GB/T 13580.13-1992 Determination of calcium and magnesium in the wet precipitation—Atomic absorption spectrophotometry

GB/T 13580.1-1992 General principles for analytical methods of the wet precipitation GB/T 13580.2-1992 Collection and preservation of the wet precipitation sample GB/T 13580.3-1992 Determination of specific conductance in the wet precipitation GB/T 13580.4-1992 Determination of pH value of the wet precipitation—Glass electrode method GB/T 13580.5-1992 Determination of fluoride, chloride, ntrite nitrate, salfate in the wet precipitation—Ion chromotography GB/T 13580.6-1992 Determination of sulfate in the wet precipitation GB/T 13580.7-1992 Determination of nitrite in the wet precipitation—N-(1-naphthyl)-1, 2-diaminoethane dihydrochloride spectrophotometry GB/T 13580.8-1992 Determination of nitrate in the wet precipitation GB/T 13580.9-1992 Determination of chloride in wet precipitation—Ferrithiocyanate spectrophotometry GB/T 13580.10-1992 Determination of fluoride in the wet precipitation—Fluor reagent spectrophotometry GB/T 13580.11-1992 Determination of ammonium in the wet precipitation GB/T 13580.12-1992 Determination of sodium and potassium in the wet precipitation—Atomic absorption spectrophotometry

GB/T 13580.2-1992 Collection and preservation of the wet precipitation sample