Schnelle thermometrische Siliciumbestimmung in Gußeisen und Stahl

Jiří Brandštetr; Josef Huleja; István Sajó; Hasso Strauß

doi:10.1007/BF00480609

Schnelle thermometrische Siliciumbestimmung in Gußeisen und Stahl

Translated title of the contribution: Rapid thermometric determination of silicon in cast iron and steel

Jiří Brandštetr
, Josef Huleja
, István Sajó
, Hasso Strauß

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A method for the rapid determination of silicon by direct injection enthalpimetry in steel and cast iron was elaborated. After dissolution of the sample and dehydration of silicic acid in perchloric acid, the separated silicium oxide hydrogel is dissolved in potassium hydroxide solution and after acidifying, hydrofluoric acid reagent is added. Formation of the complex anion [SiF₆]^2- and the simultaneously proceeding precipitation of insoluble K₂SiF₆ are exothermic reactions. The amount of heat released is directly proportional to the silicon content and is measured by a thermistor. Digital display of the Wheatstone bridge millivoltmeter permits to read the Si content in the sample directly in percent.

Translated title of the contribution	Rapid thermometric determination of silicon in cast iron and steel
Original language	German
Pages (from-to)	385-390
Number of pages	6
Journal	Analytical and Bioanalytical Chemistry
Volume	304
Issue number	5
DOIs	https://doi.org/10.1007/BF00480609
State	Published - Jan 1980
Externally published	Yes

Keywords

Best. von Silicium in Gußeisen, Stahl
Direktmessung
Thermometrie

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10.1007/BF00480609

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title = "Schnelle thermometrische Siliciumbestimmung in Gu{\ss}eisen und Stahl",

abstract = "A method for the rapid determination of silicon by direct injection enthalpimetry in steel and cast iron was elaborated. After dissolution of the sample and dehydration of silicic acid in perchloric acid, the separated silicium oxide hydrogel is dissolved in potassium hydroxide solution and after acidifying, hydrofluoric acid reagent is added. Formation of the complex anion [SiF6]2- and the simultaneously proceeding precipitation of insoluble K2SiF6 are exothermic reactions. The amount of heat released is directly proportional to the silicon content and is measured by a thermistor. Digital display of the Wheatstone bridge millivoltmeter permits to read the Si content in the sample directly in percent.",

keywords = "Best. von Silicium in Gu{\ss}eisen, Stahl, Direktmessung, Thermometrie",

author = "Ji{\v r}{\'i} Brand{\v s}tetr and Josef Huleja and Istv{\'a}n Saj{\'o} and Hasso Strau{\ss}",

year = "1980",

month = jan,

doi = "10.1007/BF00480609",

language = "German",

volume = "304",

pages = "385--390",

journal = "Analytical and Bioanalytical Chemistry",

issn = "0016-1152",

publisher = "Springer Science and Business Media Deutschland GmbH",

number = "5",

}

TY - JOUR

T1 - Schnelle thermometrische Siliciumbestimmung in Gußeisen und Stahl

AU - Brandštetr, Jiří

AU - Huleja, Josef

AU - Sajó, István

AU - Strauß, Hasso

PY - 1980/1

Y1 - 1980/1

N2 - A method for the rapid determination of silicon by direct injection enthalpimetry in steel and cast iron was elaborated. After dissolution of the sample and dehydration of silicic acid in perchloric acid, the separated silicium oxide hydrogel is dissolved in potassium hydroxide solution and after acidifying, hydrofluoric acid reagent is added. Formation of the complex anion [SiF6]2- and the simultaneously proceeding precipitation of insoluble K2SiF6 are exothermic reactions. The amount of heat released is directly proportional to the silicon content and is measured by a thermistor. Digital display of the Wheatstone bridge millivoltmeter permits to read the Si content in the sample directly in percent.

AB - A method for the rapid determination of silicon by direct injection enthalpimetry in steel and cast iron was elaborated. After dissolution of the sample and dehydration of silicic acid in perchloric acid, the separated silicium oxide hydrogel is dissolved in potassium hydroxide solution and after acidifying, hydrofluoric acid reagent is added. Formation of the complex anion [SiF6]2- and the simultaneously proceeding precipitation of insoluble K2SiF6 are exothermic reactions. The amount of heat released is directly proportional to the silicon content and is measured by a thermistor. Digital display of the Wheatstone bridge millivoltmeter permits to read the Si content in the sample directly in percent.

KW - Best. von Silicium in Gußeisen, Stahl

KW - Direktmessung

KW - Thermometrie

UR - https://www.scopus.com/pages/publications/34250253771

U2 - 10.1007/BF00480609

DO - 10.1007/BF00480609

M3 - Article

AN - SCOPUS:34250253771

SN - 0016-1152

VL - 304

SP - 385

EP - 390

JO - Analytical and Bioanalytical Chemistry

JF - Analytical and Bioanalytical Chemistry

IS - 5

ER -

Schnelle thermometrische Siliciumbestimmung in Gußeisen und Stahl

Abstract

Keywords

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