GB/T 470-2008 Zinc ingots

GB/T 470-1997 Zinc ingots

GB/T 1250-1989 Rules for expression and judgement of limiting values GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 12689.1-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of aluminum content—The chromazurol S-polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometric method and the EDTA titrimetric method GB/T 12689.1-2010 Methods for chemical analysis of zinc and zinc alloys—Part 1:Determination of aluminum content—Chromazurol S polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometry,Chromeazurol S spectrophotometric method and EDTA titrimetry GB/T 12689.2-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of arsenic content—The atomic fluorescence spectrometer method GB/T 12689.3-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of cadmium content—The flame atomic absorption spectrometric method GB/T 12689.4-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of copper content—The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method GB/T 12689.5-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of iron content—The sultosalicylic acid spectrometric method and the flame atomic absorption spectrometric method GB/T 12689.6-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lead content—The oscillopolarographic method GB/T 12689.7-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of magnesium content—The flame atomic absorption spectrometric method GB/T 12689.7-2010 Methods for chemical analysis of zinc and zinc alloys—Part 7:Determination of magnesium content—Flame atomic absorption spectrometric method GB/T 12689.8-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of silicon content—The molybdenum blue spectrophotometric method GB/T 12689.9-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of antimony content—The atomic fluorescence spectrometer and the flame atomic absorption spectrometric method GB/T 12689.10-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of tin content—The phenylfluorone-cetyltrimethyla-mmonium bromide spectrophotometric method GB/T 12689.11-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lanthanum and cerium contents—The tri-bromide arsenazo spectrophotometric method GB/T 12689.12-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lead,cadmium,iron,copper,tin,aluminium,arsenic,stibium,magnesium lanthanum and cerium contents—The inductively coupled plasma-optical emission spectrometric method

ISO 752:2004