GB/T 14375-1993
Water quality. Determination of monomethyl hydrazine. p-Dimethylaminobenzaldegyde spectrophotometric method (English Version)

Standard No.

GB/T 14375-1993

Language

Chinese, Available in English version

Release Date

1993

Published By

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

Status

Withdraw 2014-02

Latest

GB/T 14375-1993

Replace By

HJ 674-2013

Scope

This standard specifies the p-dimethylaminobenzaldehyde spectrophotometric method for the determination of monomethylhydrazine in water. This method is suitable for the determination of monomethylhydrazine in surface water and aerospace industry wastewater. The determination range of monomethylhydrazine is 0.02～0.80mg/L. When the content of monomethylhydrazine in the water sample is greater than 0.80 mg/L, it can be diluted for determination. Hydrazine interferes with the determination of monomethylhydrazine. When the content of unsymmetrical dimethylhydrazine is higher than that of monomethylhydrazine, the calibration curve can be used to pre-calibrate.

GB/T 14375-1993 history

• 1993 GB/T 14375-1993 Water quality. Determination of monomethyl hydrazine. p-Dimethylaminobenzaldegyde spectrophotometric method

GB/T 14375-1993 Water quality. Determination of monomethyl hydrazine. p-Dimethylaminobenzaldegyde spectrophotometric method was changed to HJ 674-2013 Water quality.Determination of hydrazine and monomethyl hydrazine by p-Dimethylaminobenzaldehyde spectrophotometric method.