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contamination and human health risk assessment of heavy metal(loid)s in topsoil and groundwater around mining and dressing factories in Chifeng,North China

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International Journal of Coal Science & Technology 2023年第1期10卷 33-47页

作者： Di Zhao Qiang Wu Yifan Zeng Juan Zhang Aoshuang Mei Xiaohui Zhang Shuai Gao Hanyuan Wang Honglei Liu Yong Zhang Shuai Qi Xu Jia National Engineering Research Center of Coal MineWater Hazard Controlling China University of Miningand TechnologyBeijing 100083China China University of Mining and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Geological Survey Academy of Inner MongoliaAutonomous Region Hohhot 010000Inner Mongolia Autonomous RegionChina

Chifeng is a concentrated mining area for non-ferrous metal minerals,as well as a key prevention and control area for heavyduty *** situation necessitates an efective ecological and human health risk assessment of heavy metal(loid)s driven by the wide distribution of metal ore processing,mining,and smelting factories in Hexigten Banner and Bairin Left *** conducted surveys to assess the levels of heavy metal(loid)s(Cr,As,Pb,Cd,and Hg)in the topsoil and groundwater of the *** results indicated that the concentrations of As,Cd,and Pb in partial soil samples exceeded the environmental quality standards of Grade *** on contamination assessments,such as geoaccumulation indices and pollution indices,we inferred that Cd,Pb,and As were primary pollutants in *** ecological risks when considered as part of the average risk indices(RI)are up to 1626.40 and 2818.76,respectively,in the two *** analysis revealed that Cd posed a very high potential ecological risk,followed by ***,the evaluation showed that the three exposure pathways of carcinogenic and non-carcinogenic risk followed a descending order:inhalation>ingestion>dermal contact,except for *** in topsoil posed a potential non-carcinogenic risk to human health,while there were no adverse efects of As in *** addition,the average total carcinogenic risk for As in the two areas,as well as the risk of Pb in the topsoil of Bairin Left Banner and all the fve heavy metal(loid)s in groundwater,exceeded human ***–Zn mines caused higher human health *** addition,the tandem contamination of heavy metal(loid)s in soil and groundwater was not *** research study provides a basis for pollution remediation to control heavy industry-induced ecological and health risks of heavy metal(loid)s.

关键词： Heavy metal(loid)s contamination indices Ecological risks Human health risks Chifeng

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Source, contamination Assessment and Risk Evaluation of Heavy Metals in the Stream Sediments of Rivers around Olode Area SW, Nigeria

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Journal of Environmental & Earth Sciences 2023年第1期5卷 65-84页

作者： Stellamaris Isioma Okonkwo Sunday Ojochogwu Idakwo Mofolorunsho Samuel Kolawole Olufemi Faloye Anthony Azubuike Elueze Department of Geology Federal University of TechnologyOwerriOwerriImo State460114Nigeria Department of Geology and Mining Ibrahim Badamasi Babangida UniversityLapaiNiger State740005Nigeria Department of Geology Federal UniversityOye-EkitiEkiti State360001Nigeria Department of Geology University of IbadanIbadan200005Nigeria

In order to investigate the source,contamination,and risk of heavy metals such as Pb,Zn,Cu,Ni,Co,Fe,Mn,and Cr,twelve(12)stream sediments and ten(10)rock samples were collected from pegmatite mining sites at Olode and its environs inside Ibadan,Southwestern *** average values and order of abundance obtained followed the pattern:Mn(595.09)>Ba(80)>Cr(50.82)>V(45.09)>Zn(29.73)>Cu(13.82)>Co(13.82)>Sr(10.46)>Ni(9.73)>Pb(9.09)>Fe(1.59).These were greater than the background values,indicating that mining has a negative impact on the study area,as indicated by the high coefficient of variation and correlation values(>0.6)for Copper-Lead(0.929),Copper-Vanadium(0.970),Copper-Chromium(0.815),Lead-Vanadium(0.884),and *** the basis of the enrichment factor(EF),the Olode sediments show extremely high enrichment for Mn and Ba in the research *** and Ni are most likely to blame for the elevated contamination levels,according to CF *** degree of contamination(CD),pollution load index(PLI),pollution index(PI),and modified pollution index(MPI)all revealed high levels of contamination in all stream sediment samples,whereas Igeo shows that the Olode stream sediments are“practically uncontaminated to extremely contaminated by Ni,Co,and Mn”.Ni and Cu are the major regulating factors that are most likely causing the possible *** a result,these findings give important information for conducting appropriate ecological management research.

关键词： Olode Heavy metals Stream sediments Risk assessment contamination indices

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Assessment of the Quality of Sediments and Agricultural Soils: Case of the Ity-Floleu Area in the Prefecture of Zouan-Hounien, Western Côte d’Ivoire

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Journal of Geoscience and Environment Protection 2020年第12期8卷 255-275页

作者： Konan Kouakou Séraphin Gbamélé Kouassi Serge Doffou Richard Jean Olive Brou Loukou Alexis Kouassi Kouakou Lazare Dongui Bini Kouamé Laboratory of Geosciences and Environment University Jean Lorougnon Guede Daloa C&ocirc te d’Ivoire Departement of Geology University Jean Lorougnon Guede Daloa C&ocirc te d’Ivoire

The objective of this study is to assess the level of metal contamination of sediments and agricultural soils in the Ity-Floleu zone. The concentrations of trace elements (Fe, Mn, As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) were measured in different seasons over two successive years. The sediment pollution index made it possible to note that the sediments and agricultural soils of the various stations studied are highly polluted in all seasons. The calculation of the geoaccumulation index indicates that surface water sediments most often experience extreme or moderate pollution in As, Cd, Cu, Hg and Zn in the dry or rainy season except in Pb in some cases. We observed that the sediments of the Cavally river present a serious pollution due to extreme anthropic activities carried out along the river. Over the entire region, the results of the potential ecological risk index (RI) indicate that all the sediments and agricultural soils analysed present a moderate ecological risk in terms of Pb and Zn in certain cases and an ecological risk is observed low bound to other metals in all seasons. This metallic pollution generated by human activities in this region can have consequences for the environment and biodiversity.

关键词： Anthropogenic Activities Cavally River contamination Factors contamination indices Metallic Trace Elements Sediments and Agricultural Soils

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