An effective separation process of arsenic, lead, and zinc …
Separation of arsenic and valuable metals (Pb, Zn, Cu, Bi, Sn, In, Ag, Sb, etc.) is a core problem for effective utilization of high arsenic-containing copper smelting ashes (HACSA). This study developed an effective separation process of arsenic, lead, and zinc from HACSA via alkali leaching followed by sulfide precipitation.
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Ion-exchange separation of eight arsenic compounds by …
Separation of eight arsenic compounds was achieved using an anion- and a cation-exchange column for anionic and cationic arsenic compounds, respectively. Baseline separation of anionic compounds was obtained using standard procedures; for the cationic compounds the separation conditions were tested for compatibility with the …
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Separation of arsenic from lead smelter ash by acid …
Arsenic is used associated with metal ores and recognized as a harmful element in non-ferrous metal smelting process [1], [2], [3]. In the smelting process of copper, lead and zinc, a large amount of arsenic-containing hazardous wastes such as smelter ash are produced [4], [5]. Arsenic content in smelter ash ranged from 5% to …
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Arsenic speciation analysis: A review with an …
This review summarizes the main separation techniques used in arsenic speciation analysis, describes the mechanisms of how arsenic species are separated, and highlights important considerations for separating specific arsenic species.
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(PDF) Arsenic Removal and Iron Recovery from Arsenic
The beneficiation of iron minerals and arsenic-bearing minerals from arsenic-bearing iron ores with a calcification-magnetizing roasting and low-intensity magnetic separation (CMR-LMS) process is ...
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Separation of arsenic and extraction of zinc and copper …
Furthermore, arsenic separation from HACSD by two-stage countercurrent alkali leaching in NaOH-Na 2 S media and then extraction of zinc and copper from the alkali leaching residues with one-stage sulfuric acid leaching were studied to examine performance of flowsheet of this process.
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(PDF) Separation of arsenic species in aqueous solutions …
The procedure for the separation of arsenic species is shown in Fig. 1. 3.2. Removing arsenic species from MC∗ Because GFAAS method requires liquid samples, the adsorbed arsenic species have to be transferred from loaded MC∗ to appropriate solution for subsequent determination. In our previous studies we have not resolved the problem …
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Separation of arsenic species in aqueous solutions and
Latva et al. proposed the procedure for separation and speciation of inorganic and organic arsenic species from aqueous solution using cerium-, lanthanum-, zirconium-, vanadium-, and/or iron ...
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Determination of arsenic species in fish, crustacean and …
A Hamilton PRP-X100 anion-exchange HPLC system employing a step elution has been used successfully to achieve separation of the arsenic species. A nitric acid microwave digestion procedure, followed by carrier gas nitrogen addition- (N2)-ICP-MS analysis was used to measure total arsenic in sample digests and extracts. The arsenic speciation of ...
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A green process for arsenic removal and tungsten
This paper presents a green full process for efficient arsenic removal and tungsten recovery from hazardous TRW, focusing on the separation and recovery of arsenic and tungsten from leach solution of TRW via solvent extraction with N235 followed by H 2 S precipitation. The results showed that the W recovery was nearly and As, …
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Separation of arsenic species in aqueous solutions and …
A procedure was developed for the separation and independent determination of nanogram quantities of As(V), As(III), dimethylarsinic acid (DMAA) and phenylarsonic acid (PAS) in aqueous solutions. Arsenic species were collected one by one from the same sample solution by adsorbing them onto different metal-loaded activated …
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Development and validation of an SPE HG-AAS method for …
The present paper describes a novel method for the quantitative determination of inorganic arsenic (iAs) in food and feed of marine origin. The samples were subjected to microwave-assisted extraction using diluted hydrochloric acid and hydrogen peroxide, which solubilised the analytes and oxidised arsenite (AsIII) to …
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New procedures for arsenic speciation: A review
A single-step magnetic separation procedure that can remove arsenic from contaminated water is clearly a desirable goal. A kind of water dispersible …
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New procedures for arsenic speciation: a review
The performances of various sample pretreatment techniques including solid phase extraction, liquid-liquid extraction, hydride generation, liquid chromatography and …
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Critical evaluation of hybrid metal–organic framework
Critical evaluation of hybrid metal–organic framework composites for efficient treatment of arsenic–contaminated solutions by adsorption and membrane–separation process. Author links open overlay panel Duc Anh Nguyen, Duc Viet Nguyen, Ganghyeon Jeong, Nosheen Asghar, Am Jang. Show more.
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An effective separation of toxic arsenic from aquatic …
The initial intensity of arsenic ions performs a significant role in the elimination of arsenic ions, providing an essential driving force among the solid and liquid phases to resolve the mass transfer resistance of arsenic ions. The procedure was carried out to analyze the impact of the initial intensity of arsenic ions on various ...
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An effective separation process of arsenic, lead, and zinc …
Separation of arsenic and valuable metals (Pb, Zn, Cu, Bi, Sn, In, Ag, Sb, etc.) is a core problem for effective utilization of high arsenic-containing copper smelting ashes (HACSA). This study developed an effective separation process of arsenic, lead, and zinc from HACSA via alkali leaching follow …
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Speciation Analysis of Arsenic Compounds by HPLC …
A high-performance liquid chromatography (HPLC) in combination with inductively coupled plasma mass spectrometry (ICP-MS) as an elemental specific …
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Separation and recovery of arsenic, germanium and
Arsenic is one of the main poisonous elements and it is transferred into As 2 O 3 vapor during the process of coal combustion (Wang et al., 2018). Several As removal technologies have been proposed including sorbents in metal oxide, calcium or carbon compounds ( Zhang et al., 2015 ; López-Antón et al., 2007 ; Chen et al., 2015 ).
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Efficient separation of arsenic species of oxyanion As (III) …
Device is fabricated for the separation of Arsenic(V) from Arsenic (III) in field studies. ... On the other hand, separation process like adsorption (Hao et al., 2018), ion exchange resins (Chiavola et al., 2015) and solvent extraction (Iberhan and Wiśniewski, 2003) have their own disadvantages like production of by-product which needs further ...
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Review of analytical techniques for arsenic detection and …
The importance of arsenic determination is well-recognised and emphasised by the extensive studies carried out in this space e.g. "Arsenic round the world: a review". 7,10 A plethora of detection methods have been developed and reported and some are capable of detecting arsenic below the WHO guideline value of 10 ppb . 11,12 The most ...
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New procedures for arsenic speciation: A review
PDF | On Jul 1, 2014, Ming-Li Chen and others published New procedures for arsenic speciation: A review | Find, read and cite all the research you need on ResearchGate
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Separation of arsenic from lead smelter ash by acid
The proposed novel process has a remarkable effect on the separation of arsenic in arsenic–containing copper dust with complicated composition and has certain application prospects. View Show ...
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On-site Separation of Arsenic Species in Natural Waters …
The proposed procedure was applied to the on-site separation of arsenic species from natural waters. Keywords: arsenic species, on-site separation, tandem ion-exchange columns, natural waters, ICP-MS. DOI: 10.1134/S10652. Arsenic displays extreme toxicity and is a class A human carcinogen [1].
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Separation of arsenic species in aqueous solutions and …
The detection limit (DL) of arsenic was determined for each arsenic species with a low concentration standard, which gave a signal of about 0.0200 A. Blank and standard solutions (20 μg As/l) were taken through the separation procedure described earlier. Ten replicate measurements were made, alternating between the blank and the …
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Separation of arsenic and extraction of zinc and copper …
The metals leaching behaviors, phase transformations and microstructure of metal compounds during the leaching processes were confirmed by X-ray diffraction and scanning electronic microscopy/energy dispersive spectroscopy. The proposed process offered high separation efficiency of arsenic, zinc and copper, as well as low …
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Speciation Analysis of Arsenic Compounds by HPLC-ICP-MS: …
3.1. Separation of Five Species of Arsenic on PRP-X100 Strong Anion-Exchange Column. For separation of five arsenic species, many studies used HPLC-ICP-MS as an effective method. Because of ionic compounds, either anion-exchange chromatography or ion pair chromatography has been employed for speciation of …
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Separation methods applied to arsenic speciation
The separation of arsenic species was carried on anion exchange column (Hamilton PRP-X100, 1: 20 ... Derivatization is a process of chemically modifying a species to produce a new species which has properties more suitable for subsequent analysis [81]. The commonly used derivatizing agents for arsenic speciation include thioglycol …
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Arsenic Speciation Techniques in Soil Water and Plant: An
5. Separation techniques of arsenic speciation. Usually, two main techniques, namely chromatography (gas and liquid) and capillary electrophoresis …
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An experimental comparison: Horizontal evaluation of …
In the physical separation process of magnetic separation, arsenic enters IC with its carrier. Magnetic iron oxide and residual metallic matte may be used as a carrier of arsenic and contribute to the distribution and transfer of arsenic. Compared with the flotation magnetic separation method, the arsenic content in the tailings in the reducing ...
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