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2018-09-13T02:09:15+00:00
  • Lead and cadmium UNEP - UN Environment Programme

    The presence of cadmium in the environment, increased by activities such as years of coal and fossil-fuel usage and mining is a serious health hazard and its monitoring is essential. The accumulation of cadmium in the soil through the usage of fertilizers can affect crops and ultimately animals and humans. Its known accumulation in the food chain has the potential for causing chronic diseases ...

  • Cadmium Minerals Education Coalition

    DescriptionRelation to MiningUsesCadmium (Cd) is a very soft, silvery-white metallic element that can be cut with a knife. Cadmium has many chemical similarities to zinc and is often recovered from the primary zinc ore sphalerite. The single most important use of cadmium is in the production of nickel-cadmium (Ni-Cad) batteries.
  • Cadmium - Wikipedia

    Thus, cadmium is produced mainly as a byproduct of mining, smelting, and refining sulfidic ores of zinc, and, to a lesser degree, lead and copper. Small amounts of cadmium, about 10% of consumption, are produced from secondary sources, mainly from dust generated by recycling iron and steel scrap. Production in the United States began in 1907, but wide use began after World War I. Metallic ...

  • Biomarker responses of Peromyscus leucopus exposed to lead ...

    Biomonitoring of lead, zinc, and cadmium in streams draining lead-mining and non-mining areas, southeast Missouri, USA. Environmental Monitoring and

  • Comparison of Chemical Speciation of Lead, Arsenic, and ...

    Comparison of Chemical Speciation of Lead, Arsenic, and Cadmium in Contaminated Soils from a Historical Mining Site: Implications for Different Mobilities of Heavy Metals. Baasansuren Gankhurel* Baasansuren Gankhurel . Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan. Department of Geography, National University of

  • Zinc mining in the United States - Wikipedia

    Zinc was produced as a byproduct of lead mining in the Southeast Missouri Lead District. Austinville-Ivanhoe district, Virginia Mining ... These include the metal cadmium and the semi-metals gallium and germanium. In 1970, for every ton of zinc produced at a US smelter, there were also recovered 4.2 kilograms of cadmium, 53 grams of germanium, 18 grams of indium, and 2.9 grams of thallium ...

  • Cadmium - GreenFacts

    Cadmium is produced mainly as a by-product of mining, smelting and refining of zinc and, to a lesser degree, as a by-product of lead and copper manufacturing. Most of the cadmium produced is used in the production of nickel-cadmium batteries, which in 2004 represented 81 per cent of the total amount of cadmium. Other major uses of refined cadmium are: pigments for plastics, ceramics and ...

  • A Screening-Level Assessment of Lead, Cadmium, and Zinc in ...

    2006-06-22  Concentrations of cadmium, lead, and zinc in fish from mining-influenced waters of Northeastern Oklahoma: sampling of blood, carcass, and liver for aquatic biomonitoring. Archives of Environmental Contamination and Toxicology, 49, 76--88. CrossRef Google Scholar. Burden, V. M., Sandheinrich, M. B., Caldwell, C. A. (1998). Effects of lead on the growth and δ-aminolevulinic acid

  • Mining and Toxic Metals - Alaska Community Action On Toxics

    Mining and Toxic Metals . A case study of the proposed Donlin Creek mine . Mining activities are known to release significant amounts of toxic metals into the surrounding environment. 1. Some toxic metals frequently associated with mining include mercury, arsenic and lead. These substances are present at low concentrations in soil, rock and water, but the process of mining may release ...

  • Cadmium: 1. What is Cadmium? - GreenFacts

    AppearanceSafetyProductionUsesEnvironmentScopeEffectsPathophysiologyEcologyOther animalsConservationCadmium is in its elemental form a soft, silver-white metal. It is not usually present in the environment as a pure metal, but most often as complex oxides, sulphides, and carbonates in zinc, lead, and copper ores.
  • Biomarker responses of Peromyscus leucopus exposed to lead ...

    Biomonitoring of lead, zinc, and cadmium in streams draining lead-mining and non-mining areas, southeast Missouri, USA. Environmental Monitoring and

  • Comparison of Chemical Speciation of Lead, Arsenic, and ...

    Comparison of Chemical Speciation of Lead, Arsenic, and Cadmium in Contaminated Soils from a Historical Mining Site: Implications for Different Mobilities of Heavy Metals. Baasansuren Gankhurel* Baasansuren Gankhurel . Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan. Department of Geography, National University of

  • Biomarker responses of Peromyscus leucopus exposed to lead ...

    2018-01-29  Lead was associated with a decrease in concentrations of hepatic glutathione and thiols, whereas cadmium was associated with an increase. In addition, to support risk assessment efforts, we developed linear regression models relating both tissue lead dosages (based on a previously published a laboratory study) and tissue lead concentrations in Peromyscus to soil lead concentrations.

  • Lead, Zinc and Cadmium in Root Crops from Mineralized ...

    Lead, Zinc and Cadmium in Root Crops from Mineralized Galena-Sphalerite Mining Areas and Environment: G.O. Onyedika and G.U. Nwosu: Abstract: Concentrations of the metals leads, cadmium and zinc were estimated in root crops: Cassava (Manihot esculenta crantz), yam (Dioscorea rotundata), potato (Ipomea batatas) and cocoyam (Colocosia esculenta) harvested in some mineralized areas of

  • Concentrations of Cadmium, Cobalt, Lead, Nickel, and Zinc ...

    Scaled, skin-on, bone-in “fillet” and blood samples were obtained from northern hog suckers (n = 75) collected at nine sites representing a wide range of conditions relative to Pb–Zn mining in southeastern Missouri. All samples were analyzed for cadmium (Cd), cobalt (Co), Pb, nickel (Ni), and Zn. Fillets were also analyzed for calcium as an indicator of the amount of bone, skin, and ...

  • Lead and cadmium in maternal blood ... - africaneditors.org

    The present study was carried out to determine the lead and cadmium concentration in maternal and umbilical cord blood and placental tissue and breast milk, evaluating forty deliveries with normal evolution of pregnant women living in a mining-smelting town in Peru. In this study, mean concentration of lead in the blood of both women and their neonates were 27.2 ± 15.9 and 18.5 ± 13.0 µg/dl ...

  • A Screening-Level Assessment of Lead, Cadmium, and Zinc in ...

    2006-06-22  Concentrations of cadmium, lead, and zinc in fish from mining-influenced waters of Northeastern Oklahoma: sampling of blood, carcass, and liver for aquatic biomonitoring. Archives of Environmental Contamination and Toxicology, 49, 76--88. CrossRef Google Scholar. Burden, V. M., Sandheinrich, M. B., Caldwell, C. A. (1998). Effects of lead on the growth and δ-aminolevulinic acid

  • Shangba Village Cadmium and Lead Pollution in Wengyuan ...

    Shangba Village Cadmium and Lead Pollution in Wengyuan, Guangdong, China As early as the 1970s, Shangba villagers were already aware that pollution was affecting the village. As pollution worsened cancer deaths rose. In 2005 villagers eventually secured

  • Cadmium poisoning - Wikipedia

    Cadmium is a naturally occurring toxic metal with common exposure in industrial workplaces, plant soils, and from smoking. Due to its low permissible exposure in humans, overexposure may occur even in situations where trace quantities of cadmium are found. Cadmium is used extensively in electroplating, although the nature of the operation does not generally lead to overexposure.

  • All the information on Cadmium - Home

    Naturally-occurring cadmium-sulfide based pigments were used as early as 1850 because of their brilliant red, orange and yellow colors, and appeared prominently in the paintings of Vincent Van Gogh in the late 1800s. Germany was the first and only commercial producer of cadmium metal for industrial applications up until World War I. Thomas A. Edison in the United States and Waldemar Junger in ...

  • Concentrations of Cadmium, Cobalt, Lead, Nickel, and Zinc ...

    Scaled, skin-on, bone-in “fillet” and blood samples were obtained from northern hog suckers (n = 75) collected at nine sites representing a wide range of conditions relative to Pb–Zn mining in southeastern Missouri. All samples were analyzed for cadmium (Cd), cobalt (Co), Pb, nickel (Ni), and Zn. Fillets were also analyzed for calcium as an indicator of the amount of bone, skin, and ...

  • Shangba Village Cadmium and Lead Pollution in Wengyuan ...

    Shangba Village Cadmium and Lead Pollution in Wengyuan, Guangdong, China As early as the 1970s, Shangba villagers were already aware that pollution was affecting the village. As pollution worsened cancer deaths rose. In 2005 villagers eventually secured

  • Effects of copper, cadmium, lead, and arsenic in a live ...

    The effects of diet-borne copper, cadmium, lead, and arsenic on juvenile fish were evaluated using a live diet consisting of the oligochaete Lumbriculus variegatus.In 30 d exposures, no effects were observed on the growth and survival of rainbow trout (Oncorhynchus mykiss), fathead minnow (Pimephales promelas), and channel catfish (Ictalurus punctatus) fed diets contaminated with copper [130 ...

  • Lead and cadmium in maternal blood ... - africaneditors.org

    The present study was carried out to determine the lead and cadmium concentration in maternal and umbilical cord blood and placental tissue and breast milk, evaluating forty deliveries with normal evolution of pregnant women living in a mining-smelting town in Peru. In this study, mean concentration of lead in the blood of both women and their neonates were 27.2 ± 15.9 and 18.5 ± 13.0 µg/dl ...

  • Stabilize lead and cadmium in contaminated soils using ...

    Combination of hydroxyapatite (HAP) and potassium chloride (KCl) was used to stabilize lead and cadmium in contaminated mining soils. Pot experiments of chilli (Capsicum annuum) and rape (Brassica rapachinensis) were used to evaluate the stabilization efficiency. The results were the following: (1) the optimal combination decreased the leachable lead by 83.3 and 97.27 %, and decreased ...

  • Rock−Water Interactions Controlling Zinc, Cadmium, and ...

    In the U.S. Tri-State Mining District (Kansas−Missouri−Oklahoma) the most important geochemical interactions are degassing of CO 2 (g)-rich waters; the short-term uptake and release kinetics of zinc, cadmium, and lead; competition between iron oxyhydroxides and carbonates for zinc, cadmium, and lead; and catalysis of sulfide dissolution by iron in near-neutral waters.

  • New process to rinse heavy metals from soils - Phys.org

    2019-06-04  When poisonous heavy metals like lead and cadmium escape from factories or mines, they can pollute the nearby soil. With no easy ways to remove these contaminants, fields must be cordoned off to ...

  • Biomonitoring of lead, zinc, and cadmium in streams ...

    2006-09-07  We evaluated exposure of aquatic biota to lead (Pb), zinc (Zn), and cadmium (Cd) in streams draining a Pb-mining district in southeast Missouri. Samples of plant biomass (detritus, periphyton, and filamentous algae), invertebrates (snails, crayfish, and riffle benthos), and two taxa of fish were collected from seven sites closest to mining areas (mining sites), four sites further downstream ...

  • Long‐Term Correlations between Mining Activity and Levels ...

    Growth increments of eastern red‐cedar (Juniperus virginiana L.) from sites in the Pb mining district of southeast Missouri were subjected to multielemental analysis. Three chronologies, two of Pb an...

  • Hazards of heavy metal contamination British Medical ...

    2003-12-01  Cadmium occurs naturally in ores together with zinc, lead and copper. Cadmium compounds are used as stabilizers in PVC products, colour pigment, several alloys and, now most commonly, in re-chargeable nickel–cadmium batteries. Metallic cadmium has mostly been used as an anticorrosion agent (cadmiation).

  • Lead and cadmium in maternal blood ... - africaneditors.org

    The present study was carried out to determine the lead and cadmium concentration in maternal and umbilical cord blood and placental tissue and breast milk, evaluating forty deliveries with normal evolution of pregnant women living in a mining-smelting town in Peru. In this study, mean concentration of lead in the blood of both women and their neonates were 27.2 ± 15.9 and 18.5 ± 13.0 µg/dl ...

  • Exposure of Peromyscus leucopus to lead and cadmium in the ...

    The exposure of white-footed mice (Peromyscus leucopus) to lead and cadmium and the potential associated toxic effects were examined at three sites contaminated with lead in the Southeast Missouri Lead Mining District and at a reference site. Mice from the contaminated sites showed evidence of oxidative stress and red-blood cell δ-aminolevulinic acid dehydratase (ALAD) activity was depressed ...

  • Biomonitoring of lead, zinc, and cadmium in streams ...

    2006-09-07  We evaluated exposure of aquatic biota to lead (Pb), zinc (Zn), and cadmium (Cd) in streams draining a Pb-mining district in southeast Missouri. Samples of plant biomass (detritus, periphyton, and filamentous algae), invertebrates (snails, crayfish, and riffle benthos), and two taxa of fish were collected from seven sites closest to mining areas (mining sites), four sites further downstream ...

  • Accumulation of lead, zinc, and cadmium in a wild ...

    Lead, zinc, and cadmium were determined in a range of tissues from wild populations of bank voles (Clethrionomys glareolus) trapped on an abandoned metalliferous mine site and a reference site. Estimated dietary intakes indicated that animals were exposed to elevated levels of all three metals at the mine site, and this was generally reflected in metal residues in body tissues. Lead ...

  • Stabilize lead and cadmium in contaminated soils using ...

    Combination of hydroxyapatite (HAP) and potassium chloride (KCl) was used to stabilize lead and cadmium in contaminated mining soils. Pot experiments of chilli (Capsicum annuum) and rape (Brassica rapachinensis) were used to evaluate the stabilization efficiency. The results were the following: (1) the optimal combination decreased the leachable lead by 83.3 and 97.27 %, and decreased ...

  • Kinetic modelling of cadmium and lead removal by aquatic ...

    The main sources that contribute to lead pollution include the use of leaded gasoline, lead smelting, lead mining and coal combustion, the use of lead-based paints and lead-containing pipes in water supply systems, and additionally ceramic glazes, batteries and cosmetics manufacturing. Cadmium is released into the environment through waste streams from smelting, manufacturing of pigments ...

  • Rock−Water Interactions Controlling Zinc, Cadmium, and ...

    In the U.S. Tri-State Mining District (Kansas−Missouri−Oklahoma) the most important geochemical interactions are degassing of CO 2 (g)-rich waters; the short-term uptake and release kinetics of zinc, cadmium, and lead; competition between iron oxyhydroxides and carbonates for zinc, cadmium, and lead; and catalysis of sulfide dissolution by iron in near-neutral waters.

  • Long‐Term Correlations between Mining Activity and Levels ...

    Growth increments of eastern red‐cedar (Juniperus virginiana L.) from sites in the Pb mining district of southeast Missouri were subjected to multielemental analysis. Three chronologies, two of Pb an...

  • Cadmium Minerals Education Coalition

    It is an active metal, reacting with air and acids. Cadmium is used in low-melting alloys, especially solder. It is also used in electroplating, paint pigments (cadmium sulfide is the common pigment cadmium yellow) and rechargeable batteries (ni-cads). Cadmium absorbs neutrons and is used in the control rods that dampen nuclear reactions in fission reactors. Cadmium compounds are used in black ...

  • EXPOSURE TO CADMIUM: A MAJOR PUBLIC HEALTH CONCERN

    High intake of cadmium can lead to disturbances in calcium metabolism and the formation of kidney stones. Softening of the bones and osteoporosis may occur in those exposed through living or working in cadmium-contaminated areas. In an area of Japan where soil has been contaminated with cadmium from zinc/lead mines, Itai-itai disease used to be widespread and is still seen in women over 50 ...

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