Inorganic selenium speciation in environmental samples using selective electrodeposition coupled with electrothermal atomic absorption spectrometry

Najafi, Nahid Mashkouri; Seidi, Shahram; Alizadeh, Reza; Tavakoli, Hamed

doi:10.1016/j.sab.2010.02.017

Cited by 36 publications

(12 citation statements)

References 35 publications

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“…This is a consequence of the fact that selenium is widely used in the many branches of the industry from pharmacy to electronics [2,[4][5][6][7]. Furthermore, the electrochemistry itself gives many possibilities of producing selenium [8], to recover it from wastes [9], to analyze its concentration in solutions [10,11] and to carry out synthesis of various materials containing this element. The electrochemical properties of the H 2 SeO 3 -Se system are essential for understanding of the process of the electrodeposition of thin films or nanostructures of selenium [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Microgravimetric Studies of Selenium Electrodeposition Onto Different Substrates

Kowalik¹

2014

Archives of Metallurgy and Materials

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The mechanism of selenium electrodeposition from sulfuric acid solution on different substrates was studied with the electrochemical techniques. The cyclic voltammetry was combined with the quartz crystal microbalance technique to analyze selenium deposition process. The electrochemical reduction of selenous acid on gold, silver and copper electrodes was investigated. It was found that reduction of selenous acid is a very complex process and it strongly depends from the applied substrate. The voltammetric measurements indicate the range of potentials in which the process of reduction of selenous acids on the applied substrate is possible. Additionally, the microgravimetric data confirm the deposition of selenium and they reveal the mechanism of the deposition process.Keywords: selenium, electrochemistry, electrodeposition, cyclic voltammetry, electrochemical quartz crystal microbalance Przedstawione w niniejszej pracy wyniki badań opisują mechanizm elektrochemicznego osadzania selenu z roztworów siarczanowych na różnych podłożach. W celu dokładnej analizy zachodzących procesów elektrodowych w badaniach zastosowano technikę cyklicznej woltamperometrii połączoną z elektrochemiczną mikrowagą kwarcową. W pracy porównano procesy redukcji kwasu selenowego(IV) na elektrodach złotej, srebrnej i miedzianej. Dzięki zastosowanym technikom badawczym jednoznacznie określono zakres osadzania się selenu na wybranych podłożach oraz wskazano możliwy mechanizm przebiegających reakcji elektrodowych.

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Section: Introductionmentioning

confidence: 99%

Microgravimetric Studies of Selenium Electrodeposition Onto Different Substrates

Kowalik¹

2014

Archives of Metallurgy and Materials

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“…Inorganic selenium speciation in environmental samples has been carried out using selective electrodeposition coupled to ETAAS 134 . In this technique, Se IV and selenocystine are selectively electrodeposited onto a mercury electrode before removal and detection by ETAAS.…”

Section: Methods For the Determination And Speciation Of Mercury In Natural Watersmentioning

confidence: 99%

Atomic spectrometry update. Environmental analysis

Butler

Cairns

Cook

et al. 2011

J. Anal. At. Spectrom.

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“…The most widely used methods for removing selenium from wastewaters include ion-exchange, chemical precipitation, reverse osmosis, evaporation, membrane ltration, adsorption, and biosorption [4,9,10]. Among these technologies, adsorption onto bentonite is one of the most eective and reliable technologies for wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Investigation for Remediation of Selenium Aqueous Environment with Using Organic Pillared Bentonite by Radiotracer Technique

Tuğrul

Haciyakupoglu²,

Erenturk³

et al. 2015

Acta Phys. Pol. A

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In this study remediation of selenium ions from aqueous solutions was investigated using organic pillared bentonite as an adsorbent. Organic pillared bentonite was produced from Resadiye (Tokat, Turkey) bentonite using hexadecylpyridinium chloride and aluminum polyoxy-cations. All the experiments were carried out by tracing with selenium radioisotope. For the production of the radioactive selenium radioisotope, selenium dioxide was irradiated in the central thimble of ITU TRIGA Mark II Training and Research Reactor at Energy Institute of Istanbul Technical University. Radioactivity measurements carried out by the gamma-ray spectroscopy system were used to determine of selenium isotope. The relative importance of test parameters like concentration of adsorbate, pH of the solution and contact time on adsorption performance of organic pillared bentonite for selenium ion was studied. Evaluation of experiments for dierent parameters showed possibility of remediation of selenium from aqueous media by using organic pillared bentonite.

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Inorganic selenium speciation in environmental samples using selective electrodeposition coupled with electrothermal atomic absorption spectrometry

Cited by 36 publications

References 35 publications

Microgravimetric Studies of Selenium Electrodeposition Onto Different Substrates

Microgravimetric Studies of Selenium Electrodeposition Onto Different Substrates

Atomic spectrometry update. Environmental analysis

Investigation for Remediation of Selenium Aqueous Environment with Using Organic Pillared Bentonite by Radiotracer Technique

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