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