GB/T 15437-1995
Ambient air--Determination of ozone--Indigo disulphonate spectrophotometry (English Version)

Standard No.

GB/T 15437-1995

Language

Chinese, Available in English version

Release Date

1995

Published By

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

Status

Withdraw 2009-12

Latest

GB/T 15437-1995

Replace By

HJ 504-2009

Scope

This standard specifies the sodium indigo disulfonate spectrophotometric method for the determination of ozone in ambient air. When the sampling volume is 5-30L, this standard is suitable for measuring the concentration range of ozone in the air in the range of 0.030-1.200mg/m³. Nitrogen dioxide has a positive interference on the determination of ozone, which is about 6% of its mass concentration. When the concentrations of sulfur dioxide, hydrogen sulfide, peroxyacetyl nitrate (PAN) and hydrogen fluoride in the air are higher than 750, 110, 1800 and 2.5 μg/m³, they interfere with the determination of ozone.

GB/T 15437-1995 history

• 1995 GB/T 15437-1995 Ambient air--Determination of ozone--Indigo disulphonate spectrophotometry

GB/T 15437-1995 Ambient air--Determination of ozone--Indigo disulphonate spectrophotometry was changed to HJ 504-2009 Ambient air.Determination of ozone.Indigo disulphonate spectrophotometry.