HJ 674-2013
Water quality.Determination of hydrazine and monomethyl hydrazine by p-Dimethylaminobenzaldehyde spectrophotometric method (English Version)

Standard No.

HJ 674-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

Professional Standard - Environmental Protection

Latest

HJ 674-2013

Replace

GB/T 15507-1995 GB/T 14375-1993

Scope

This standard specifies the p-dimethylaminobenzaldehyde spectrophotometric method for the determination of hydrazine in water. This standard applies to the determination of hydrazine in water and industrial wastewater. Taking 50 ml of water sample and using a 5 cm absorption cell for calculation, the detection limit of this method is 0.003 mg/L in terms of hydrazine, and the quantitative determination range is (0.012~0.240) mg/L. If a 1 cm absorption cell is used, the detection limit is 0.015 mg/L, and the quantitative determination range is (0.060~1.00) mg/L. When the concentration of hydrazine in the water sample is greater than 1.00 mg/L, it can be measured after dilution.

HJ 674-2013 history

• 2013 HJ 674-2013 Water quality.Determination of hydrazine and monomethyl hydrazine by p-Dimethylaminobenzaldehyde spectrophotometric method

HJ 674-2013 Water quality.Determination of hydrazine and monomethyl hydrazine by p-Dimethylaminobenzaldehyde spectrophotometric method has been changed from GB/T 15507-1995 Water quality--Determination of hydrazine--p-Dime-tylaminobenzaldehyde spectrophotometric method.

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