GB/T 6816-1986
Abolished
T/CHES 75-2022
Active
Group standards
T/CHES 75-2022 Water quality—Determination of the chemical oxygen demand—Continuous flow analysis spectrophotometric method
T/CHES 75-2022 Water quality—Determination of the chemical oxygen demand—Continuous flow analysis spectrophotometric method
Price:
$ 26.00
Basic Information
Standard Code:
T/CHES 75-2022
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for toxic substances in water environments
ICS Name:
\nWater quality
Publish Date:
2022-09-29
Implement Date:
2022-12-01
Pages:
16 pages
Scope
This document specifies the continuous flow analysis spectrophotometric method for determining the chemical oxygen demand in surface water. This document is applicable to the determination of chemical oxygen demand in surface water. The detection limit of this document is 1.3 mg/L, and the determination limit is 5.2 mg/L. When the sample concentration exceeds 200 mg/L or the chloride ion concentration is greater than 200 mg/L, it is advisable to measure after dilution.
Development Information
Referenced Standards
Related Standards
GB/T 6920-1986
Active
GB/T 6920-1986 Water quality—Determination of pH value—Glass electrode method
GB/T 7466-1987
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GB/T 7467-1987
Active
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GB/T 7468-1987
Abolished
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GB/T 7469-1987
Active