𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Photochemical formation of mutagenic compounds from alkenes and ozone or nitrogen dioxide

✍ Scribed by Katarina Victorin; Margareta Ståhlberg

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
740 KB
Volume
11
Category
Article
ISSN
0893-6692

No coin nor oath required. For personal study only.

✦ Synopsis

In order to investigate the possible formation of mutagenic compounds from alkenes emitted in ambient air, laboratory experiments were performed with Salmonella typhimurium strain TAlOO in a small-scale flow-through exposure system. The reaction time for mixtures of alkenes with ozone or nitrogen dioxide was 40 minutes, and the exposure time for bacteria was 6 hours. Ozone gave rise to a small mutagenic effect in combination with 1,3-butadiene or vinyl chloride, with and without ultraviolet (UV) irradiation, but not in combination with ethene or propene. Nitrogen dioxide gave rise to a mutagenic effect in combination with propene, 1,3-butadiene, or vinyl chloride, but only after UV irradiation. The mutagenic activity was highest with butadiene and seemed to be dose-related to the concentration of nitrogen dioxide. Nitrogen dioxide with ethene did not produce a mutagenic effect. A mixture of ethene, propene, and butadiene, tested with ozone or nitrogen dioxide with UV irradiation, did not potentiate each other's mutagenic effect.

📜 SIMILAR VOLUMES

Formation of Carbonyl Compounds from Azi
Formation of Carbonyl Compounds from Azines or Hydrazones with Active Manganese Dioxide
✍ Priv.-Doz. Dr. G. Maier; cand. chem. U. Heep 📂 Article 📅 1965 🏛 John Wiley and Sons 🌐 English ⚖ 226 KB

formamide complex [2], a mixture of 4-dimethylaminobenzaldehyde (2) and 4-dimethyIaminoisophthaldialdehyde (3) is formed from which (3) may be isolated with 15-20 % yield. 3,5-Dimethyl-N,N-dimethylaniline (4) is even more easily diformylated. Under conditions which convert ( I ) exclusively to (2)