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100			_a20161107a2016 k y0engy50 ba
101	0		_aeng
102			_aUS
135			_adrcn ---uucaa
181		0	_ai
182		0	_ab
200	1		_aMethods of the determination of inorganic arsenic species by stripping voltammetry in weakly alkaline media _fE. A. Zakharova [et al.]
203			_aText _celectronic
300			_aTitle screen
320			_a[References: 34 tit.]
330			_aTwo methods are considered for the direct determination of trace amounts of As(III) and As(V) in solutions by stripping voltammetry (SVA) using an ensemble of gold microelectrodes (Au-MEA) previously developed by the authors of this paper. In both methods, analyzing a mixture of As(III) and As(V), analysts first record an SVA signal of As(III) in a supporting Na2SO3electrolyte. To record an analytical SVA signal of As(V), in the first method one should use the reduction of As(V) to As(III) on the surface of an Au-MEA catalyzed by the system Mn(II)/Mn(0) and followed by the formation of As(0) and its anode dissolution. In the second method, the photoreduction of As(V) to As(III) in a Na2SO3 solution is conducted under UV irradiation followed by the reduction of As(III) to As(0) and its electrooxidation on Au-MEA. The two methods are compared taking into account their performance characteristics and interfering ions. To improve the reliability of the results of analysis at an insignificant increase in its cost, we propose the consecutive use of both methods. The procedures are simple and rapid, do not require the removal of dissolved oxygen or toxic reactants, and can be used for the analysis of aqueous solutions at the place of sampling. The results of analyses of real objects, snow, river water, and process solutions are presented.
333			_aРежим доступа: по договору с организацией-держателем ресурса
461			_tJournal of Analytical Chemistry
463			_tVol. 71, iss. 8 _v[P. 823-833] _d2016
610	1		_aтруды учёных ТПУ
610	1		_aэлектронный ресурс
610	1		_aвольтамперометрия
610	1		_aУФ-облучение
610	1		_aпитьевые воды
610	1		_aмышьяк
701		1	_aZakharova _bE. A. _cchemist _csenior research fellow at the Tomsk Polytechnic University, candidate of chemical Sciences _f1938- _gElsa Arminana _2stltpush _3(RuTPU)RU\TPU\pers\33332
701		1	_aAntonova _bS. G. _cchemist _cassociate Professor of Tomsk Polytechnic University, candidate of chemical Sciences _f1984- _gSvetlana Gennad'evna _2stltpush _3(RuTPU)RU\TPU\pers\37488
701		1	_aNoskova _bG. N. _gGalina Nikolaevna
701		1	_aSkvortsova _bL. N. _gLidiya Nikolaevna
701		1	_aTe _bA. V. _gAnastasia Vladimirovna
712	0	2	_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра физической и аналитической химии (ФАХ) _h94 _2stltpush _3(RuTPU)RU\TPU\col\18656
801		2	_aRU _b63413507 _c20161107 _gPSBO
856	4		_uhttp://dx.doi.org/10.1134/S1061934816080177
942			_cCF