SU1377706A1 - Method of determining nitrites in melts of alkali metal nitrates - Google Patents

Method of determining nitrites in melts of alkali metal nitrates Download PDF

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Publication number
SU1377706A1
SU1377706A1 SU864034434A SU4034434A SU1377706A1 SU 1377706 A1 SU1377706 A1 SU 1377706A1 SU 864034434 A SU864034434 A SU 864034434A SU 4034434 A SU4034434 A SU 4034434A SU 1377706 A1 SU1377706 A1 SU 1377706A1
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SU
USSR - Soviet Union
Prior art keywords
alkali metal
melts
nitrites
determining
metal nitrates
Prior art date
Application number
SU864034434A
Other languages
Russian (ru)
Inventor
Сергей Павлович Распопин
Игорь Владимирович Коробейников
Николай Михайлович Климовских
Виктор Ильич Пятков
Виталий Павлович Денисов
Original Assignee
Уральский политехнический институт им.С.М.Кирова
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Application filed by Уральский политехнический институт им.С.М.Кирова filed Critical Уральский политехнический институт им.С.М.Кирова
Priority to SU864034434A priority Critical patent/SU1377706A1/en
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Publication of SU1377706A1 publication Critical patent/SU1377706A1/en

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  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

Изобретение относитс  к области физико-химического анализа солевых систем и может быть использовано при определении концентрации нитритов в расплавленных нитратах щелочных металлов . Целью изобретени   вл етс  увеличение экспрёссности анализа нитратных расплавов щелочных металлов на содержание нитрит-ионов. В качестве индикаторного электрода используют металл, пассивирующийс  (устойчивый ) в нитратных расплавах, например никель, молибден; непосредственно перед измерени ми очищают его, измерени  начинают с момента погружени  его в расплав, фиксируют максимальные значени  потенциала и по. калибровочной кривой определ ют кон центрацию нитритов щелочных металлов. 3 ил. СОThe invention relates to the field of physico-chemical analysis of salt systems and can be used in determining the concentration of nitrites in molten alkali metal nitrates. The aim of the invention is to increase the efficiency of the analysis of nitrate melts of alkali metals on the content of nitrite ions. As an indicator electrode, a passivated (stable) metal in nitrate melts is used, for example nickel, molybdenum; immediately before the measurements, they clean it, the measurements begin from the moment it is immersed in the melt, the maximum values of the potential and are recorded. the alkali metal nitrite concentration is determined by a calibration curve. 3 il. WITH

Description

со ч vjfrom h vj

Содержание но.мол, % Фи.2The content of no mol,% Fi.2

6s 6s

Шертание . % .JFelting % .J

Claims (1)

Формула изобретенияClaim Способ определения концентрации нитритов в расплавах нитратов щелочных металлов, включающий измерение потенциала индикаторного электрода, погруженного в расплав относительно электрода сравнения, отличающий с я тем, что, с целью повышения экспрессивности измерений, индикаторный электрод изготовляют из металла, пассивирующегося в нитратных расплавах, непосредственно перед погружением в расплав очищают его, а концентрацию нитритов определяют по максимальному значению потенциала.A method for determining the concentration of nitrites in melts of alkali metal nitrates, including measuring the potential of the indicator electrode immersed in the melt relative to the reference electrode, characterized in that, in order to increase the expressiveness of the measurements, the indicator electrode is made of metal passivated in nitrate melts, immediately before immersion they melt it into the melt, and the nitrite concentration is determined by the maximum value of the potential. Фие.2Fie. 2
SU864034434A 1986-03-07 1986-03-07 Method of determining nitrites in melts of alkali metal nitrates SU1377706A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU864034434A SU1377706A1 (en) 1986-03-07 1986-03-07 Method of determining nitrites in melts of alkali metal nitrates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU864034434A SU1377706A1 (en) 1986-03-07 1986-03-07 Method of determining nitrites in melts of alkali metal nitrates

Publications (1)

Publication Number Publication Date
SU1377706A1 true SU1377706A1 (en) 1988-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU864034434A SU1377706A1 (en) 1986-03-07 1986-03-07 Method of determining nitrites in melts of alkali metal nitrates

Country Status (1)

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SU (1) SU1377706A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР № 441506, кл. G 01 N 27/26, 1974 *

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