The Adsorption of Pb, Zn, Cu, Ni, and Cd by Modified Ligand …
The stock solutions of Cu 2+, Cd 2+, Zn 2+, Pb 2+, and Ni 2+ were obtained by separately preparing a calculated mass of CuSO 4 ·5H 2 O, CdCl 2 ·H 2 O, Zn(NO 3) 2 ·6H 2 O, Pb(NO 3) 2, and NiSO 4 ·6H 2 O. This stock solution produced was again diluted with distilled water to obtain the relevant initial concentrations of 0.5 to 2.5 mmol/l.
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Effect of Divalent Cations (Cu, Zn, Pb, Cd, and Sr) on
Effect of Divalent Cations (Cu, Zn, Pb, Cd, and Sr) on Microbially Induced Calcium Carbonate Precipitation and Mineralogical Properties Front Microbiol. 2021 Apr 8:12:646748. doi: 10.3389/fmicb.2021.646748. eCollection 2021. Authors Yumi Kim 1 ...
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Effects of humic acid amendment on the mobility of heavy metals (Co, Cu
The purpose of this study was to investigate the possibility of effects of humic acid on the fate and mobility of seven heavy metals (Co, Cr, Cu, Mn, Ni, Pb, and Zn) in gold mine tailings. Ten samples were taken from the tailing storage facilities of the Chatree (Akara) Gold Mine in the Phichit province, Thailand. The heavy metal fractionation in the …
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A simple strategy for the detection of Pb(II) and Cu(II) by an
Under the optimum conditions, the constructed sensor exhibited outstanding linear response of Pb(II) (0.794–39.6 ppm) and Cu(II) (0.397–19.9 ppm) with detection limits of 0.0150 and 0.0096 ppm, respectively. Finally, the fabricated sensor was further used to detect Pb(II) and Cu(II) in real samples, and the satisfactory recovery was …
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Geological, fluid inclusion and isotopic studies of the Yinshan Cu…
This polymetallic district consists of the Middle Jurassic (ca. 170 Ma) Yinshan Cu–Au–Pb–Zn–Ag deposit (950,000 tons of Cu and 107 tons of Au) (JGEB, 1996, Yinshan Lead-Zinc Mine, 1993, Wang et al., 2011b), the Middle Jurassic (ca. 170 Ma) Dexing porphyry Cu–Au–Mo deposits (6 Mt of Cu and 138 tons of Au) (Wang et al., …
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Sensitive electrochemical sensor using a …
Detection limits for Zn, Pb, and Cd using ASV were 1, 0.1, and 0.1 μg L −1, respectively. • G/PANI-modification led to a 3× improvement in signal vs. unmodified electrodes. • ASV on a plastic substrate exhibited better sensitivity than on a paper substrate. • Zn, Pb, and Cd were measured in human serum using method of standard …
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A simple method for evaluation of the total concentration of Cd, Cr, Cu
Download Citation | On Jun 25, 2018, J.G. Timm and others published A simple method for evaluation of the total concentration of Cd, Cr, Cu, Pb and Zn in sediments from the São Gonçalo channel ...
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Spatial Distribution of As, Cr, Pb, Cd, Cu, and Zn in the Water …
Herein, approximately 100.0% of the samples for Hg, 86.8% for Cd, 78.9% for As, 63.1% for Cu, and 39.5% for Zn exceeded their corresponding thresholds by comparison with the grade II level of ...
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Extraction of trace metals (Cu, Zn, Pb and Fe) as a function …
The feasibility of PP-g-AA as ion exchanger for enrichment and removal of four heavy metal ions (Cu(II), Zn(II), Cd(II), Pb(II)) in seawater was investigated. The exchange capacity of CET with the ...
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Ag-Cu-Pb-Bi mineralization from the Svishti Plaz gold …
Ag-Cu-Pb-Bi mineralization from the Svishti Plaz gold deposit, Central Balkan Mountain, Bulgaria Vassilka Mladenova, Thomas Kerestedjian, Dimitrina Dimitrova
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Simple linear regression between Pb and Zn
According to relevant standards and methods, ecological risk assessment and source analysis of 7 heavy metals (Ni, Cu, Zn, Cr, Cd, Pb and Hg) in the area Dongdagou of Baiyin were carried out.
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A review: Analytical methods for heavy metals determination …
According to WHO, EPA, NIOSH, ACGIH, and clinical chemistry, the determination of heavy metals such as Cd, Pb, Zn, Hg, Cu, Mn is very important in the …
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Sn−Zn, Sn−Pb, and Cu−Sn binary phase diagram.s 41
Download scientific diagram | Sn−Zn, Sn−Pb, and Cu−Sn binary phase diagram.s 41 from publication: Sustainable Recovery of Cu and Sn from Problematic Global Waste: Exploring Value from Waste ...
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ASSESSMENT OF A SIMPLE EXTRACTION METHOD TO …
In the present work we evaluated a simple ex-traction method using HCl at a fixed pH of 1.5 and compared it to the gastric SBRC BA method for Tl, As, Pb, Zn, Cu and Cd in a …
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Gold enrichment and the Au–Te association in the Huangtan Au–Cu–Zn
These groups include (1) Cu, Zn, Pb, Ba, Bi, Ag, and Sb as micro- or nanoscale inclusions; (2) As, Tl, Au, and Mo due to nonstoichiometric substitution; and (3) elements with a stoichiometric substitution for S (Se and Te) and Fe (Co and Ni) (Huston et al., 1995, Chouinard et al., 2005). ... Gold in Huangtan Au–Cu–Zn deposit is present in ...
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ASSESSMENT OF A SIMPLE EXTRACTION METHOD TO …
The potential to determine the gastric bioaccessibility (BA) of Tl, As, Pb(II), Cu(II), Zn(II) and Cd(II) using a simple extraction method was evaluated in selected samples from soils contaminated ...
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Migration and transformation of Pb, Cu, and Zn during co …
The co-combustion of high-alkaline coal and other type coals containing high Si/Al oxides has been proven to be a simple and effective method that will alleviate ash-related problems, but the risk of heavy metals (HMs) contamination in this process is nonnegligible. Hence, the volatilization rates and chemical speciation of Pb, Cu, and Zn …
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Middle Triassic Cu–Pb–Zn Skarn mineralization in the …
The Cu–Pb–Zn skarn mineralization has also been found in the northwestern section of the Wulonggou gold ore field. It is proposed that Cu–Pb–Zn skarn …
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A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag …
A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag metallogenic system in the Nannihu ore field, southern North China Craton: Constraints from new geochronological and pyrite geochemical data ... Constraints on the timing of gold mineralisation. Earth Planet. Sc. Lett., 98 (1990), pp. 109-128. View PDF View article …
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[PDF] Simple Gold Recovery from E-Waste Leachate by …
DOI: 10.2139/ssrn.4364624 Corpus ID: 257069544; Simple Gold Recovery from E-Waste Leachate by Selective Precipitation Using a Quaternary Ammonium Salt @article{Nogueira2023SimpleGR, title={Simple Gold Recovery from E-Waste Leachate by Selective Precipitation Using a Quaternary Ammonium Salt}, author={Andr{'e} Nogueira …
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ASSESSMENT OF A SIMPLE EXTRACTION METHOD TO …
Abstract: The potential to determine the gastric bioaccessibility (BA) of Tl, As, Pb(II), Cu(II), Zn(II) and Cd(II) using a simple extraction method was evaluated in selected samples from soils contaminated by mining and metallurgical wastes. The SBRC (Solubility and Bioavailability Research Consortium) test was used as a gastric BA comparative method …
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(PDF) Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb …
The limits of quantitation (LOQ) for the investigated elements of FP-XRF on DGT devices are 2.74 for Mn, 4.89 for Cu, 2.89 for Zn, 2.55 for Pb, and 0.48 for As (unit: μg cm(-2)).
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Contrasting regimes of Cu, Zn and Pb transport in ore …
Sulfur and chlorine are the two most important ligands accounting for metal transport in the upper crust.In this study, four metal- and sulfur-saturated model fluids with varying salinities and redox states were simulated in the Fe-Cu-Pb-Zn-Au-S-C-H-O system, over a wide pressure-temperature (P-T) range (50–650 °C, 0.8–5.0 kbar), in order to …
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Revealing the orogenic genesis of Huogeqi Cu-Pb-Zn …
Orogenic-type deposit is one of the most important economic deposit types in the world and accounts for large amounts of metal reserves, especially gold, in the …
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Contrasting regimes of Cu, Zn and Pb transport in ore …
The importance of chlorine in base metal (e.g., Cu, Pb and Zn) mineralization has been recognized for a long while (e.g., Sverjensky, 1987, Yardley, 2005, Lukanin et al., 2013).Reduced sulfur is thought to be most important in gold transport (Phillips and Evans, 2004, Williams-Jones et al., 2009, Phillips and Powell, 2010, Liu et …
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Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold …
DOI: 10.1016/j.oregeorev.2024.106131 Corpus ID: 270768975; Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold ore field, Eastern Kunlun Orogen, NW China: Insights from phlogopite Ar–Ar and zircon U–Pb dating and Sr–Nd–Pb–Hf isotopes
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Cu isotopes in groundwater for hydrogeochemical mineral …
To this end, the current study explores the Cu isotope compositions—δ 65 Cu—of groundwater samples from environmental monitoring bores (18 bores, 1 tailings dam water sample) proximal and distal to the world-class Mount Isa Cu–Zn–Pb deposit (Australia), alongside Cu isotope compositions of 12 chalcopyrite samples from within or …
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Eco-friendly and rapid extraction of gold by in-situ catalytic
After boiling to 5 mL, add 30 mL deionized water. Slowly pour the solution through an activated carbon layer to filter the solution and adsorb gold. Calcine the …
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Metallogenesis of the orosirian epithermal coringa gold-silver (Cu-Pb
The Coringa gold-silver (Cu-Pb-Zn) deposit, in southeastern of Tapajós Mineral Province, is hosted in felsic volcanic rocks the Vila Riozinho Formation (1996 ± 21 Ma) and in the Serra Alkali Feldspar Granite (1999 ± 25 Ma), and has been interpreted to have formed in a post-collisional volcano-plutonic setting. The mineralized shear-vein ...
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Spatial Distribution of As, Cr, Pb, Cd, Cu, and Zn in the
Historical and active mining has adversely affected the geochemistry of the Jiehe River in the Jiaodong Peninsula, which has the largest gold ore reserves in China. Water and sediment samples were collected along the 37.8 km long river during the critical low flow season. Samples were analyzed for their geochemical properties, total …
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Geological, fluid inclusion and isotopic studies of the Baiyangping Pb
In contrast, the Pb–Zn mineralization reveals higher and more variable δ 34 S (‰) values (–4 to 18) and Pb isotopic ratios (208 Pb/ 204 Pb = 38.0–39.5, 207 Pb/ 204 Pb = 15.3–16.0, and 206 Pb/ 204 Pb = 18.0–19.0) that correspond to wall-rock and basement rock compositions in the region. This indicates that the sulfur and lead that ...
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Thermodynamic description of the Cu–Pb–Zn system
The thermodynamic description of the Cu–Pb–Zn systems is presented in Table 2.The data marked with a reference code were adopted from the earlier SGTE …
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A simple strategy for the detection of Pb(II) and Cu(II) by an
The processing of hierarchical porous zeolitic imidazolate frameworks (ZIF-8) into a cellulose paper using sheet former Rapid-Köthen (R.K.) is reported.
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Determination Ca, Cu, Fe, Mn, and Zn release from food in simple …
Ultra-pure water of resistance 18 MΩ cm −1 was obtained from a Milli-Q purification device (Millipore Co.). The standard solutions for Ca, Cu, Fe, Mn and Zn, 1000 μg mL −1, were from National Nonferrous Metals and Electronic Materials Testing Center.Nitric acid and hydrogen peroxide 30% (m/v) were from Tianjin Kemio Chemical …
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