GB/T 4921-1985 in English

VALID

Waste gas from manufacturing process; Determination of chemical oxygen demand and nitrogen oxide; Potassium dichromate oxidation and naphthylethylene diamine colorimetric method

Issued on:1985-01-18
Implemented on:1985-08-01
File Format:PDF
Delivery:Via email within 1~3 business days

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Standard No:	GB/T 4921-1985
Document status:	VALID
Title in English:	Waste gas from manufacturing process; Determination of chemical oxygen demand and nitrogen oxide; Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
Title in Chinese:	工业废气耗氧值和氧化氮的测定重铬酸钾氧化、萘乙二胺比色法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	1985-01-18
Implemented on:	1985-08-01
Chinese Classification:	Z23-Analysis methods for industrial wastewater and pollutants
Professional Classification:	GB-National Standard
Related Keywords:	chemical oxygen demand oxygen consumption value application oxygen consumption value nitrogen oxide waste gas
Related Topics:	Nitric oxide air nitrogen oxygen ratio Chromatographic determination of nitrogen oxides Chromatographic nitrogen oxides Oxidation standard oxidized amine Oxygen pool Industrial Oxygen Determination Methods Oxidation in English Oxygen pool oxygen value Potassium dichromate waste gas Molybdenum nitrogen dioxide Potassium dichromate waste gas Detection of Nitrogen Dioxide Mass Spectrometry Nitrogen Oxygen Ratio Octafluoronaphthalene Oxidation Nitrogen Dioxide Test diazotization Potassium dichromate standard solution Oxygen pool exhaust Mass Spec 5 Nitrogen Oxygen Ratio oxygen consumption Potassium dichromate standard solution Potassium dichromate + standard solution Potassium dichromate cuvette Oxygen consumption Potassium dichromate standard solution,,, Potassium dichromate standard solution,, Potassium dichromate standard solution Potassium dichromate standard solution Chromate oxide film Potassium peroxychromate total oxidation value Oxygenated Nitrogen Dioxide Nitrogen specific gravity Chromate aluminum oxide film no nitric oxide Nitrogen specific gravity Potassium dichromate colorimetric method Determination of Potassium Dichromate Ultraviolet Potassium Dichromate Colorimetric Method potassium dichromate colorimetric UV Oxidation value speed GBT4921 GB/T 4921-1985 oxidation Hydrogen peroxide oxidation value detection Detection limit of cod oxidized by potassium dichromate Measuring calorific value with oxygen and nitrogen meter Preparation method of acidic potassium permanganate for determination of nitrogen oxides in the atmosphere Determination of acetic acid in waste gas Determination method of unorganized exhaust gas nitrogen oxides Total oxidation value detection Potassium oxide industry Industrial nitric oxide detection Carbon dioxide to acetic acid production method Industrial method for converting nitrogen dioxide into nitric oxide Amine value determination industry Standard method for potassium dichromate colorimetry Industrial silicon oxygen consumption Method for determination of total nitrogen by potassium persulfate oxidation method Methods for testing nitrogen oxides and sulfur dioxide Manual determination method of nitrogen oxides Detection method of potassium acetate Methods for determination of acid value and peroxide value Colorimetric method for determination of total nitrogen Manual determination of nitrogen oxides Comparison of nitrogen oxide determination methods Potassium dichromate oxidation method standard document gb 4921-1985

本标准适用于经过处理或初步处理后的雷汞废气中的耗氧值和氧化氮的测定。适用范围耗氧值2～200mg/L，氧化氮1～100mg/m3。本标准中耗氧值系指在特定条件下，废气中能使重铬酸钾还原的某些有机气体和还原性气体的含量，以氧的消耗值计。本标准中氧化氮系指一氧化氮、二氧化氮等氮氧化合物的总和，以二氧化氮计。

Scope

This standard applies to the determination of the oxygen consumption value and nitrogen oxides in the treated or preliminarily treated mercury exhaust gas. Scope of application Oxygen consumption value 2-200mg/L, nitrogen oxide 1-100mg/m3.

More samples: YD/T 3934-2021 JGJ 94-2008 GB 18306-2015

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