Differences of Fluorine in Cements Determined by Photometric Methods after Distillation and Pyrolysis

Autor:	Nobutoshi Kiba, Toshihisa Maruta, Takeshi Yamane, Noguchi Yasunari
Rok vydání:	2008
Předmět:	Cement law Chemistry Analytical chemistry Fluorine Standard test chemistry.chemical_element Distillation Pyrolysis Analytical Chemistry law.invention
Zdroj:	Analytical Sciences. 24:673-675
ISSN:	1348-2246 0910-6340
DOI:	10.2116/analsci.24.673
Popis:	Using a spectrophotometric method after distillation separation is a standard test method widely employed for the determination of fluorine (F) in cement. Using a flow injection (FI) method after pyrolysis separation for quantification of fluorine in cement has recently been developed. Differences between the fluorine content values obtained by each method have been noted. This paper documents the differences between fluorine content (distillation F) measured spectrophotometrically after distillation and that (pyrolysis F) determined using the FI method after pyrolysis for fourteen commercial Portland cements and identifies a factor contributing to the differences between distillation F and pyrolysis F values. A highly significant relationship existed between distillation F and pyrolysis F values for fourteen cements (r2 = 0.998, p < 0.001).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05954cb0d308adb30184f59eb830d76b https://doi.org/10.2116/analsci.24.673 Zobrazit plný text záznamu Full text from SpringerLink