Electronic flue gas sol refers to the gaseous dispersion system composed of solid or liquid particles suspended in the gas medium. The density of these solid or liquid particles can vary slightly or greatly from that of the gas medium. Generally, the aerosol detection is required for electronic cigarettes, and there are as many as 20 detection items.

Detection of toxic substances in electronic smoke - aerosol detection items:

1. Phthalates (18 kinds) GB 5009.271

2. Methanol GB 5009.266

3. Diethylene glycol GB/T 32115

4. Glycol GB/T 32115

5. Benzene Q/SP 001-2020

6. Toluene Q/SP 001-2020

7. Ethylbenzene Q/SP 001-2020

8. Xylene (including p-xylene, m-xylene and o-xylene) Q/SP 001-2020

9. Diacetyl GB 23488

10. Formaldehyde GB/T 5009.49

11. Acetaldehyde GB/T 11934

12. Acrolein GB/T 11934

13.2,3-Butanedione GB/T 4928

14. Lead (Pb) GB 5009.268

15. Mercury (Hg) GB 5009.268

16. Arsenic (As) GB 5009.268

17. Cadmium (Cd) GB 5009.268

18. Chromium (Cr) GB 5009.268

19. Nickel (Ni) GB 5009.268

20. Antimony (Sb) GB 5009.268

The electronic cigarette aerosol inhaled and exhaled from the electronic cigarette may contain harmful and potentially harmful substances, including nicotine; Inhalable ultrafine particles deep in the lungs; Seasonings, such as diacetyl, a chemical substance related to severe lung disease; Volatile organic compounds (VOC); Carcinogenic chemicals; Heavy metals, such as nickel, tin and lead.

The contents of formaldehyde, acetaldehyde, acrolein and butanedione in the carbonyl compounds in the electronic smoke liquid and the electronic smoke sol can be calculated after the derivatization reaction of 2,4-dinitrophenylhydrazine under acidic conditions and the analysis by the special instrument for laboratory detection. Although the principle is the same, the difference between the sample pretreatment of electronic cigarette liquid and the emission of electronic cigarette is not small. For electronic cigarette liquid, the derivation process can be completed by weighing a certain amount of cigarette liquid sample and adding a certain amount of derivatization reagent; However, for electronic smoke emissions, fixed capture devices are required to collect aerosol samples.