GB/T 31456-2026 Technical specification of surface geochemical exploration for oil and gas

GB/T 31456-2015 Technical specification for surface oil and gas geochemical exploration

DZ/T 0064.39-1993 Underground water quality testing method: Flame emission spectroscopy method for determining strontium DZ/T 0064.40-1993 Groundwater quality testing method: Catalytic polarography for determination of vanadium DZ/T 0064.41-1993 Groundwater quality testing method: Catalytic polarography for determination of zinc DZ/T 0064.42-1993 Groundwater quality testing method: Sensing coupled plasma atomic absorption spectrometer for determination of strontium and barium DZ/T 0064.43-1993 The method for testing groundwater quality using titration to determine acidity DZ/T 0064.44-1993 Groundwater quality testing method H: Acid-methyliodide spectrophotometry for determining boron DZ/T 0064.45-1993 The method for testing groundwater quality using mannitol-base titration to determine boron DZ/T 0064.46-1993 Underground water quality testing method: Bromophenol red colorimetry for determination of bromide DZ/T 0064.47-1993 The method of testing groundwater quality using titration to determine free carbon dioxide DZ/T 0064.48-1993 Testing method for groundwater quality: titration method for determining erosive carbon dioxide DZ/T 0064.49-1993 Groundwater quality testing method: titration method for determining carbonate, bicarbonate, and hydroxide DZ/T 0064.50-1993 Methods for Groundwater Quality Testing - Silver Determination by Titration - Determination of Chloride Content DZ/T 0064.51-1993 Groundwater quality testing method: Ion chromatography to determine chloride, fluoride, bromide, nitrate, and sulfate DZ/T 0064.52-1993 Groundwater quality testing method: Aryldiazaindole colorimetric method for determination of cyanide DZ/T 0064.53-1993 Underground water quality testing method: Alizarin complexone colorimetric method for determining fluoride. (English translation only) DZ/T 0064.54-1993 Underground water quality testing method: Ion selective electrode method for determining fluoride. (The result will be English translation only.) DZ/T 0064.55-1993 Groundwater quality testing method: Catalytic reduction method for determining iodide DZ/T 0064.56-1993 Groundwater quality testing method: Starch colorimetric method for determining iodide DZ/T 0064.57-1993 The method for testing groundwater quality using Nessler's reagent colorimetric method to determine ammonium DZ/T 0064.58-1993 The method of testing groundwater quality using the dihydroxybenzene-sulfonic acid spectrophotometry to determine nitrate is: "Nitrate determination using dihydroxybenzene-sulfonic acid spectrophotometry in groundwater quality testing" DZ/T 0064.59-1993 Groundwater quality testing method: UV spectrophotometry for determination of nitrate DZ/T 0064.60-1993 Testing methods for groundwater quality: Spectrophotometry for determination of nitrite ion. Note: This is the English translation only DZ/T 0064.61-1993 The method for testing groundwater quality using the phosphorus-biuret method for determining phosphate DZ/T 0064.62-1993 Testing method for groundwater quality: Determination of silicon oxide using molybdenum yellow colorimetry DZ/T 0064.63-1993 Testing methods for groundwater quality - Determination of silicate using the molybdenum blue colorimetric method DZ/T 0064.64-1993 Methods for Groundwater Quality Testing—Barium Titration with Disodium EDTA for Determining Sulfate Ions DZ/T 0064.65-1993 Groundwater quality testing method: Turbidity method for determining sulfate DZ/T 0064.66-1993 The method of testing groundwater quality using iodometric method to determine sulfide DZ/T 0064.67-1993 Groundwater quality testing method: Diaminodiphenylamine colorimetric method for determining sulfide DZ/T 0064.68-1993 Groundwater quality testing method: Acidic permanganate oxidation method for determining chemical oxygen demand DZ/T 0064.69-1993 Groundwater quality testing method: Alkaline permanganate oxidation method for determining chemical oxygen demand DZ/T 0064.70-2021 Groundwater Quality Analysis Method Part 70: Determination of Oxygen Demand by Potassium Dichromate Titration Method DZ/T 0064.70-1993 Testing method for groundwater quality: determination of chemical oxygen demand using the re-doxydative method DZ/T 0064.71-1993 Groundwater quality testing method: Gas chromatography to determine organic chlorine residue DZ/T 0064.72-1993 The method for testing groundwater quality using gas chromatography to determine the amount of organic phosphorus residue DZ/T 0064.73-1993 Testing method for groundwater quality - 4-aminoantipyrine spectrophotometric determination of phenol DZ/T 0064.74-1993 Groundwater quality testing method: Gas chromatography method for determining gases DZ/T 0064.75-1993 Groundwater quality testing method: Radon and radon measurement using gas emanation method DZ/T 0064.76-1993 The method for testing groundwater quality using radiochemical analysis to determine total alpha and total beta DZ/T 0064.77-1993 Groundwater quality testing method CO2-H2O (carbon dioxide-water) equilibrium method for determining oxygen isotopes (Note: 2 represents the lowercase o and h) DZ/T 0064.78-1993 Groundwater quality testing method: Metal zinc reduction method for determination of deuterium DZ/T 0064.79-1993 The method for testing groundwater quality using radiochemical methods to determine deuterium DZ/T 0064.80-1993 Groundwater quality testing method - determination of 39 elements including lithium using plasma mass spectrometry DZ/T 0184.25-2024 Methods for Isotope Analysis of Geological Samples Part 25: Determination of Oxygen Isotope Composition in Natural Water by the Carbon Dioxide-Water Balance Method SY/T 5237-2019 Hydrogen Isotope Analysis of Water; Zinc Reduction and High-Temperature Pyrolysis Methods SY/T 5523-2016 Oilfield water analysis methods SY 5523-1992 Oilfield Water Analysis Methods SY/T 5523-2000 Oil and gas field water analysis method SY/T 5523-2006 Oilfield water analysis methods SY/T 7313-2016 Analysis of hydrogen isotopes in hydrocarbons and rock extracts and in kerogen SY/T 7359-2017 The Determination Method of Rare Gas Isotope Ratio SY/T 7359-2017 SY/T 7471-2020 Near surface oil and gas indicator microbial detection method