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GB/T 4921-1985 English PDF

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GB/T 4921-1985: Waste gas from manufacturing process. Determination of chemical oxygendemand and nitrogen oxide. Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
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GB/T 4921-1985English159 Add to Cart 2 days [Need to translate] Waste gas from manufacturing process. Determination of chemical oxygendemand and nitrogen oxide. Potassium dichromate oxidation and naphthylethylene diamine colorimetric method   GB/T 4921-1985

PDF similar to GB/T 4921-1985


Standard similar to GB/T 4921-1985

HJ 57   GB/T 33686   HJ 577   

Basic data

Standard ID GB/T 4921-1985 (GB/T4921-1985)
Description (Translated English) Waste gas from manufacturing process. Determination of chemical oxygendemand and nitrogen oxide. Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Z23
Classification of International Standard 13.060.40
Word Count Estimation 4,430
Date of Issue 1/18/1985
Date of Implementation 8/1/1985
Issuing agency(ies) National Environmental Protection Agency
Summary This standard applies to the determination of mercury fulminate gas treatment or after initial treatment in the oxygen and nitrogen oxide. Scope ODP of 2 ~ 200mg/L, NO 1 ~ 100mg/m ^ 3.

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