GB/T 7477-1987
Water quality--Determination of the sum of calcium and magnesium--EDTA titrimetric method (English Version)

Standard No.

GB/T 7477-1987

Language

Chinese, Available in English version

Release Date

1987

Published By

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

Latest

GB/T 7477-1987

Replace

EJ/T 272.2-1985

Scope

This standard specifies the determination of the total amount of calcium and magnesium in groundwater and surface water by EDTA titration. This method is not suitable for water with a high salt content, such as sea water. The minimum concentration determined by this method is 0.05mmol/L.

GB/T 7477-1987 history

• 1987 GB/T 7477-1987 Water quality--Determination of the sum of calcium and magnesium--EDTA titrimetric method

GB/T 7477-1987 Water quality--Determination of the sum of calcium and magnesium--EDTA titrimetric method has been changed from EJ/T 272.2-1985 Analytical method for chromium in uranium mining and metallurgy wastewater.