2022-02-23АЙИ
HJ 635-2012 Soil-Determination of water-soluble and acid-soluble sulfates-Gravimetric method
2022-02-23АЙИ
HJ 746-2015 Determination of soil redox potential-potentiometric method
2022-02-23АЙИ
HJ 658-2013 Determination of soil organic carbon-oxygen combustion-titrimetric method
2022-02-23АЙИ
HJ 615-2011-Determination of soil organic carbon-Potassium dichromate oxidation-spectrophotometric method
2022-02-23АЙИ
HJ 695-2014 Determination of Soil Organic Carbon-Combustion Oxidation-Non-Dispersive Infrared Method
2022-02-23АЙИ
HJ 704-2014 Determination of Available Phosphorus in Soil-Sodium Bicarbonate Extraction-Molybdenum Antimony Spectrophotometry
2022-02-23АЙИ
HJ 491-2009 Soil-Determination of total chromium-Flame atomic absorption spectrophotometry
2022-02-23АЙИ
HJ 632-2011 Soil-Determination of Total Phosphorus-Alkali Fusion-Molybdenum Antimony Resistant Spectrophotometry
2022-02-23АЙИ
HJ 679-2013 Soil and sediment-Determination of acrolein, acrylonitrile and acetonitrile-Headspace-gas chromatography
2022-02-23АЙИ