قائمة الطعام
In this study, Cu, Pb, Ni, Zn, Cd, Cr, As and Hg are considered to have chronic non-carcinogenic health risks, while Ni, Cd, Cr and As are considered to have carcinogenic risks (Ferreira-Baptista and De Miguel Citation 2005).
WhatsApp: +86 18221755073
The addition of illite improved the reducible fractions of Pb, Zn, and Cu by 5.4%, 2.1%, and 1.2%, respectively, compared to the control. The contents of Pb, Zn, Cu, and Cd in a reducible state in the co-cropping mode were higher compared to single species of Epipremnum aureum, and they were lower than single species of Ilex cornuta. The ...
WhatsApp: +86 18221755073
The range and averaged values of heavy metal concentrations (mg·kg −1) in surface sediments are: Cu, 15.58–793.52 (197.21); Zn, 11.21–72.09 (32.31); Pb, …
WhatsApp: +86 18221755073
In addition to the Huogeqi, other cases of orogenic-type base metal deposits have also been reported worldwide, including the Coeur d'Alene Cu-Ag deposit in the Western American Craton (Leach et al., 1988), the Elura Ag-Pb-Zn deposit in New South Wales, Australia (De Roo, 1989), the Tieluping Ag-Pb deposit in Henan Province, China (Chen et al ...
WhatsApp: +86 18221755073
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,
WhatsApp: +86 18221755073
Sediment-hosted Pb-Zn deposits dominate contained Pb-Zn metal resources with 141.6–345.1–3.9 Mt Pb-Zn-Cu, followed by Volcanogenic Massive Sulfide deposits with …
WhatsApp: +86 18221755073
To better understand metal binding by BIOS, Cu, Pb, and Zn, sorption rate and isotherm studies were conducted with synthetic two-line ferrihydrite and BIOS. ... J.L. Copper and Zinc Removal Using Biogenic Iron Oxides. In Proceedings of the World Environmental and Water Resources Congress 2012: Crossing Boundaries, Albuquerque, NM, USA, 20–24 ...
WhatsApp: +86 18221755073
The indexes of geo-accumulation (I geo) of eight heavy metals ranged from −3.62 to 7.67, while Zn, Pb, and Cd showed the highest environmental risk levels as the priority pollutants. The contamination levels of …
WhatsApp: +86 18221755073
UNMIX model has a strict data screening process based on an eigenvalue analysis. ... Zn, Pb and Cu in highly polluted soils were beyond the WHO (World Health Organization) limits (Chen et al., 2009a, Chen et ... Pb-Zn-Cu isotopic compositions gave further confirmation that irrigated river sediments and TSP were the primary anthropogenic source ...
WhatsApp: +86 18221755073
Sediment-hosted base metal deposits (including Mississippi-Valley type, "sedex" type, and redbed- and sediment-hosted stratiform Cu, amongst others) are found worldwide (Leach et al., 2005, Wang et al., 2014, Hoggard et al., 2020) and are important sources of metals that are increasingly in demand for sustainable development and the transition to a clean …
WhatsApp: +86 18221755073
Pollution control policies (PCP) have been implemented in some e-waste dismantling areas in China to curb metal contamination since 2012. We investigated the …
WhatsApp: +86 18221755073
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, …
WhatsApp: +86 18221755073
Screening and Evaluation of the Bioremediation Potential of Cu/Zn-Resistant, Autochthonous Acinetobacter sp. FQ-44 from Sonchus oleraceus L September 2016 Frontiers in Plant Science 7(755)
WhatsApp: +86 18221755073
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 published …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
To analyze contamination levels, spatial distribution characteristics, bioavailability, and risks of heavy metals (Cr, Ni, Cu, Zn, As, Cd, Hg, and Pb), 65 road dust samples were …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
The pollution status of ten potentially toxic elements (PTEs), isotopic compositions (Cu, Zn, Pb), and the potential ecological risk posed by them were investigated in the PM10 fraction of road dust in Busan Metropolitan city, South Korea. Enrichment factors revealed extremely to strongly polluted levels of Sb, Cd, Zn, Pb, and Cu in the PM10 fraction of road …
WhatsApp: +86 18221755073
Pearson's correlation and redundancy analysis show significant positive correlations of Pb, Zn, and Cu with χ l f (r = 0.51–0.53) and Mn and Fe with χ f d (r = 0.50–0.53), while Pb, Zn, Cu, and As metals were shown to be …
WhatsApp: +86 18221755073
Methods: The blood levels of lead (Pb), cadmium (Cd), mercury (Hg), selenium (Se), copper (Cu) and zinc (Zn) and the results of the cognitive function tests were extracted from 811 elderly ...
WhatsApp: +86 18221755073
Zn smelting activities involving multiple heavy metals, including Pb, Cd, Zn, Cu, Cr, Ni, Mn, and As, led to their accumulation in the soils. Pb, Cd, and As were the most contaminated elements, with 93.6%, 90.3% and 48.4% …
WhatsApp: +86 18221755073
T D ACCEPTED MANUSCRIPT 1 1 Ion Exchange Removal of Cu(II), Fe(II), Pb(II) and Zn(II) from 2 Acid Extracted Sewage Sludge – Resin screening in weak acid 3 media 4 James P. Bezzina1, Laura R. Ruder1, Robert Dawson2, Mark D. Ogden1 5 1Separation and Nuclear Chemical Engineering Research (SNUCER), Department of Chemical and 6 Biological Engineering, …
WhatsApp: +86 18221755073
Bi-plots of Cu, Zn, and Pb isotopic compositions indicated that tires can be clearly discriminated from natural-origin and other non-exhaust traffic emission sources. ... Discover the world's ...
WhatsApp: +86 18221755073
In general, Cu-Zn sulfide ores consisting of a Cu/Zn ratio of 0.4–1:1 (w / w) [16,17,18,19,20] are processed by a two-step flotation: (i) the selective flotation of Cu minerals while depressing sphalerite using zinc sulfate (ZnSO 4)—a sphalerite depressant—and other gangue minerals such as pyrite (FeS 2) and silicate minerals under ...
WhatsApp: +86 18221755073حقوق النشر ©2000- 2024 شركة شنغهاي زينيث
