NY/T 1977-2010
DB52/T 1607-2021
NY/T 2017-2011
Determination of nitrogen,phosphorus and potassium in plants
DB61/T 1414-2021
DB35/T 1526-2015
GB/T 22923-2008
Determination of nitrogen phosphorus potassium for fertilizers by auto analyzer
GB/T 24583.5-2019e
Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 24583.5-2019
Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
NY/T 2273-2012
LY/T 1271-1999
Determination of total nitrogen,phosphorus,potassium,sodium,calcium,magnesium in forest plant and forest floor
SN/T 3793-2014
Determination of total phosphorus,potassium content in compound fertilizers - X-ray fluorescence spectrometry
GB/T 5195.15-2017
Fluorspar—Determination of calcium,aluminum,silicon,phosphorus,sulfur,potassium,iron,barium and lead content—Wavelength dispersive X-ray fluorescence spectrometric method
GB/T 24583.8-2019
Vanadium-nitrogen—Determination of silicon, manganese, phosphorus, aluminum content—Inductively coupled plasma atomic emission spectrometric method
DB23/T 2484-2019
GB/T 24583.5-2009
Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
20240819-T-469
Determination of nitrogen, sulfur and phosphorus in foundry reclaimed sand
NB/T 11260-2023
Determination of silicon,aluminum,iron,calcium,magnesium,sodium,potassium,phosphorus,titanium and manganese in coal gangue—X-ray fluorescence spectrometric method
DB13/T 5589-2022
DB53/T 587-2014
GB/T 22661.10-2008
Chemical analysis methods of potassium fluoborade - Part 10: Determination of phosphorus pentoxide content - Molybdenum blue photometric method