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	GB/T 12690.5-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method--Determination of Co、M - 英文版
	GB/T 12690.4-2003 Chemical analysis methods for non-rare earth impurities ofrare earth metals and their oxides--Determination of oxygen and nitrogen content--Impulse-infrared and impulse-thermal conductance absorption method - 英文版
	GB/T 12690.13-2003 Chemical analysis methods for non-rareearth impurities of rare earth metals and their oxides--Determination of molybdenum and tungsten content--Induct-ively coupled plasma atomic emission spectrographic method and inductively coupled plasma mass spectrum - 英文版
	GB/T 12690.12-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of thorium content--Arsenazo III spectrophotometric method and inductively coupled plasma mass spectrum method - 英文版
	GB/T 12690.11-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of magnesium content--Flame atomic absorptionspectrometric method - 英文版
	GB/T 12690.10-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of phosphorus content by molybdenum blue spectrophotometric method - 英文版
	GB/T 223.78-2000 Methods for chemical analysis of iron，steel and alloy--Curcumin spectrophotometric method for the determination of boron content - 英文版
	GB/T 223.34-2000 Methods for chemical analysis of iron，steel and alloy--The determination of hydrochloric acid-insoluble content of iron powders - 英文版
	GB/T 223.8-2000 Methods for chemical analysis of iron，steel and alloy--The sodium fluoride separation--EDTA titration method for the determination of aluminium content - 英文版
	GB/T 223.14-2000 Methods for chemical analysis of iron，steel and alloy--The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content - 英文版
	GB/T 223.13-2000 Methods for chemical analysis of iron，steel and alloy--The ammonium ferrous sulfate titrationmethod for the determination of vanadium content - 英文版
	GB/T 4702.1-1997 Methods for chemical analysis of chromium metal--The ammonium ferrous sulfate volumetric method for thedetermination of chromium content - 英文版
	GB/T 223.74-1997 Methods for chemical analysis of iron，steel and alloy--The combustion gravimetric/gas-volumetric method for the determination of non-combined carbon content - 英文版
	GB/T 223.71-1997 Methods for chemical analysis of iron，steel and alloy--The gravimetric method after combustion in the pipe furnace for the determination of carbon content - 英文版
	GB/T 223.68-1997 Methods for chemical analysis of iron，steel and alloy--The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content - 英文版
	GB/T 223.60-1997 Methods for chemical analysis of iron，steel and alloy--The perchloric acid dehydration gravimetric method for the determination of silicon content - 英文版
	GB/T 223.6-1994 Methods for chemical analysis of iron，steel and alloy--The neutralization titrimetric method for the determination of boron content - 英文版
	GB/T 223.50-1994 Methods for chemical analysis of iron，steel and alloy--The phenylfluorone-CTMAB direct photometric method for the determination of tin content - 英文版
	GB/T 223.49-1994 Methods for chemical analysis of iron，steel and alloy--Extraction separation-chlorophosphonazo mA spectro-photometric method for the determination of the total rare earth content - 英文版
	GB/T 223.47-1994 Methods for chemical analysis of iron，steel and alloy--The carrier precipitation-molybdenumblue potometric method for the determination of antimony content - 英文版
	GB/T 223.36-1994 Methods for chemical analysis of iron，steel and alloy--The neutral titration method for the determination of nitrogen content after distillation separation - 英文版
	GB/T 223.33-1994 Methods forchemical analysis of iron，steel and alloy--The chlorophosphonago mA photometric method for the determination of cerium content after extraction separation - 英文版
	GB/T 223.32-1994 Methods for chemical analysis of iron，steel and alloy--The hypophosphite reduction-iodimetric method for the determination of arsenic content - 英文版
	GB/T 223.30-1994 Methods for chemical analysis of iron，steel and alloy--The arsenazo Ⅲspectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid - 英文版
	GB/T 223.77-1994 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrometric method for the determination of calcium content - 英文版
	GB/T 223.76-1994 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrometric method for the determination of vanadium content - 英文版
	GB/T 223.25-1994 Methods for chemical analysis of iron，steel and alloy--The dimethylglyoxime gravimetric method forthe determination of nickel content - 英文版
	GB/T 223.22-1994 Methods for chemical analysis of iron，steel and alloy--The nitroso-R-salt spectrophotometric method for the determination of cobalt content - 英文版
	GB/T 223.21-1994 Methods for chemical analysis of iron，steel and alloy--The 5-Cl-PADAB spectrophotometricmethod for the determination of cobalt content - 英文版
	GB/T 223.20-1994 Methods for chemical analysis of iron，steel and alloy--The fotentiometric titration method for the determination of cobalt content - 英文版

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