GB/T 12690.9-2003 标准详情

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

Chemical analysis of magnesium fluoride - Part 1: Preparation and storage of test samples

Methods for chemical analysis of stannic oxide - Part 8: Determination of loss on ignition - Gravimetric method

Methods for chemical analysis of gold—Part 12：Determination of silver, copper, iron, lead, bismuth, antimony, magnesium, nickel, manganese, palladium, chromium, platinum, rhodium, titanium, zinc, arsenic, tin, silicon, cobalt, calcium, potassium, lithium, sodium, tellurium, vanadium, zirconium, cadmium, molybdenum, rhenium, aluminum contents—Inductively coupled plasma atomic emission spectrometry

Methods for chemical analysis of tungsten - Part 20: Determination of vanadium content - Inductively coupled plasma atomic emission spectrometry

Methods for chemical analysis of copper and copper alloys - Part 14：Determination of manganese content

Methods for chemical analysis of gold ores-Part 14: Determination of thallium content - Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry

Method for chemical analysis of copper-steel composite metal—Part 1：Determination of copper content—Iodine titration method

Methods for chemical analysis of cobalt oxalate - Part 7: Determination of sulfate ion content - Combusition - Iodimetry

Methods for chemical analysis of silica sand for foundry

Methods for chemical analysis of silicate rocks—Part 32: Determination of 20 components including aluminium oxide etc.—Mixed acid digestion-inductively coupled plasma atomic emission spectrometry

Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 28：Determination of ruthenium content—Inductively coupled plasma atomic emission spectrometry

Textiles—Quantitative chemical analysis—Mixtures of mulberry silk and tussah silk

Chemical analysis methods and determination of physical performance of alumina—Part 25: Method for the determination of tapped and untapped density

Chemical analysis methods for sacrificial anodes of Al-Zn-In system alloy

Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method

Textiles—Quantitative chemical analysis—Mixtures of polyacrylonitrile preoxidized fiber and certain other fibers