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A practical method for identifying key factors in the distribution and formation of heavy metal pollution at a smelting site

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Journal of Environmental Sciences 2023年第5期127卷 552-563页

作者： Jiaqing Zeng Wenshun Ke Min Deng Jingqiang Tan Chuxuan Li Yizhi Cheng Shengguo Xue School of metallurgy and Environment Central South UniversityChangsha 410083China School of Geosciences and Info-physics Central South UniversityChangsha 410083China New World Environment Protection Group of Hunan Changsha 410083China

Smelting activities are the main pathway for the anthropogenic release of heavy metals(HMs)into the soil-groundwater environment.It is vital to identify the factors affecting HMs pollution to better prevent and manage soil pollution.The present study conducted a comprehensive investigation of HMs in soil from a large abandoned Zn smelting site.An integrated approach was proposed to classify and quantify the factors affecting HMs pollution in the site.Besides,the quantitative relationship between hydrogeological characteristics,pollution transmission pathways,smelting activities and HMs pollutionwas established.Results showed that the soils were highly contaminated by HMs with a pollution index trend of As>Zn>Cd>Pb>Hg.In identifying the pollution hotspots,we conclude that the pollution hotspots of Pb,As,Cd,and Hg present a concentrated distribution pattern.Geo-detector method results showed that the dominant driving factors for HMs distribution and accumulation were the potential pollution source and soil permeability.Additionally,the main drivers are variable for different HMs,and the interaction among factors also enhanced soil HMs contamination.Our analysis illustrates how the confounding influences from complex environmental factors can be distilled to identify key factors in pollution formation to guide future remediation strategies.

关键词： Zinc smelting site heavy metal pollution Spatial distribution Hotspot identification Geographical detector

Early Warning of heavy metal pollution after Tailing Pond Failure Accident

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Journal of Earth Science 2022年第4期33卷 1047-1055页

作者： Yonggui Wang Yinqun Yang Qiang Li Yaxin Zhang Xiaolong Chen Hubei Key Laboratory of Critical Zone Evolution School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China Changjiang Water Resources Protection Institute Wuhan 430051China Beijing Tsinghua Holdings Human Settlements Environment Institute Beijing 100083China

heavy metal pollution is a major issue after tailing pond failure accident.It is important to predict pollution trends for limited data of pollution sources.A simple phase separation heavy metal model was built for early warning simulation of heavy metal pollution accidents.Based on this,a new simulation framework has been developed to predict the pollution trends of the downstream according to the measured data at upstream sections.By setting the upstream monitoring date as the inflow boundary condition,the changing processes of heavy metal manganese(Mn) with different phases in the downstream can be accurately simulated and forecasted.Results showed that the concentration of the suspended phase in the downstream was larger than that in the aqueous phase and sediment phase.With this,the early warning of pollution trends after accidents could be made a few days ahead.It indicates that the impact of sediment on heavy metal should not be ignored in the early warning of tailing pond failure accidents.

关键词： heavy metal pollution early warning tailing pond failure accident phase separation model

Health Risks Assessment of heavy metal pollution in the Soil-Crop System from an E-Waste Dismantling Area

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Phyton-International Journal of Experimental Botany 2022年第12期91卷 2669-2685页

作者： Shengting Rao Jia Fang Keli Zhao Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province Zhejiang Agriculture and Forestry UniversityHangzhou311300China

Soil is an essential resource for agricultural production.In order to investigate the pollution situation of heavy metals in the soil-crop system in the e-waste dismantling area,the crop and soil samples(226 pairs,including leaf vegetables,solanaceous vegetables,root vegetables,and fruits)around the e-waste dismantling area in southeastern Zhejiang Province were collected.The concentrations of Cd,Cu,Pb,and Cr were determined.The average concentrations of Cd,Cu,Pb,and Cr in soils were 0.94,107.79,80.28,and 78.14 mg kg-1,respectively,and their corresponding concentrations in crops were 0.024,0.7,0.041,and 0.06 mg kg-1,respectively.The transfer capacity of leaf vegetables was significantly higher than that of non-leaf vegetables,and the accumulation of four heavy metals in crops tended to be Cd>Cu>Cr/Pb.The pollution index’s results revealed that the soil pollution degree under different land uses ranked as root vegetables soil>leaf vegetables soil>solanaceous vegetables soil>fruit soil.The carcinogenic and non-carcinogenic risks of heavy metal exposure were ranked as food intake>accidental ingestion>dermal contact>inhalation.The comprehensive non-carcinogenic risk was ranked as Cr>Cd>Pb/Cu.Our results could be used to provide useful information for further crop cultivation layout in the study area,which can guarantee the local residents’health and food safety.

关键词： E-waste dismantling area soil-crop system heavy metal pollution risk assessment

A REVIEW OF heavy metal pollution IN THE PEARL RIVER ESTUARY

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Journal of Hydrodynamics 2004年第4期16卷 367-378页

作者： HUANGSui-liang ONYXW.H.Wai CollegeofEnvironmentalScienceandEngineering NankaiUniversityTianjin300071China DepartmentofCivilandStructuralEngineering TheHongKongPolytechnicUniversityHongKongChina

Since 70'' s, the economy and society in the Pearl River Delta region havebeen undergoing a great development. pollution control and environment protection have received muchpublic attention. As heavy metals are an important toxic pollutant source in this area and are notbiodegradable in general, a lot of scientists in China, especially in Southern China, devote theirfocus on studying the pollution caused by heavy metals in the Pearl River Estuary (PRE). This paperpresents a comprehensive review on the heavy metal pollution research and its related research inthis area. It is suggested that the study of heavy metal pollution in PRE should be coupled withwater movement, sediment motion and tidal characteristics in this region. Studying core sediments invarious locations is recommended to reveal the history of heavy metal pollution in PRE and improvethe understanding of the fate and transport of metals.

关键词： the pearl river estuary (PRE) heavy metal pollution estuary hydrodynamic pollutant transport-transformation

Application　of　face－graph　in　heavy　metal　pollution　assessment　in　river　sediment

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Journal of Environmental Sciences 1994年第2期6卷 206-214页

作者： Jia Zhenbang Zhao Zhijie(Geography Department, Peking University,Beijing 100871, China)Zhang Hui(Chinese Research Academy of Environmental Sciences,Beijing, China)Zhang Baoquan Zhao Lihua(Environmental Protection Survey Station, Benxi, China)

On the basis of sedimentation principles and environmental chemical characteristics of heavymetal, combine international new methods-face graph on heavy metal pollution assessment withmulti-variable graph expression, the article made a synthetical assessment study on state of heavymetal pollution and potential ecological risk of Taizi River sediment in Benxi City reach. The re-sults of the study indicated that the state of heavy metal pollution of Taizi River in Benxi Cityreach is very serious, appropriate counter measures should be taken.

关键词： face graph heavy metal pollution sediment potential ecological risk index.

Assessment of heavy metal pollution from the sediment of Tupilipalem Coast,southeast coast of India

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International Journal of Sediment Research 2018年第3期33卷 294-302页

作者： Sreenivasulu Ganugapenta Jayaraju Nadimikeri Sundara Raja Reddy Balam Chinnapolla Lakshmanna Ballari Rajasekhar Madiga Nirmala K Lakshmi Prasad Telia Department of Geology Yogi Vemana University Department of Geology Sri Venkateswara University Institute of Ocean Management Anna University Department of Earth Sciences Yogi Vemana University

Sediment from twelve stations was sampled from the Tupilipalem Coast, southeast coast of India, and the presence of a set of heavy metals was established including iron(Fe), manganese(Mn), chromium(Cr),copper(Cu), nickel(Ni), lead(Pb), zinc(Zn) and cadmium(Cd). The heavy metals were assessed by factor analysis, the results of which showed positive and/or negative correlations among Fe, Mn, Cr, Cu, Ni, Pb,Zn, and Cd. Factor analysis also indicated that heavy metals in the sediments of the study area have different natural and anthropogenic sources. Similarly, a sediment pollution assessment was done using the Geoaccumulation Index(Igeo), Enrichment Factor(EF), and pollution Load Index(PLI). The Geoaccumulation Index indicated that the surface sediment of the Tupilipalem Coast was extremely contaminated with Fe, Mn, Cr, Cu, Ni, Pb, and Zn. The calculation of enrichment factors showed a significant enrichment with respect to Pb, Zn, and Cd and a moderate enrichment with Cr, Cu, and Ni. The falling trend of average contents’ enrichment factors is Cd > Pb > Zn > Cu > Cr > Ni > Mn > Fe. The PLI values of the Cd show higher(> 1) values due to the influence of distinct external sources like agricultural runoff, industrial activities, and other anthropogenic inputs. Ninety two percent of heavy metals under study showed the highest concentrations at station TP-5 where the Buckingham Canal and other agricultural and aquacultural effluents connect with the Bay of Bengal. This location is the second inlet which is periodically closed and it seemed that these parts of the study area are heavily affected by anthropogenic pollution.

关键词： Factor analysis Geo accumulation index Enrichment factor pollution load index heavy metal pollution East coast of India

Acid Mine Drainage and heavy metal pollution from Solid Waste in the Tongling Mines, China

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 146-153页

作者： XUXiaochun XIE Qiaoqin CHEN Fang WANG Jun WU Wentao School of Resources and Environment Engineering Hefei University of Technology Hefei 230009 China

Based on investigation of the characteristics of solid waste of two different mines, the Fenghuangshan copper mine and the Xinqiao pyrite mine in Tongling, Anhui province in central-east China, the possibility and the differences of acid mine drainage （AMD） of the railings and the waste rocks are discussed, and the modes of occurrence of heavy metal elements in the mine solid waste are also studied. The Fenghuangshan copper mine hardly produces AMD, whereas the Xinqiao pyrite mine does and there are also differences in the modes of occurrence of heavy metal elements in the railings. For the former, toxic heavy metals such as Cu, Pb, Zn, Cd, As and Hg exist mostly in the slag mode, as compared to the latter, where the deoxidization mode has a much higher content, indicating that large amounts minerals in the waste rocks have begun to oxidize at the earth surface. AMD is proved to promote the migration and spread of the heavy metals in mining waste rocks and lead to environmental pollution of the surroundings of the mine area.

关键词： acid mine drainage heavy metal pollution solid waste Tongling Anhui province China

Effects of heavy metal pollution on farmland soils and crops:A case study of the Xiaoqinling Gold Belt,China

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China Geology 2020年第3期3卷 402-410页

作者： Rui-ping Liu You-ning Xu Jiang-hua Zhang Wen-ke Wang Rafaey M Elwardany Xi’an center China Geological SurveyMinistry of Natural ResourcesXi’an 710054China Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education Xi’an 710054China Key Laboratory for Geo-azards in Loess Area Ministry of Natural ResourcesXi’an 710054China Field base of scientific observation of Shannxi Tongguan Ministry of Natural ResourcesXi’an 710054China School of Environmental Science&Engineering of Chang’an University Xi’an 710054China School of Earth Science and Land Resources of Chang’an University Xi’an 710054China Faculty of Science Al-Azhar UniversityAssiut 71524Egypt

This paper focuses on the heavy metal enrichment and heavy metal pollution degree associated with mining activities in some crops and the soils of different parent materials in the Xiaoqinling Gold Belt.According to the geochemical analysis results of the soils observed in the gold belt,the soils are most highly enriched in Pb,followed by Cr,Cu,and Zn.Furthermore,they are relatively poor in Hg,Cd,and As.It is also shown that the heavy metals in all kinds of soils have the same geochemical characteristics in the gold belt.As for the crops(such as corn and wheat)in the gold belt,Zn and Cu are the most abundant elements,followed by Pb and Cr.Meanwhile,Hg,Cd,and As were found to have relatively low concentrations in the crops.The heavy metals in wheat and corn have the same geochemical characteristics in the gold belt in general.Compared to the aeolian loess soils and the crops therein,heavy metals are more enriched in diluvial and alluvial soils and the crops therein.As shown by relevant studies,the Hg,Pb,Cd,Cu,and Zn pollution are mainly caused by mining activities.Corn and wheat in the gold belt have a high tendency of risk exposure to heavy metal pollution since they are mostly affected by mining activities and feature high background values of heavy metal concentrations.Furthermore,wheat is more liable to be enriched in heavy metals than corn is grown in all types of soils.The Hg pollution in soils leads to Hg accumulation,increasing the risk of Hg uptake in crops,and further affecting human health.This study will provide a scientific basis for the control and management of heavy metals in farmland soils of mining areas.

关键词： heavy metal pollution Crops Farmland Environmental investigation engineering of soil Xiaoqinling Gold Belt China

Sediment quality criteria for heavy metal pollution in the Le An River with triad approach

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Journal of Environmental Sciences 1998年第3期10卷 2-8页

作者： Liu Wen xin, Tang Hong xiaoSKLEAC, Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

In this study, integrative traid was used to sediment quality in the Le An River, which has been strongly contaminated by large amount of Cu, Pb, Zn,Cd, As and Cr discharging from mining activities. All available data collected from chemical analyses,toxic tests and field survey on benthic macroinvertebrates were transformed into ratio to reference(RTR) and relevant scales.The responses of receiving environment to mining impacts were illustrated by traid graphs. Traid results indicated that a sectional distribution pattern existed from upstream to downstream:(a) relative clean upstream;(b) serious contaminated middle stream;(c) gradual recovery downstream. This situation was closely related with local mining activities, which caused obvious degradation of sediment quality in some sections, therefore, remediation was required urgently.

关键词： triad sediment quality criteria heavy metal pollution Le An River.