GB/T 7488-1987
Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method

Withdraw

Standard No.

GB/T 7488-1987

Language

Chinese

Release Date

1987

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Lastest

GB/T 7488-1987

Replace By

HJ 505-2009

Scope

This method is applicable to water samples with BOD₅ greater than or equal to 2mg/L and not exceeding 6000mg/L. This method can still be used for water samples with BOD₅ greater than 6000mg/L, but due to dilution will cause errors, it is necessary to require careful explanation of the measurement results. The results obtained in this test are the result of the combination of biochemistry and chemistry, they are not as strict and well-defined as a single, well-defined chemical process, but it can provide indicators for evaluating the quality of various water samples . The results of this test may be disturbed by the presence of certain substances in the water that are toxic to microorganisms, such as fungicides, toxic metals or free chlorine, etc., which inhibit biochemical action. Algae or nitrifying microorganisms in the water may also cause falsely high results.

GB/T 7488-1987 history

• 1987 GB/T 7488-1987 Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method

GB/T 7488-1987 Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method was changed to HJ 505-2009 Water quality.Determination of biochemical oxygen demand after 5 days(BOD)for dilution and seeding method.