GB - Chinese national standards

Methods for chemical analysis of zirconium and zirconium alloys—Part 20Determination of hafnium content—Inductively coupled plasma atomic emission spectrometry

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Methods for chemical analysis of zirconium and zirconium alloys—Part 21Determination of hydrogen content—Inert gas fusion-infrared absorption or thermal conductivity method

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Methods for chemical analysis of zirconium and zirconium alloys—Part 22Determination of oxygen and nitrogen contents—Inert gas fusion-infrared absorption and thermal conductivity method

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Zirconium and zirconium alloys--Determination of nitrogen content--Distillation-Nessler reagent spectrophotometric method

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Methods for chemical analysis of zirconium and zirconium alloys—Part 24Determination of carbon content—Infrared absorption method after high frequency combustion

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Methods for chemical analysis of zirconium and zirconium alloys—Part 25Determination of niobium content—2-(5-bromo-2-pyridylazo)-5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry

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Methods for chemical analysis of zirconium and zirconium alloys—Part 26:Determination of alloying and impurity elements content—Inductively coupled plasma atomic emission spectrometry

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Methods for chemical analysis of zirconium and zirconium alloys—Part 27Determination of trace impurities content—Inductively coupled plasma mass spectrometry

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Methods for chemical analysis of zirconium and zirconium alloysPart 3Determination of nickel contentDimethyglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry

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Methods for chemical analysis of zirconium and zirconium alloysPart 4Determination of chromium content—Diphenylcarbazide spectrophotometry and inductively coupled plasma atomic emission spectrometry

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