GB/T 20466-2006
Active
T/CQEEMA 2-2021
Active
Group standards
T/CQEEMA 2-2021 Water Quality Determination of Dissolved Oxygen by Chemical Fluorescence Method
T/CQEEMA 2-2021
Price:
$ 20.00
Basic Information
Standard Code:
T/CQEEMA 2-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for toxic substances in water environments
ICS Name:
\nChemical testing of water
Publish Date:
2021-03-29
Implement Date:
2021-03-31
Scope
Scope: This standard specifies the chemical fluorescence method for measuring dissolved oxygen in water. This standard is applicable to the determination of dissolved oxygen in surface water, groundwater, drinking water, and wastewater. The method is suitable for water with high color and turbidity, as well as water that is not suitable for determination by the iodometric method. The measurement range of this standard is 0–20 mg/L. Main technical content: To develop a standard for measuring dissolved oxygen in water using the chemical fluorescence method as the basic principle, and to specify the requirements for chemical fluorescence instruments. (1) Through literature review, study the specific regulations of this method abroad and the research results in China. (2) Analyze the instrument performance requirements (zero-value error, indicated value error) that affect the accuracy of monitoring and propose instrument requirements. (3) Through comparative testing of the chemical fluorescence method with national standard methods (iodometric method, electrochemical probe method), demonstrate that it has the same accuracy and precision as the national standard methods. (4) Through actual sample analysis, inter-laboratory comparison, and method validation in laboratories, study and determine the monitoring method for measuring dissolved oxygen in water using the chemical fluorescence method, as well as the quality assurance and quality control technical systems.
Development Information
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