YS/T 78-1994 lead-bearing rock ore

GB/T 2007.1-1987 General rules for the sampling and sample preparation of minerals in bulk—Sampling by manual method GB/T 2007.2-1987 General rules for the sampling and sample preparation of minerals in bulk Sample preparation by manual method GB/T 2007.3-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental method for evaluation of quality variation GB/T 2007.4-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental methods for checking the precision GB/T 2007.4-2008 General rules for the sampling and sample preparation of minerals in bulk—Experimental methods for checking the precision and bias GB/T 2007.5-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental method for checking the bias of sampling GB/T 2007.6-1987 General rules for the sampling and sample preparation of minerals in bulk—Determination of moisture content—Heat drying method GB/T 2007.7-1987 General rules for the sampling and sample preparation of minerals in bulk—The method for determination of size by manual sieving GB/T 3257.1-1999 Methods for chemical analysis of bauxite—Determination of aluminium oxide content-EDTA titrimetric method GB/T 3257.2-1999 Methods for chemical analysis of bauxite—Determination of silicon dioxide content—Gravimetric—molybdenum blue photometric method GB/T 3257.3-1999 Methods for chemical analysis of bauxite—Determination of silicon dioxide content—Molybdenum blue photometric method GB/T 3257.4-1999 Methods for chemical analysis of bauxite—Determination of iron oxide content—Dichromate titrimetric method GB/T 3257.5-1999 Methods for chemical analysis of bauxite—Determination of iron oxide content—Orthophenanthroline photometric method GB/T 3257.6-1999 Methods for chemical analysis of bauxite—Determination of titanium dioxide content—Diantipyrylmethane photometric method GB/T 3257.7-1999 Methods for chemical analysis of bauxite—Determination of calcium oxide content—Flame atomic absorption spectrophotometric method GB/T 3257.8-1999 Methods for chemical analysis of bauxite—Determination of magnesium oxide content—Flame atomic absorption spectrophotometric method GB/T 3257.9-1999 Methods for chemical analysis of bauxite—Determination of potassium oxide and sodium oxide content—Flame atomic absorption spectrophotometric method GB/T 3257.10-1999 Methods for chemical analysis of bauxite—Determination of manganese oxide content—Flame atomic absorption spectrophotometric method GB/T 3257.11-1999 Methods for chemical analysis of bauxite—Determination of chromium oxide content—Flame atomic absorption spectrophotometric method GB/T 3257.12-1999 Methods for chemical analysis of bauxite—Determination of vanadium pentoxide content—N-benzoyl-N-phenythyroxylamine photometric method GB/T 3257.13-1999 Methods for chemical analysis of bauxite—Determination of zinc content—Flame atomic absorption spectrophotometric method GB/T 3257.15-1999 Methods for chemical analysis of bauxite—Determination the total content of rare earth oxide—Tribromo-arsenazo photometric method GB/T 3257.16-1999 Methods for chemical analysis of bauxite—Determination of gallium oxide concent—Rhodamine B-extraction photometric method GB/T 3257.17-1999 Methods for chemical analysis of bauxite—Determination of phosphorus pentoxide content—Molybdenum blue spectrophotometric method GB/T 3257.18-1999 Methods for chemical analysis of bauxite—Determination of sulfur content—Direct combustion-iodometric method GB/T 3257.20-1999 Methods for chemical analysis of bauxite—Determination of total carbon content—Non-aqueous titrametric method after combustion GB/T 3257.21-1999 Methods for chemical analysis of bauxite—Determination of the loss on ignition—Gravimetric method GB/T 3257.22-1999 Methods for chemical analysis of bauxite—Preparation of pre-dried test samples GB/T 3257.23-1999 Methods for chemical analysis of bauxite—Determination of organic carbon content—Titrimetric method GB/T 3257.24-1999 Methods for chemical analysis of bauxite—Determination of hydroscopic moisture in analytical samples—Gravimetric method