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Soil Nitrogen and Phosphorus Determination Colorimetric Method

Soil Nitrogen and Phosphorus Determination Colorimetric Method, Total:38 items.

In the international standard classification, Soil Nitrogen and Phosphorus Determination Colorimetric Method involves: Soil quality. Pedology, Farming and forestry, Water quality.

Group Standards of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• T/NAIA 012-2020 Determination of Soil Phosphatase Activity by Colorimetric Method of Disodium Phenyl Phosphate

Professional Standard - Agriculture, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• NY/T 1849-2010 Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in acid soil Universal extract-colorimetric method
• NY/T 1848-2010 Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in neutrality or calcareous soil Universal extract-colorimetric method
• NY/T 88-1988 Method for determination of soil total phosphorus
• GB 9837-1988 Soil Total Phosphorus Determination Method
• NY/T 1121.24-2012 Soil testing.Part 24:Determination of total nitrogen in soil.Automatic kjeldahl apparatus method
• NY/T 30-1986 Determination of rare earth oxide content in soil.Chlorophosphonazo-p-hippuric acid photometric method
• GB 6260-1986 Determination of Total Oxidized Rare Earth in Soil Spectrophotometric Method for Azochlorophosphorus Hippurate
• NY/T 53-1987 Method for the determination of soil total nitrogen(Semi-micro Kjeldahl method)

Shandong Provincial Standard of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• DB37/T 1897-2011 Determination of Soil Nitrate Nitrogen by Ion Chromatography
• DB37/T 643-2006 Gas Chromatography for the Determination of Dimethophos Residues in Soil

IN-BIS, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• IS 6361-1971 Colorimetric determination of phosphorus

SCC, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• AS 1289.D3.2:1977 Methods of testing soil for engineering purposes - Part D - Soil chemical tests - Determination of the pH value of a soil - Colorimetric method (subsidiary method)

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• GB/T 42488-2023 Soil Quality Determination of Inorganic Nitrogen 15N Abundance in Soil Stable Isotope Ratio Mass Spectrometry
• GB/T 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry
• GB/T 14552-1993 Water and soil quality-Determination of Organophosphorus pesticides-Gas chromatography

GOSTR, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• GOST R 58596-2019 Soils. Methods for determination of total nitrogen

Xinjiang Provincial Standard of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• DB65/T 602.3-2001 The determinanation of ammonium nitrogen in soil
• DB65/T 602.4-2001 The determinanation of nitrate nitrogen in soil
• DB65/T 602.5-2001 The determinanation of available phosphous in soil
• DB65/T 602.2-2001 The determinanation of hydrolyzable nitrogen in soil

Ningxia Provincial Standard of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• DB64/T 1734-2020 Soil Hydrolyzable Nitrogen Determination Kjeldahl Method

GSO, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• OS GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
• GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
• BH GSO ISO 11261:2017 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method

Hebei Provincial Standard of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• DB13/T 843-2007 Soil Available Nitrogen Determination

Korean Agency for Technology and Standards (KATS), Soil Nitrogen and Phosphorus Determination Colorimetric Method

• KS I ISO 11261-2008(2021) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
• KS I ISO 11261-2008(2018) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
• KS I ISO 11261-2021 Soil quality－Determination of total nitrogen－Modified Kjeldahl method
• KS I ISO 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method

Professional Standard - Forestry, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• LY/T 1237-1999 Determination of organic matter in forest soil and calculation carbon-nitrogen ratio
• LY/T 1228-2015 Determination of forest soil nitrogen

RO-ASRO, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• STAS 7184/14-1979 SOILS Determination of total phosphor content
• STAS 7184/2-1985 SOILS Nitrogen content determination

International Organization for Standardization (ISO), Soil Nitrogen and Phosphorus Determination Colorimetric Method

• ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method

AENOR, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.

Professional Standard - Environmental Protection, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• HJ 717-2014 Soil quality.Determination of total nitrogen.Modified Kjeldahl method

Sichuan Provincial Standard of the People's Republic of China, Soil Nitrogen and Phosphorus Determination Colorimetric Method

• DB51/T 1875-2014 Determination of soil alkaline nitrogen

Others:   Determination of total nitrogen and total phosphorus in soil, Soil Nitrogen and Phosphorus Determination Colorimetric Method.