GB/T 2921-1982
Abolished
GB/T 609-2006
Replaced
National standards
GB/T 609-2006 Chemical reagent—General method for the determination of total nitrogen
GB/T 609-2006 Chemical reagent—General method for the determination of total nitrogen
Basic Information
Standard Code:
GB/T 609-2006
Standard Type:
National standards
Standard Status:
Replaced
is_force_gb:
no
CCS Name:
Chemical reagents
ICS Name:
Chemical reagents
Publish Date:
2006-11-03
Implement Date:
2007-06-01
Pages:
3 pages
Scope
This standard specifies a general method for converting inorganic nitrogen compounds into ammonium salts and determining them by visual colorimetry with Nessler's reagent. This standard is applicable to the determination of the total amount of trace inorganic nitrogen compounds (including nitrates, nitrites, and ammonium salts) in chemical reagents. The detection range is 0.05 μg/mL to 0.8 μg/mL (calculated in terms of N).
Development Information
Replace the following standards
Superseded by the following standards
Referenced Standards
GB/T 602-2002 Chemical reagent—Preparations of standard solutions for impurity
GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods
GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
GB/T 602-2026 Chemical reagent—Preparations of standard solutions for impurity
Adopt standards
ISO 6353-1:1982
Related Standards
GB/T 2922-1982
Abolished
GB/T 2922-1982 Chemical reagents—Determination of specific surface area of solid supports used in chromatography
GB/T 3914-1983
Replaced
GB/T 3914-1983 Chemical reagents—The general rules of anodic stripping voltammetry
GB/T 673-1984
Replaced
GB/T 673-1984 Chemical reagent—Arsenic trioxide
GB/T 1263-1986
Replaced
GB/T 1263-1986 Chemical reagent—Disodium hydrogen phosphate dodecahydrate
GB/T 1292-1986
Replaced