GB/T 21796-2022 (English Version) PDF

Standard No.: GB/T 21796-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 21796-2022
Replace: GB/T 21796-2008

Scope: This document specifies the test substance information, test principle, reference substance/reference substance, test method, test procedure, quality assurance and quality control, data and report of the chemical activated sludge respiration inhibition test. This document is suitable for evaluating the effects of easily soluble, insoluble, easily adsorbed and volatile chemical substances on the organic carbon oxidation process and nitrification of microorganisms in the activated sludge of biological sewage treatment plants.

GB/T 21796-2022 Referenced Document

GB/T 21845 Chemicals.Water solubility test
GB/T 21851 Chemicals.Adsorption-desorption using a batch equilibrium method
GB/T 21852 Chemicals.Partition coefficient(n-octanol/water).High performance liquid chromatography(HPLC)method
GB/T 21853 Chemicals.Partition coefficient(n-octanol/water).Shake flask method
GB/T 21855 Chemicals.Test of hydrolysis as a function of pH
GB/T 22052 Test method for vapor pressure-temperature relationship and initial decompostition temperature of liquids by isoteniscope
GB/T 22228 Chemical products for industrial use.Determination of vapour pressure of solids and liquids in the rang 10to 10Pa.Static method
GB/T 22229 Chemical products for industrial use.Determinaton of vapour pressure of solids and liquids at range 10to 1 Pa.Vapour pressure balance method