HJ 1221-2021
Gravimetric Method for Determination of Dust Falling from Ambient Air (English Version)

Standard No.

HJ 1221-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

Professional Standard - Environmental Protection

Latest

HJ 1221-2021

Scope

SN9 This standard applies to the determination of degradation in ambient air. The method limit of dust fall accurately measured by this village is 3 tknm2.30d4, and the lower limit of measurement is 1.2tkm2.30 d.

HJ 1221-2021 Referenced Document

• HJ 194 Technical specification for manual monitoring of ambient air quality "Revision No. 1"

HJ 1221-2021 history

• 2021 HJ 1221-2021 Gravimetric Method for Determination of Dust Falling from Ambient Air