 218.93, 15.52, 5.70, 5.70 mg/kg, 0.32ug/kg respectively. The content of Hakanson potential ecological risk index of different heavy metals could be shown as Cd> Pb> Cu> Zn> Ni> Cr> Hg. Heavy metals in several samples of the sediments have posed a serious threat on the ecosystem.

The Monitoring and Ecological Evaluation of Beng River Sediment for Heavy Metals (Hg,Pb,Cr)

2014 ◽  
Vol 675-677 ◽  
pp. 345-349
Author(s):  
Ji Cai Qiu
Keyword(s):  
Heavy Metals ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Index Method ◽  
Ecological Risk Index ◽  
Ecological Evaluation ◽  
Main Research ◽  
Bottom Mud ◽  
River Reach ◽  
Very High

In order to analysis the Heavy metals in the bottom mud at beng river, we put the river reach between the bridge of beng river beside the er’huang road and the bridge beside the yin’meng road as the main research object, survey 14 transects of bottom mud from three indications (Hg,Pb,Cr) of the river and build a relate standards about the pollution of bottom mud depend on the domestic standards, in this paper, we use the potential ecological risk index method which was putted forward by Swedish scientists Hakanson as the criterion of the pollution about heavy metals in the mud. The results show that: at the rive reach mentioned above, we found there are very high heavy metals content in the bottom mud.

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.

scholarly journals Historical Evolution of Sources and Pollution Levels of Heavy Metals in the Sediment of the Shuanglong Reservoir, China

Water ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1855 ◽  
Author(s):  
Zike Zhou ◽  
Yongping Wang ◽  
Haowei Teng ◽  
Hao Yang ◽  
Aiju Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Metal Content ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Heavy Metal Content ◽  
Ecological Risk Index ◽  
Potential Ecological Risk Index ◽  
Pollution Levels

In this study, the concentrations of seven heavy metals (Cr, Ni, Cu, Zn, As, Hg, and Pb) and Pb isotope in a sediment core from the Shuanglong reservoir, Southwestern China, were investigated. Based on the constant rate of supply (CRS) model, the age span of a 60 cm sediment sample was determined to range from the years 1944 to 2015. Combined with chronology and heavy metal content, the evolution of the sources and pollution levels of heavy metals showed a changing trend composed of various stages. The sources of heavy metals transitioned from natural origins in 1944–1964 to industrial origins in 1965–2004. The subsequent reduction in heavy metal content was mainly due to the vigorous implementation of environmental protection policies from 2005 to 2012. In recent years (2013–2015), the heavy metal content has increased due to frequent human activity. Principal component analysis (PCA), correlation analysis, and the coefficient of variation (CV) analysis indicated that Cr, Ni, Cu, Zn, and As were derived from natural processes, Pb mainly came from automobile manufacturing, and Hg was mainly from industrial sources. The values of the geo-accumulation index (Ig), single pollution index (Pi), and single potential ecological risk index (Er) showed that the contamination of Hg and Pb was slight to moderate. Moreover, the values of the potential ecological risk index (RI), pollution load index (PLI), and Nemerow index (PN) indicated that the Shuanglong reservoir is under low ecological risk.

scholarly journals Assessment of metals contamination and ecological risk in ait Ammar abandoned iron mine soil, Morocco

2016 ◽  
Vol 35 (1) ◽  
pp. 32-49 ◽  
Author(s):  
Mohamed Nouri ◽  
Abd El Majid Haddioui
Keyword(s):  
Enrichment Factor ◽  
Ecological Risk ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Soil Samples ◽  
Ecological Risk Index ◽  
Iron Mine ◽  
Accumulation Index ◽  
Geo Accumulation Index ◽  
Geo Accumulation

Abstract The present study is an attempt to assess the pollution intensity and corresponding ecological risk of phosphorus and metals including Cd, Cr, Cu, Zn, Pb and Fe using various indices like geo-accumulation index, enrichment factor, pollution and ecological risk index. In all, 20 surface soil samples were collected from the Ait Ammar iron mine of Oued Zem city, province of Khouribga, in central Morocco. The concentrations of heavy metals in soil samples were used to assess their potential ecological risks. According to the results of potential ecological risk index (RI), pollution index (PI), geo-accumulation index (Igeo), enrichment factor (EF), potential contamination index (Cp), contaminant factor (Cf) and degree of contamination (Cd), based on the averages, considerable pollution of metals in soils of study area was observed. The consequence of the correlation matrix and principal component analysis (PCA) indicated that Fe, Cu, Zn, Cr and P mainly originated from natural sources and Cd and Pb are mostly derived from anthropogenic sources. The results showed that these metals in soil were ranked by severity of ecological risk as Pb > Cd > Cu > Cr > Zn, based on their single-element indexes. In view of the potential ecological risk (RI), soils from all soil samples showed a potential ecological risk. These results will provide basic information for the improvement of soil environment management and heavy metal pollution prevention in Ait Ammar.

Chromium Contamination in Sediments of Anping Harbor, Taiwan

2014 ◽  
Vol 535 ◽  
pp. 287-292
Author(s):  
Yu Sung Hsiao ◽  
Yi Kuo Chang ◽  
Jiann Yuh Lou ◽  
Cheng Di Dong ◽  
Chih Feng Chen ◽  
...  
Keyword(s):  
Ecological Risk ◽  
Municipal Wastewater ◽  
Risk Index ◽  
River Mouth ◽  
Potential Ecological Risk ◽  
River Bank ◽  
Ecological Risk Index ◽  
Sources Of Pollution ◽  
Accumulation Index ◽  
Cr Concentration

The distribution, enrichment, accumulation, and potential ecological risk of chromium (Cr) in the surface sediments of Anping Harbor, Taiwan, were investigated. Sediment samples from ten locations were collected and characterized for Cr, aluminum, water content, organic matter, and grain size. The results show that samples collected at all monitoring points contain 23.3–881.3 mg/kg of Cr with an average of 250.0±265.4 mg/kg. The spatial distribution of Cr reveals that the Cr concentration is relatively high in the Bamboo River mouth region, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Results from the enrichment factor and geo-accumulation index analyses imply that the Bamboo River mouth sediments can be characterized as severe enrichment and moderate to strong accumulation of Cr, respectively. However, results of potential ecological risk index indicate that the sediment has low ecological potential risk. The results can provide valuable information to developing future strategies for the management of river mouth and harbor.

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