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potential ecological risks of Heavy Metals in Soils of Shandong Peninsula Blue Economic Zone

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Agricultural Science & Technology 2019年第1期20卷 42-48页

作者： DAI Jie-rui Shandong Institute of Geological Survey Shandong Engineering Research Center of Land Quality Geochemistry and PollutionPrevention Jinan 250013 PRC

In this research, soil samples were collected from Shandong Peninsula Blue Economic Zone to investigate heavy metal pollutions in this region and to evaluate the potential ecological risks of heavy metal pollutants based on Hakanson potential ecological risk Indexes. According to the results, Hg was the primary heavy metal pollutant in Blue Economic Zone, followed by Cd, Cu, and Pb as prevalent pollutants. Heavy metals ranked in order of their pollution degrees are: Hg>Cd>Cu>Pb>Zn>Cr>As;the potential ecological risks of heavy metals follow the order of Hg>Cd>As>Pb>Cu>Cr>Zn. Heavy metal pollutions did exist in this region to a certain extent, and the percentage of potential ecological risk in “strong” and “severe” degree reached up to 13.75%. This composite risk characteristic was subject to the restriction of Hg and Cd mainly distributed in Laizhou-Zhaoyuan- Yantai, Muping-Rushan Goldmine, and other densely-populated regions, threatening the safety production of crops. The combined effects of geological background and human activities, e.g. gold mining and domestic pollutants, were the main causes of high potential ecological risks of heavy metals in local environment.

关键词： Soil Heavy metal pollution potential ecological risk Shandong Peninsula Blue Economic Zone

Evaluation of ecological risk and primary empirical research on heavy metals in polluted soil over Xiaoqinling gold mining region,Shaanxi,China

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Transactions of Nonferrous Metals Society of China 2010年第4期20卷 688-694页

作者：吴耀国徐友宁张江华胡思海 Department of Applied Chemistry Northwestern Polytechnical University Xi'an Institute of Geology and Mineral Resources

Soil,crop and residents'hair over Xiaoqinling gold mining region,China,which was selected as a case study,were sampled and analyzed for Hg,Cd,Pb,Cu,Cr,As and Zn *** concentrations of heavy metals in soil or crop and hair samples were used to assess their potential ecological risks,or to find the responses to these metals as evidences to prove the potential risk was coming down to observed harm,*** results showed that,these metals in soil were ranked by severity of ecological risk as Hg>Cd>Pb>Cu>Cr>As>Zn,based on their single-element *** the view of the potential ecological risk indexes,of all soil samples,about half had significantly high or high potential ecological risk,which covered more than 74%of the studied *** of the risks were 97.41%from Hg,Pb and Cd,especially,84.37%from *** the single-element and potential ecological risk indexes indicated that,the ecological risk grades had a special spatial characteristic,and increased from northwest to southeast *** was agreed with the spatial distribution of the strength in gold mining activities over the studied *** concentrations of Hg and Pb were higher than their relative backgrounds in the corps,and were even 9.48 and 25.09 times higher than their relative backgrounds in residents'hair,*** these showed that the heavy metals in the soil had a high potential ecological risk,especially,had been affecting these crops'growing and yield,and even the residents'health through food ***,these metals'potential ecological harm had been coming down to observed harm to the ecology.

关键词： gold mining activity soil pollution heavy metal potential ecological risk

ecological risk of Heavy Metals in Sediment Around Techeng Island Special Marine Reserves in Zhanjiang Bay

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Journal of Ocean University of China 2020年第3期19卷 561-568页

作者： ZHANG Cuiping ZHENG Zhaoyong YAO Shaohui JIA Houlei XIAN Xianheng WANG Liang South China Sea Planning and Environment Research Institute SOAGuangzhou 510300China South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301China

The concentrations of five metals(Cu, Pb, Zn, Cd and Hg) were measured in sediments obtained before and after the establishment of Techeng Island Special Marine Reserves(TCISMR) in Zhanjiang Bay to evaluate the ecological risk of heavy metals. The results showed that average values of potential ecological risk indexes of heavy metals at all stations increased slightly from 32.09 to 30.54 after establishment of TCISMR. Optimal semivariance simulation showed that the contents of five heavy metals have strong spatial correlations in August 2010(before), while this correlations weakened in April 2013(after establishment of TCISMR), suggesting that the main sources of heavy metals changed. The Hakanson risk Index(HRI) values in Donghai levee, central and southern parts of Zhanjiang harbor were high up to 60.13 and 46.46, respectively. And Zhanjiang Bay Channel, the areas around special marine reserves, the artificial reef areas and mangrove areas at south of Techeng Island are the areas with low ecological risk and high ecological value, which should be treated as the prior ecological protection areas. Our study provided a priority control pattern of heavy metal pollution in TCISMR, which greatly benefits the sustainable development and resource protection in Zhanjiang Bay.

关键词： Techeng Island Special Marine Reserves surface sediment heavy metals potential ecological risk prior conservation area

Influence of Copper on Transport and Dissipation of Lambda-Cyhalothrin and Cypermethrin in Soils

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Pedosphere 2013年第3期23卷 395-401页

作者： LIU Jun L Xiao-Meng XIE Ji-Min LI Ping-Ping HAN Jian-Gang SUN Cheng School of the Environment Jiangsu University State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences School of Chemistry and Chemical Engineering Jiangsu University Jiangsu Provincial Key Laboratory of Modern Agricultural Equipment and Technology Institute of Agricultural Engineering Jiangsu University State Key Lab of Pollution Control and Resource Reuse Nanjing University

Repeated applications of bordeaux mixture （a blend of copper sulfate and calcium hydroxide） and pyrethroid insecticides （Pys） have led to elevated copper （Cu） and Pys concentrations in vineyard surface soils. To understand the potential influence of Cu on the fate of Pys in the soil environment, we selected two Pys, cypermethrin （CPM） and lambda-cyhalothrin （A-CHT）, and two typical Chinese vineyard soils, Haplic Acrisol and Luvic Phaeozem, as experimental samples. The dissipation experiment was conducted at room temperature in the dark, and the transport of both Pys through the soils was investigated using soil thin-layer chromatography. The results showed that the transport of Pys in both soils increased as the Cu2＋ concentration increased from 0 to 100 mg L-1, and Pys were more transportable in Haplic Acrisol （HA） than in Luvic Phaeozem （LP） under the same experimental conditions. For CPM, only 100 mg L-1 of Cu2＋ significantly （P 〈 0.05） increased Pys transport through both soils relative to water. Lambda-CHT was significantly （P〈0.05） transported through HA by all the Cu2＋ concentrations compared to water, and all but the 1 mg L-1 of Cu2＋ significantly （P 〈 0.05） increased the transport of A-CHT through LP relative to water. However, the dissipation rates of CPM and λ-CHT decreased with the addition of Cu to soils. Our findings suggest that the risk of groundwater contamination by Pys increases in the soils with elevated Cu concentrations.

关键词： Haplic Acrisol Luvic Phaeozem potential ecological risk pyrethroid insecticides soil thin-layer chromatography

Impact of coal power generation on the characteristics and risk of heavy metal pollution in nearby soil

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Ecosystem Health and Sustainability 2020年第1期6卷 412-423,411页

作者： Yiqun Zhang Di Wu Chenxing Wang Xiao Fu Gang Wu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Architecture Design and Research Chinese Academy of SciencesBeijingChina

Introduction:The development of coal power base(CPB)poses a severe challenge to the *** conducted a soil survey in Xilinhot CPB,to evaluate and analyze the pollution characteristics,potential ecological risk,and sources of six heavy metals(As,Pb,Cu,Zn,Mn,and Cd)in soil by using Geo-accumulation index,revised Nemerow integrated pollution index(RNIPI),and potential ecological risk index(RI).Outcomes/other:The results showed that the pollution of Cd and As were *** mean of Cd and As were 1.11 mg·kg^(-1) and 25.13 mg·kg^(-1),which were 42.55 times and 4.41 times higher than its local background *** Geo-accumulation indices showed the contamination degree of Cd was strong and As was moderate,and the status of Cu,Pb,Zn,and Mn were *** was strongly contaminated based on its RNIPI and RI ***:The accumulations of As,Pb,and Cd were mainly associated with anthropogenic sources,including coal mining and combustion,and industrial exhaust ***,Mn,and Zn were primarily originated from the parent material(natural sources).Conclusion:This study provides scientific basis and effective countermeasures for the prevention and control of soil pollution in surrounding areas of CPB.

关键词： Soil pollution heavy metal contamination potential ecological risk sustainability coal power base Xilinhot

Pollution and health risk assessment of heavy metals in soils of Guizhou,China

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Ecosystem Health and Sustainability 2021年第1期7卷 6-17页

作者： Gao Yu Fen Chen Hongli Zhang Zuhua Wang College of Agroforestry Engineering and Planning Tongren UniversityTongrenPeople’s Republic of China Key Laboratory of Original Agro-Environmental Pollution Prevention and Control Ministry of Agriculture and Rural Affairs/Tianjin Key Laboratory of Agro-environment and Safe-productTianjinPeople’s Republic of China Remote Sensing Monitoring Department Geo-Compass Information Technology CompanyLTDBeijingPeople’s Republic of China

Mining of minerals in Guizhou,China,where it is enriched with reserves,may lead to soil contamination with heavy *** assessed the risk of eight typical heavy metals in Guizhou soils by collecting province-wide data available in the literature and using the geo-accumulation index method,the ecological risk assessment method,and the USEPA health risk assessment *** concentrations of eight heavy metals,except for Pb and Cr,were above the background *** heavy metal pollution evaluation results showed that As,Cu,Zn,Pb,Cr,Cd,and Ni reached the pollution levels,while Hg fell into the category of moderate ***,Cu,Zn,Pb,Cr,and Ni posed low potential ecological risk,while Cd and Hg demonstrated a considerable or a very high potential ecological ***,the integrated potential ecological risk was ranked“very high”.Regarding to health risk,the non-carcinogenic risks caused by heavy metals were insignificant,but the carcinogenic risk caused by As was ***,there appeared serious soil contamination of Hg and As,with the latter also being the greatest potential risk to human *** Hg and As should stay at the highest priory for remediation efforts in Guizhou soils.

关键词： Heavy metals geo-accumulation index potential ecological risk human health risk

ecological risk assessment and early warning of heavy metal cumulation in the soils near the Luanchuan molybdenum polymetallic mine concentration area,Henan Province,central China

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China Geology 2023年第1期6卷 15-26页

作者： Zhen-yu Chen Yuan-yi Zhao Dan-li Chen Hai-tao Huang Yu Zhao Yu-jing Wu Xi’an Center of China Geological Survey Xi’an 710119China School of Earth Science and Resources China University of GeosciencesBeijing 100083China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China No.3 Geological Exploration Institute Henan Provincial Bureau of Geo-exploration and Mineral DevelopmentZhengzhou 450014China Fujian Water Resources and Hydropower Survey Design and Research Institute Co.Ltd.Fuzhou 350001China

The Luanchuan molybdenum polymetallic mine concentration area is rich in mineral resources and has a long history of *** environmental impact of long-term mining activities cannot be *** is of great significance to study the ecological risk and the accumulation trends of heavy metals in the soil of mining areas for scientific prevention and control of heavy metal *** the Taowanbeigou River Basin in the mine concentration area as the research object,the ecological pollution risk and cumulative effect of heavy metals in the soil of the basin were studied by using the comprehensive pollution index method,potential ecological risk assessment method and geoaccumulation index *** this basis,the cumulative exceeding years of specific heavy metals were predicted by using the early warning *** comprehensive potential ecological risk of heavy metals in the soil near the Luanchuan mine concentration area is moderate,and the single element Cd is the main ecological risk factor,with a contribution rate of 53.6%.The overall cumulative degrees of Cu and Pb in the soil are“none-moderate”,Zn and Cd are moderate,Mo has reached an extremely strong cumulative level,Hg,As and Cr risks are not obvious,and the overall cumulative risks order is Mo>Cd>Zn>Cu>Pb>*** to the current accumulation rate and taking the risk screening values for soil contamination of agricultural land as the reference standard,the locations over standard rates of Cu,Zn and Cd will exceed 78%in 90years,and the over standard rate of Pb will reach approximately 57%in 200 *** cumulative exceeding standard periods of As,Cr and Hg are generally long,which basically indicates that these elements do not pose a significant potential threat to the ecological *** activities will accelerate the accumulation of heavy metals in *** the continuous development of mining activities,the potential pollution risk of heavy metals in the soil of mining areas will

关键词： Soil Heavy metals Mining impact Cumulative effect potential ecological risk Cumulation early warning Luanchuan mine concentration area Environmental geological survey engineering

Spatial distribution and potential ecological and health risks associated with heavy metals in the Ijero-Ekiti mining site,Nigeria

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Regional Sustainability 2024年第1期5卷 26-41页

作者： Johnson Adedeji OLUSOLA Adeyinka Oluyemi ATURAMU Olufunke ASAOLU Olusesan Sola OGUNLEYE Department of Geography and Planning Science Ekiti State UniversityAdo Ekiti360211Nigeria Institute of Ecology and Environmental Studies Obafemi Awolowo UniversityIle IfeOsun State220101Nigeria Department of Geology(Climate Change and Paleobiology Group) Ekiti State UniversityAdo Ekiti360211Nigeria Environmental Natural Resources and Blue EconomyEurope and Central AsiaWorld Bank GroupWashington D.C.20433the USA

Artisanal gold mining,a labor-intensive and antiquated technique,is a growing industry and the source of income for rural communities all over the ***,artisanal gold mining has potential negative and long-term effects on economy,environment,and *** study collected soil samples from 16 sample points including a control point to examine the pollution degrees and spatial distribution of heavy metals,as well as ecological and health risks associated with heavy metal pollution in the Ijero-Ekiti mining site,*** Information System(GIS)and remote sensing technologies were used to identify regions with high concentrations of heavy metals and assess the environmental impact of gold mining *** results show that the mean heavy metal concentrations of 16 soil pointa are 8.94(±5.97)mg/kg for As,0.18(±0.54)mg/kg for Cd,0.11(±1.06)mg/kg for Co,14.32(±3.43)mg/kg for Cr,6.89(±0.64)mg/kg for Cu,48.92(±11.77)mg/kg for Fe,135.81(±30.75)mg/kg for Mn,5.92(±0.96)mg/kg for Ni,5.72(±1.66)mg/kg for Pb,and 13.94(±1.38)mg/kg for *** study reveals that heavy metal concentration in soils follows the order of Mn>Fe>Cr>Zn>As>Cu>Ni>Pb>Co>*** analysis of soil samples indicates that 3 principal components(PCs)account for 70.008%of the total variance and there are strong positive correlations between various pairs of heavy *** total potential ecological risk index(309.599)in the study area is ***-carcinogenic risk suggests that there may be long-term health impacts on people who work in the mining areas due to chronic exposure to the *** on the study,the hazard index of carcinogenic health risks associated with heavy metals through ingestion is 520.00×10^(–4).Dermal contact from As and Cr also increases the risk of cancer,with the highest hazard index value of 18.40×10^(–4).The lowest exposure pathway,with the hazard index value of 0.68×10^(–4),indicates that the inhalation of heavy metals has a comparatively low risk of can

关键词： Artisanal gold mining Heavy metals Exposure pathway potential ecological risk Geo-accumulation index Ijero-Ekiti mining site

Fractional distribution and risk assessment of heavy metal contaminated soil in vicinity of a lead/zinc mine

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Transactions of Nonferrous Metals Society of China 2014年第10期24卷 3324-3331页

作者：黄顺红湖南有色金属研究院长沙410100 有色金属工业环境保护行业重点实验室长沙410100

The pollution characteristics of Pb, Cd, Zn, Cu and Ni in soil of lead-zinc mining area were studied. The results indicate that the contamination degree followed the sequence of Cd〉Pb〉Zn〉Ni〉Cu and concentrations of Pb, Cd and Zn exceeded corresponding limits of the Chinese National Soil Environmental Quality Standard III. The soil was extremely polluted by Cd（Iego=5.26）, moderately to heavily polluted by Zn（Iego=2.38）, heavily to extremely polluted by Pb（Iego=4.13）. The results of BCR three-step sequential extraction procedure show that the active Cd, Pb and Zn were relatively high and might exert adverse effects on the plants grown in the soil, while Cu and Ni existed in soil with a relatively stable form. potential ecological risk results indicate that soils were engaging in a high potential ecological risk by pollution of Cd and should be given rise to concern.

关键词： heavy metals chemical speciation geoaccumulation index potential ecological risk