GB/T 20466-2006
Active
T/QAS 053-2021
Active
Group standards
T/QAS 053-2021 Determination of Chemical Oxygen Demand in High Chlorine Wastewater by TOC Detector Method
T/QAS 053-2021
Price:
$ 20.00
Basic Information
Standard Code:
T/QAS 053-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Environmental protection sampling and analysis testing methods
ICS Name:
\nChemical testing of water
Publish Date:
2021-09-13
Implement Date:
2021-09-16
Scope
Scope: This document specifies the working principle, reagents and materials, instruments and conditions, sampling methods, and allowable deviations for the determination of chemical oxygen demand (COD) in high-chlorine wastewater. This document is applicable to the determination of COD in high-chlorine wastewater with a concentration range of 0.2mg/L to 250mg/L, or a chloride ion concentration of 0 to 100,000mg/L. Main Technical Content: 1. Scope: This document specifies the working principle, reagents and materials, instruments and conditions, sampling methods, and allowable deviations for the determination of COD in high-chlorine wastewater. It is applicable to the determination of COD in high-chlorine wastewater with a concentration range of 0.2mg/L to 250mg/L, or a chloride ion concentration of 0 to 100,000mg/L. 2. Normative Reference Documents: The content of the following documents is an essential part of this document through normative references. Among them, the dated reference documents are applicable to this document only on the corresponding date; the undated reference documents are applicable to this document with their latest versions (including all amendment sheets). GB/T 6682 Specifications and Test Methods for Water Used in Analytical Laboratories GB/T 8170 Rules for the Rounding of Numerical Values and the Determination and Judgment of Limit Values HG/T 2843 Standard Titer Solutions, Standard Solutions, Reagent Solutions, and Indicator Solutions for Fertilizer Products 3. Terminology: The following terminology definitions are applicable to this document. 3.1 COD (Chemical Oxygen Demand): The amount of reducing substances in water that need to be oxidized by chemical methods. It is an indicator of the amount of reducing substances in water. Reducing substances in water are mainly organic matter. Therefore, COD has long been used as an indicator of organic matter content in water. The higher the COD value, the more serious the organic pollution of th
Development Information
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