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YS/T 273.12-2006 English PDF (YST273.12-2006)

YS/T 273.12-2006 English PDF (YST273.12-2006)

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YS/T 273.12-2006: Chemical analysis methods and physical properties of cryolite. Part 12: The atomic absorption spectrophotometric method for the determination of calcium oxide content
This Part specifies the method for determination of calcium oxide content in cryolite. This Part applies to the determination of calcium oxide in cryolite. Determination range (mass fraction): ??1.25%. 2 Method summary Use perchloric acid to de-fluorinate the test portion; heat until the smoke of perchloric acid has evaporated, then use hydro

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