نتایج جستجو برای: copper extraction

تعداد نتایج: 246596  

Journal: :Journal of environmental monitoring : JEM 2010
Junhui Li Ying Lu Hojae Shim Xianglian Deng Jin Lian Zhenglei Jia Jianhua Li

To investigate the mobility and availability of metals from soil to plant, concentrations of zinc (Zn), copper (Cu), lead (Pb), cadmium (Cd), mercury (Hg) and arsenic (As) in topsoils and plants (lettuce, scallion, celery, tomato, carambola, wampee and longan) collected from the area around a petrochemical complex in Guangzhou, China, were analyzed. The modified European Community Bureau of Ref...

Journal: :Acta chimica Slovenica 2011
Shahab Shariati Mostafa Golshekan

In the present study, a simple and efficient extraction method based on dispersive liquid-liquid microextraction prior to UV-Vis spectrophotometry was developed for the preconcentration and determination of copper ions in environmental samples. Briefly, cupric ions (Cu II) were reduced to cuprous (Cu I) with addition of hydroxyl amine hydrochloride and formed hydrophobic chelates with neocuproi...

Journal: :Green Chemistry 2022

Intensified solvometallurgical process by combining solvoleaching and solvent extraction to recover cobalt from lithium oxide, in presence of current collectors aluminium copper.

Journal: :Acta poloniae pharmaceutica 2011
Anna Lutka Małgorzata Maruszewska

It were established and validated the conditions of voltammetric determination of copper in pharmaceutical preparations. The three selected preparations: Zincuprim (A), Wapń, cynk, miedź z wit. C (B), Vigor complete (V) contained different salts and different quantity of copper (II) and increasing number of accompanied ingredients. For the purpose to transfer copper into solution, the samples o...

Journal: :journal of chemical health risks 0
j. abolhasani department of chemistry, faculty of science, tabriz branch, islamic azad university, tabriz, iran m. amjadi department of analytical chemistry, faculty of chemistry, university of tabriz, tabriz, iran e. ghorbani kalhor department of chemistry, faculty of science, tabriz branch, islamic azad university, tabriz, iran

a sensitive, selective and effective ionic liquid-based single drop microextraction technique was developed by using ionic liquid, 1-hexyl-3-methylimidazolium hexafluorophosphate, c6mimpf6, coupled with electrothermal atomic absorption spectrometry (etaas) for the determination of copper and silver in environmental samples. dithizone was used as chelating agent. several factors that influence t...

Journal: :int. journal of mining & geo-engineering 2013
hadi abdollahia ziaedine shafaei mohammad noaparast z. manafi n. aslan

bioleaching processes for extraction of cu and mo from molybdenite cons. are more environmentally friendly and consume less energy than conventional technologies, yet less economically efficient. one necessary step towards arriving at a cost-effective bioleaching process is using appropriate methodology to optimize pertinent factors in such processes. to this end, the present study employed res...

2008

ID: 8312 Title: The use of dual-energy CT images for Monte Carlo treatment planning: material extraction and metal artifact reduction Purpose: To investigate the feasibility of dual-energy CT-based material extraction (DECT) for Monte Carlo (MC) dose calculations, to evaluate metal streaking artifact reduction using DECT and to propose a novel scanning technique for motion artifacts reduction. ...

2017
Hannes P L Gemoets Gabriele Laudadio Kirsten Verstraete Volker Hessel Timothy Noël

Described herein is an effective and practical modular flow design for the meta-selective C-H arylation of anilines. The design consists of four continuous-flow modules (i.e., diaryliodonium salt synthesis, meta-selective C-H arylation, inline copper extraction, and aniline deprotection) which can be operated either individually or consecutively to provide direct access to meta-arylated aniline...

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