... along with the broad range of Cd and Zn isotope data for sphalerite, which are among the lightest and heaviest yet reported for a sulfide deposit, the isotopic datasets are consistent with low-temperature biogenic processes associated with syngenetic deposition of sulfides. Cadmium isotope compositions...

...Huan Liu; Xiancai Lu; Xiangjie Cui; Lijuan Zhang; Ting-Shan Chan Abstract Hydroxyapatite (HAp) has been widely used to remove cadmium (Cd) in contaminated water and soils via Cd-Ca substitution. The Cd incorporation into HAp affects its structure; however, the detailed mechanism remains unclear...

... and causing pollution of the soil environment. Main reagents included a standard solution containing single elements, such as cadmium, copper, lead, and chromium (concentration: 1,000 μm/mL), nitric acid (analytically pure), hydrogen fluoride (analytically pure), HCl (analytically pure), HClO 4...

... for quantifying the timing and severity of deoxygenation and nutrient cycling in Earth's past. The resilience of isotopic data to thermal alteration of the host sediments over millions of years of burial is, however, largely unknown. We present molybdenum, uranium, cadmium, and zinc stable-isotope data from two...

... l −1 ), nickel (240  μ g l −1 ), copper (129  μ g l −1 ), cobalt (63  μ g l −1 ), molybdenum (10.5  μ g l −1 ), and cadmium (1.9  μ g l −1 ). Copper concentrations are highest in the Red Fork of Twin Lakes Creek, whereas concentrations of rare-earth elements (REEs...

.... Company Axios Advanced, The Netherlands) is listed in Table 1 . The cadmium nitrate (Cd(NO 3 ) 2 ), sodium hydroxide (NaOH) and potassium hydroxide (KOH) used in this study were analytical reagent (AR) grade and were purchased from Sinopharm Chemical Reagent Co., Ltd (China). NaOH and KOH were dissolved...

... as a significant factor either for country rock composition, where mafic rock associations represented by basaltic sheets and mafic basement rocks are common rock units in the study area, or the existence of iron ore mineralization, where Fe is as an essential component in Um Bogma Mn ore deposit. (3) Cadmium...

...–Mn oxide fractions for Mo in soils reached 14.2, 5.3 and 24.4%, respectively. Cadmium existed in soils mainly in the exchangeable (6.3%), carbonate (25.7%) and Fe–Mn oxide (16.7%) fractions. The results indicated that Mo and Cd had a potential ecological risk to the environment. Contrary to the other...

... from the results of the crystal-structure analysis. No elements other than those reported were detected. Analytical data are given in Table 1 . voudourisite lazaridisite new mineral cadmium sulfates Lavrion Mining District Greece The Lavrion Mining District, Greece, is part...

... in the laboratory from propagules in the sediment samples. Two metabolically essential trace elements, nickel, and zinc, and two non-essential elements, arsenic and cadmium were used to represent both types of heavy metal. Experimental conditions were held constant while varying only the metal concentrations...

... cadmium trace elements sphalerite synthetic minerals X-ray absorption spectroscopy EXAFS Indium is a critical metal that is of high demand in high-tech industries. It is used worldwide for the production of flat-panel displays and touchscreens, in the manufacture of photovoltaic cells...

...% for Pb. Cadmium was the most geoavailable element (1%) in less oxidized tailings. BCR fractionation showed different mobilities among elements and samples from each deposit. Less oxidized tailings could become more hazardous with time, mobilizing mainly Zn, Cd and As. Geoavailable As, Fe and Cd surpass...

...Jesús Iván Martinez-Costa; Roberto Leyva-Ramos; Erika Padilla-Ortega Abstract Toxic pollutants such as diclofenac (DCF) and cadmium(II) have been detected together in various water sources; these compounds have adverse effects on human health. The objective of the present study was to investigate...

... (here and in Figs. 7 & 8 ), Road River - Canol transitional zone (Fraser & Hutchison, 2017). (See Fig. 4 for colour-coded lithology, and supplementary material for data scatterplots.) Zinc and cadmium show enrichments in the Bluefish, Dodo Canyon and Prohibition Creek members...

.... The iron oxyhydroxide contains anomalously high Se, and anomalously high Se was measured in water ponded where the ochre precipitated, although not in flowing groundwater. Other trace elements including cadmium and thallium also occur at concentrations higher than in other ochres. Given the widespread...

... deposition. Electron microprobe and LA-ICP-MS analyses reveal complex chemical zoning in the sphalerites together with coupling of two main groups of trace elements: copper, germanium, and gallium; and iron and cadmium. The zoning is interpreted in terms of substitution mechanisms using different equations...

... into the complexing mechanisms of heavy metal cations on edge surfaces of clay minerals. Binding Site Cadmium Cation Complexation Edge Surface First-Principles Molecular Dynamics Free Energy Clay minerals are ubiquitous in soils, sediments, and aquifers ( Bergaya and Lagaly, 2013 ), and play...