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GB/T 4921-1985 PDF English

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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

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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 4,444
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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