GB/T 3839-1983
Active
NB/T 11531-2024
Active
Industry standards-Energy
NB/T 11531-2024 Determination of total phosphorus,ammonia nitrogen,permanganate index in coal mine water—Flow injection-spectrophotometry
NB/T 11531-2024 Determination of total phosphorus,ammonia nitrogen,permanganate index in coal mine water—Flow injection-spectrophotometry
Price:
$ 38.00
Basic Information
Standard Code:
NB/T 11531-2024
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Basic standards and general methods
ICS Name:
\nWastewater
Publish Date:
2024-05-24
Implement Date:
2024-11-24
Pages:
20 pages
Scope
This document describes the use of flow injection-spectrophotometry to determine the content of total phosphorus, ammonia nitrogen, and permanganate index in mine water.
This document is applicable to the determination of total phosphorus, ammonia nitrogen, and permanganate index in mine water.
When the detection optical path is 10 mm, the method's detection limit and lower limit for total phosphorus, ammonia nitrogen, and permanganate index are shown in Table 1.
Development Information
Referenced Standards
Related Standards
GB 4284-1984
Replaced
GB 4284-1984 Control standards for pollutants in sludges from agricultural use
GB 4914-1985
Replaced
GB 4914-1985 Effluent standards for oil-bearing waste water from offshore petroleum development industry
GB/T 4918-1985
Abolished
GB/T 4918-1985 Waste water from manufacturing process—Determination of total nitro compounds—Spectrophotometric method
GB/T 4919-1985
Abolished
GB/T 4919-1985 Waste water from manufacturing process—Determination of total nitro compounds—Gas chromatographic method
GB 9135-1988
Abolished