The mean Cu (δ 65 Cu AE647), Zn (δ 66 Zn IRMM3702), and Pb (206 Pb/ 207 Pb) isotopic compositions of APs were +0.22 ± 0.26‰ (2sd), −0.10 ± 0.20‰ (2sd), and 1.1852 ± 0.0448 (2sd), respectively. While the concentrations of Cu, Zn, and Pb in APs differed widely depending on the manufacturer, the isotopic compositions of the metals fell ...
While screening for ... Given the limitation in the database, As, Cd, Cu, Mn, Ni, Pb and Zn hyperaccumulators were used to calculate their ... research represents the first study that systematically investigated the phylogenetic patterns of As, Cd, Cu, Mn, Ni, Pb and Zn hyperaccumulators worldwide. We found a strong phylogenetic signal for As ...
Currently, I am working on aquatic toxicology, particularly heavy metals. Therefore I want to know the latest maximum permissible limits of these heavy metals (Cr, Mn, Fe, Co, Ni, Cu and Zn) in ...
The concentrations of Cu, Zn, Pb and Cr in urban soils in Nanjing (Table 2) have a wide range of values and have a marked vertical variability in soil profiles. The mean Cu concentration is triple the mean value of soils in China and twice as much as the natural background value of soils in the Nanjing area.
Simultaneous removal of Cr, Cu, Zn, and Cd by nano zero-valent iron modified sludge biochar in high salinity wastewater ... As one of the world's top polluting industries, the environmental accidents related with electroplating have gained increasing attention. ... Adsorption of Pb(II), Cr(III), Cu(II), Cd(II) and Ni(II) onto a vanadium mine ...
DOI: 10.1016/j.cej.2020.124862 Corpus ID: 216321535; Single metal isotherm study of the ion exchange removal of Cu(II), Fe(II), Pb(II) and Zn(II) from synthetic acetic acid leachate
This study aimed to (1) identify the current concentrations of six heavy metals (Cd, Cr, Cu, Zn, Ni, and Pb) in urban parks in Wuhan, Hubei Province, (2) analyze the pollution characteristics of soil heavy metals and …
Cd, Co, Cr, Pb and Zn concentrations in SGWD are higher (of one order of magnitude) than in seawater, while Cu and Ni show lower concentrations than in seawater 37. …
Introduction. Soils of heavily urbanized and industrialized areas are prone to acute contamination with different biologically harmful substances among which trace metals (i.e., elements having concentrations below 100 mg kg −1 (IUPAC 2006), e.g., Cd, Cu, Hg, Ni, Pb, Zn) play a major role.These metals are primarily delivered to soils via atmospheric deposition of …
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 human body and Environmental matrixes.
Five of the vegetables showed significantly higher concentrations (carrots, spinach, pea and lettuce all at p < 0.001 and French bean at p < 0.05) of Cd, Cu and Zn when grown in the metal-spiked soils compared with those in the untreated control soils. Onion exhibited the pattern of significance (p < 0.001) but only for Cd, Pb and Zn. The only ...
Highlights By-products applied in situ stabilize toxic elements in mine sediments. Red gypsum, sugar and ashes from biomass combustion were used. Changes in element solid phase speciation have been evaluated. All amendments reduced significantly the leachability of Zn and Cu. The treatment with a mixture of by-products also decreased the mobility of As.
IX offers an effective method for the recovery of these metals from a leachate. 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 ...
important factor to consider, as naturally acidic soils have been estimated to occupy 30% of the world's ice free land area. The overall objective of this thesis, which is based on papers I-IV, was to recommend tests that can be included in a triad approach at the screening level of ERA at metal (Pb and Zn) contaminated sites with acidic soils.
Previous studies report low concentrations of Cr, Cu, Pb, Ni, and Zn in carbonate rocks but hundreds of times these concentrations in soils (Yang et al., 2021a).This is attributable to geochemical processes during the weathering of carbonate bedrock (Yang et al., 2021a) in which two stages are recognized.The first comprises the leaching of carbonate rocks and the …
In this study, we compiled a database of eight potentially toxic elements (PTEs) Pb, Zn, Cd, As, Cr, Ni, Cu, and Mn in the soil of Pb–Zn smelting areas by screening the …
Several physiologically based extraction procedures have been proposed to estimate the fraction of the potentially toxic element content that would be bioaccessible in the human gastro-intestinal tract following accidental ingestion of soil. Many of these procedures are complex, they have been applied to a very limited range of soils, and most work has focussed …
However, compared to the gastric phase, the soil heavy metals extracted by the gastrointestinal phase of SG1 averagely dropped by 37.39 ± 50.93 % for Cu, 94.33 ± 3.84 % for Zn, and 57.95 ± 34.26 % for Pb. The extent of decline for Cu, Zn, and Pb in SG1 were not the least or greatest among these four designs, but they were much dissimilar to ...
The contents of EDTA-extractable Pb, Zn, and Cu were significantly reduced by 29.8–32.5%, 1.85–5.72%, and 30.0–32.9%, respectively, compared to the control. ... techniques for heavy-metal-contaminated soils in mining areas has garnered widespread attention from scholars worldwide. Remediating soils polluted by heavy metals has emerged as ...
Fine dust from copper smelting plants is an important source of raw materials for the extraction of various valuable metals. A specific feature of dust from copper smelting plants in Kazakhstan is their high arsenic content of up to 15%. This work shows the possibility of hydrometallurgical processing of fine dust from copper smelters, obtained during the …
The results show that the maximum simultaneous adsorption of metals equilibrated with 10 mg/L mixed Cd, Cu, Pb and Zn solution; and ≥ 90% Cd and Pb and over 70% Cu and Zn absorbed by ~ 1.0 g PRH at room temperature but typically the sorption efficiency dropped off past 20 mg/L concentration, which is likely due to saturation of sorption sites.
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 immobilization effect on …
The aim of the present study is to investigate the bioaccumulation and translocation of various heavy metals, notably copper, zinc, cadmium and lead, in the different plant organs of Trapa natans L. (the root, stem, and leaf) …
Mounting studies suggests that elevated concentrations of Cu, Pb, Zn, and Hg are often attributed to anthropogenic sources, and Pb has specially associated with mining, …
The study aims to investigate effect of earthworm activity on metal bioavailability in soils using their BSAF-metals. Based on a microcosmic laboratory experiment, epigeic species Amynthas corticis (A. corticis) and endogeic species Amynthas robustus (A. robustus) were cultured in two types of soils contaminated by Cd, Zn, Pb and Cu for 120 days. . Earthworm …
Abstract Soil pollution around Pb–Zn smelters has attracted widespread attention around the world. In this study, we compiled a database of eight poten-tially toxic elements (PTEs) Pb, Zn, Cd, As, Cr, Ni, Cu, and Mn in the soil of Pb–Zn smelting areas by screening the published research papers from 2000 to 2023.
The Jinchanghe Pb-Zn polymetallic deposit is a representative distal skarn deposit in the Baoshan block. Due to limited research on the sources of ore-forming metals and trace elemental geochemistry of sulfides, the sources and mineralization environments of the Jinchanghe skarn Pb-Zn polymetallic deposit are still controversial. In this study, copper and …
In this study, Density Functional Theory (DFT) calculations and experimental methods were adopted to evaluate MnO 2 with 5 different facets for their selective adsorption of Pb (II) from wastewater containing Cd (II), Cu (II), Pb (II), and Zn (II). The DFT calculations were performed to screen the selective adsorption capability of the facets and demonstrated that the …
The serum level of Se, Zn, Cu, Pb were quantified in graphite furnace conditions and flame conditions by utilizing an atomic absorption Perkin Elmer spectrophotometer 3030. The serum levels of Mg were measured by auto analyzer 1500 BT. The mean level of minerals (Zn, Pb, Cu, Mg, Se) in serum samples were compared in both cases and controls.
Unlike Cr, Cu, Cd, and Pb, the maximum Zn concentration was not found in plants at site HN-4 or HN-5, but in A. philoxeroides (365 mg kg −1) at site HN-3. Furthermore, Z. candida and C. dactylon at site HN-2 and even C. rotundus at Site HN-6 contained Zn concentrations greater than 200 mg kg −1, exceeding the highest Zn concentration of ...
Searching for a lab which can mesure: ICP screening: K, Mg, Ca, Sr, Ba, Ti, Zr, V, Cr, Mn, Fe, Ni, Cu, Zn, Cd, Al, Si, Pb, As and Sb present in ? Analytice laboratory ...
The pH value of the slag from the Zn smelting was 7.31. High concentrations of Pb, Cd, Cu, Zn, Cr, Ni, Mn, and As were detected in the slag, reaching 11,580 mg/kg, 120.4 mg/kg, 6402 mg/kg, 10,320 mg/kg, 154.5 mg/kg, 352.2 mg/kg, 1970 mg/kg, and 611 mg/kg, respectively (Table 4). The pH value of the control soil sample w…