— Total concentrations of Cu, Pb, As, Cd, Zn, Fe, Ni and Mn were determined for 81 soil samples using two types of field portable X-ray fluorescence (FPXRF) system; …
— The Bangbule Pb-Zn-Cu deposit is a large-scale skarn deposit that was recently discovered in the western Gangdese Metallogenic Belt. Previous studies have …
— From the Middle Ages until the beginning of the twentieth century, extensive Zn–Pb mining and smelting was carried out in East-Belgium. By lack of waste treatment techniques and sustainable management practices, metal-bearing slags and unprocessed waste were dumped in huge tailings, which still represent an important source of …
— Total concentrations of Cr, Cu, Zn, Pb and As were determined in soil samples from Beijing, Xinjiang, Heilongjiang, Yunnan, and Jiangsu provinces, using field portable X-ray fluorescence spectrometry (XRF). The relationship between XRF analysis results and the concentration of heavy metals in soils was established.
— The Long Chieng Track deposit contains a mineral resource of 32 Mt @ 0.77 g/t Au + 4.9 g/t Ag + 0.12% Cu. It is described here as a subvolcanic polymetallic Au-Ag-Cu-Pb-Zn deposit occurring within a folded and faulted Permian age volcanosedimentary formation in the Truong Son Fold Belt of north-central Laos.
The results of soil Cu and Zn content show that the Cu and Zn content increased significantly in PM compared to CK by 40.7% and 20.3%, respectively, whereas the soil …
— Recently, heavy metal contaminated soil has been widespread concerned. Herein, rice straw-derived biochar-supported nanoscale zero-valent iron (nZVI@BC) composite was prepared and characterized, and its remediation performance in Cu, Zn, As, Cd, and Pb contaminated soil were evaluated. nZVI@BC demonstrated better …
— Exhumation and preservation of the Bangbule Pb-Zn-Cu deposit in the western Gangdese metallogenic Belt, Tibet: Constraints from fission track …
— The results showed that the highest content of heavy metals was found in 0–5 cm soil layer in the study area. The average content of Zn, As, Pb, Cu, Cr, and Cd was 670, 424, 235, 162, 94, and 4 mg/kg, respectively, all exceeding the risk screening value of agricultural soil in China.
— The system achieved preconcentration yields ranging between 44.11% (Cd) and 77.77% (Cu) after nine hours of operation, the effectiveness of metal transport being Cu > Zn > Pb > Mn > Ni > Al > Cd. The system was applied to the preconcentration of four real seawater samples before their quantification by inductively coupled plasma–mass ...
— To bridge this gap, 18 topsoil samples of gray-brown desert farmland soil from the Jinchuan District, Gansu Province, China, were collected to analyze the total concentrations and fractions of Cu, Ni, Cd, Hg, Zn, Pb, and As with the Tessier sequential extraction method that were mainly found in the residual fraction (Pb 50%, As 99%).
— Screening of native plant species from mining sites can lead to identify suitable plants for phytoremediation approaches. In this study, we assayed heavy metals tolerance and accumulation in native and dominant plants growing on abandoned Pb/Zn mining site in eastern Morocco. Soil samples and native plants were collected and …
— The Pb isotopic composition of the sulfides from the Qiandongshan–Dongtangzi Pb-Zn deposit (with 206 Pb/ 204 Pb ratios of 18.06 to 18.14, the 207 Pb/ 204 Pb ratios of 15.61 to 15.71, and 208 Pb/ 204 Pb ratios of 38.15 to 38.50) is similar to that of the Late Triassic Xiba granite pluton, suggesting that they share the …
— The influence of different pH conditions and simulated inter-root environmental solutions on the release behavior of heavy metals (Cu, Pb, and Zn) from contaminated soils was investigated. The results indicate that heavy metal leaching from the soil is more likely to occur under acidic conditions and there is a risk of sustained …
— This study was conducted to investigate the pollution load index, fraction distributions, and mobility of Pb, Cd, Cu, and Zn in garden and paddy soils collected from a Pb/Zn mine in Chenzhou City, China. The samples were analyzed using Leleyter and Probst's sequential extraction procedures. Total metal concentrations including Pb, Cd, …
DOI: 10.1016/J.OREGEOREV.2019.02.010 Corpus ID: 133873459; The geology and mineralization of the Long Chieng Track (LCT) subvolcanic Au-Ag-Cu-Pb-Zn deposit, Lao PDR @article{Leaman2019TheGA, title={The geology and mineralization of the Long Chieng Track (LCT) subvolcanic Au-Ag-Cu-Pb-Zn deposit, Lao PDR}, author={Peter …
— In order to explore the pollution characteristic, ecological risks, human health risks, and sources apportionment of heavy metals (HMs), the concentrations of 9 HMs …
— The average of Zn, Cu, Cd, Pb and Se in all samples in each city. a–e Means ± SD indicate significant different (P < 0.05) between cities. nstrument conditions for ASV and CSV analyses of metal ...
Ion exchange removal of Cu(II), Fe(II), Pb(II) and Zn(II) from acid extracted sewage sludge – Resin screening in weak acid media ... (II), Pb(II) and Zn(II) from acid extracted sewage sludge – Resin screening in weak acid media. Water Research, 158. pp. 257-267. ISSN 0043-1354 Abstract. A shortage of phosphate rock resources has led to a ...
— The Huogeqi is a large Cu-Pb-Zn polymetallic deposit having a metal reserve of 0.7113 Mt Cu at an average grade of 1.35 % Cu, 0.78 Mt Zn at 1.46 % Zn, and 0.97 Mt Pb at 1.49 % Pb (Huang et al., 2001). In addition, iron formations within the ore-hosting sequences are also mined for iron resources (Li et al., 2021). The Neoproterozoic …
The Bangbule Pb-Zn-Cu deposit is a large-scale skarn deposit that was recently discovered in the western Gangdese Metallogenic Belt. Previous studies have focused mainly on ore genesis and ore-forming fluid, while exhumation and preservation after mineralization have not been the focus. We report fission track ages (ZFT: 43 ± 3 to 52 ± 3 Ma; AFT: 24 ± 2 …
— Purpose We used the different soluble-in-water concentrations of As, Cu, Mn, Pb and Zn from contaminated soils in an abandoned mining area (anthropogenic origin) to assess the phytotoxicity of the abandoned site using the results obtained with a Lactuca sativa L. bioassay. Material and methods The study has been carried out on potentially …
— Request PDF | Ion exchange removal of Cu(II), Fe(II), Pb(II) and Zn(II) from acid extracted sewage sludge – Resin screening in weak acid media | A shortage of phosphate rock resources has led to ...
— As, Cd, Cu, Ni, Sb, Pb, and Zn in digested soil or plant samples were then analyzed in ICP-AES (inductively coupled plasma–atomic emission spectrometry; Ultima2 JY, Horiba Company, Edison, NJ,
— The study's primary goal was to assess soil secondary salinity and selected heavy metals (Pb, Zn, Cd, Ni and Cu) contamination in irrigated arable soils.
— A comparison of Cu, Pb, As, Cd, Zn, Fe, Ni and Mn determined by acid extraction/ICP–OES and ex situ field portable X-ray fluorescence analyses. Author links open overlay panel C. Kilbride, J. Poole, ... The FPXRF is a powerful tool useful in screening sites for major contaminants. It is a fast, effective and convenient method with …
— AbstractThe authors report on a disposable sensor for the differential pulse anodic stripping voltammetric (DPASV) determination of the ions Zn(II), Pb(II) and Cu(II). Simultaneous detection is accomplished by using a screen-printed carbon electrode (SPCE) co-modified with an in-situ plated bismuth (Bi)) film and gold nanoparticles (AuNPs). The …
— Therefore, identifying novel contaminant biomarkers are urgently needed. Methods To better track heavy metal contaminations in soil and water, integrated bioinformatics analysis to identify biomarkers of relevant heavy metal, such as As, Cd, Pb and Cu, is a suitable method for long-term and large-scale surveys of such heavy metal …
contained Zn+Pb metal in selected giant and super-giant deposits (modified from Large et al. 2005). The largest shale-hosted SEDEX deposits (McArthur River, Red Dog, Howard's Pass) contain a "geologic resource" of about 30 million metric tons (Mt) Zn+Pb, compared to 7-8 Mt past production from the Rammelsberg. The "mining resource" at ...
— The abundance of tennantite (without tetrahedrite) and other sulfides makes Cap Garonne a unique mineral deposit with a highly varied secondary mineralogy. This …
— The Southern Permian basin in central Europe contains a number of important high-grade sediment-hosted Cu deposits. Laterally extensive stratabound Cu and Zn-Pb sulfide mineralized rocks are located at a major stratigraphic redox boundary, where coarse-grained continental sandstones of the uppermost Rotliegend Group are overlain …
— The uptake and distribution of four heavy metals, including copper (Cu), cadmium (Cd), lead (Pb) and zinc (Zn), and those of total phosphorus (TP) in 30 plants in North China were investigated through pot trial experiments. Accumulation and distribution of heavy metals or TP were associated with plant species, tissues, metal elements and …
— Characteristics of the spatial and temporal distributions of selected heavy metals (Cu, Zn, Cd, Pb and Hg) in Bohai Bay, north China was examined. Surface sediment samples from 15 sites were collected and analyzed for the selected metals with atomic absorption spectrometry (AAS) from the year of 1997–2007. Mean concentrations of …
This study presents the pH performance of six selected IX resins in extracting Cu 2+, Fe 2+, Pb 2+ and Zn 2+ from acetic, lactic and citric acid media simulated weak acid leachate. Acetic acid media displayed limited suppression of metal extraction, whilst lactic and citric acid media rendered MTS9100 ineffective. ...
