China China Released 5 National Environmental Protection Standards (Draft for Comments)

“Ambient air and waste gas-Determination of acrylic esters-Gas chromatography” and etc.

Ministry of Ecology and Environment of People’s Republic of China released 5 national environmental protection standards (draft for comments), including “Ambient air and waste gas – Determination of acrylic esters – Gas chromatography” and etc. The deadline for comments will be November 10, 2020. The details of these 5 drafts for comments are as follows.

Ambient air-Determination of dustfall Gravimetric method
http://www.mee.gov.cn/xxgk2018/xxgk/xxgk06/202009/W020200930600770220123.pdf

Ambient air—Determination of total suspended particle —Gravimetric method
http://www.mee.gov.cn/xxgk2018/xxgk/xxgk06/202009/W020200930600772617088.pdf

Codes for Ambient Air Quality Monitoring Data
http://www.mee.gov.cn/xxgk2018/xxgk/xxgk06/202009/W020200930600774339935.pdf

Ambient Air Quality Continuous Automatic Monitoring System Data Capturing And Transmission Technical Specification
http://www.mee.gov.cn/xxgk2018/xxgk/xxgk06/202009/W020200930600776449106.pdf

Ambient air and waste gas – Determination of acrylic esters – Gas chromatography
http://www.mee.gov.cn/xxgk2018/xxgk/xxgk06/202009/W020200930600778821095.pdf

 

The following is an overview of the draft –“Ambient air and waste gas – Determination of acrylic esters – Gas chromatography”.

 

Scope of application

Applicable to the determination of the following 6 kinds of acrylates in ambient air, air of fugitive emission of fixed pollution sources monitoring point, and organized waste gases emission.

English name CAS registration number
Methyl acrylate 96-33-3
Ethyl acrylate 140-88-5
n-Propyl acrylate 925-60-0
Butyl acrylate 141-32-2
Methyl methacrylate 80-62-6
Butyl methacrylate 97-88-1

 

The standard specifies the methods and limits on measuring acrylic esters listed above by gas chromatography.

According to the explanatory documents for the standards, acrylic esters are mainly used in industries such as painting and adhesives, both national and local standards stipulate their emission limits. Examples of each standard are shown below respectively.

 

  • National standard GB 31572-2015 “Emission standard of pollutants for synthetic resin industry”

Emission limit for methyl acrylate: 50mg/m3 (general limit for organic emission)

 

  • Shanghai local standard DB 31/933-2015 “Integrate emission standards of air pollutants”

Emission limit for acrylic esters: 50mg/m3 (organic emission)

Emission limit for methyl acrylate:0.4 mg/m3 ( boundary of factory site)

※Sum of the emission limits of methyl acrylate, ethyl acrylate and butyl acrylate.