GB/T 17138-1997

GB/Z 41359-2022 Soil quality—Determination of abundance and activity of soil microflora using respiration curves GB/Z 41358-2022 Biological test methods for comprehensive characterization of soil health GB/Z 170-2026 Soil quality—Measurement of enzyme activity patterns in soil samples—Using fluorogenic substrates in micro-well plates GB/T 11220.1-1989 Determination of uranium in soil--CL-5209 extractant-containing resin separation 2-(5-bromo-2-pyridylazo)-5-diethlaminophenol spectrophotometry GB/T 11219.1-1989 Determination of plutonium in soil--Extraction chromatography method GB/T 11219.2-1989 Determination of plutonium in soil--Ion exchange method GB/T 17140-1997 Soil quality--Determination of lead，cadmium--KI-MIBK extraction flame atomic absorption spectrophotometry GB/T 17139-1997 Soil quality--Determinationof nickel--Flame atomic absorption spectrophotometry