Analysis of 21 VOCs in Coatings

Internal standard: Diethylene glycol dimethyl ether

Chromatography method:

Injection port: 250 ℃ FID: 280 ℃

柱炉： 110℃（6min）,5℃/minto140℃（6min）,8℃/min to 240(10min)

Carrier gas (N2): 11psi Split flow: 70ml/min Purge: 5ml/min

Injection volume: 0.5ul

Injection method: Split injection

Detector: Wide Range FID

Peak order:

1. Ethanol; 2. Acetone; 3. Isopropanol; 4. Isobutanol; 5. Triethylamine; 6. N-butanol; 7. Propylene glycol monomethyl ether; 8. Dimethylethanolamine; 9. Ethylene glycol; 10. Butyl acetate; 11. 1,2-propanediol; 12. Methyl isopentenone; 13. Ethylene glycol monomethyl ether; 14. Propylene glycol butyl ether; 15. Diethylene glycol dimethyl ether (internal standard); 16. Diethylene glycol monobutyl ether; 17. Diethylene glycol; 18. N-dimethylpyrrolidine; 19. Diethylene glycol monomethyl ether; 20. Dipropylene glycol butyl ether; 21. Ethylene glycol phenyl ether; 22. Propylene glycol phenyl ether;

Applicability: Meets the following standards

GB18582-2020 Harmful Substances in Building Wall Coatings

GB/T 23985-2009 Determination of volatile organic compound (VOC) content in paints and varnishes - Differential method

GB/T 23986-2009 Determination of volatile organic compound (VOC) content in paints and varnishes Gas chromatographic method

GB24408-2009 Hazardous substances in exterior wall coatings for buildings Appendix A Volatile compounds in water-based exterior wall coatings

Gas chromatography method for testing the total content of organic compounds, ethylene glycol ethers, and ether esters.