Comparison of the adsorption of carbofuran at the silica-liquid and liquid-vapour interfaces

✍ Scribed by Mear, A.-M.; Privat, M.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 234 KB
• Volume: 53
• Category: Article
• ISSN: 1526-498X
• DOI: 10.1002/(sici)1096-9063(199806)53:2<172::aid-ps752>3.0.co;2-e

✦ Synopsis

The adsorption processes of carbofuran from an aqueous solution have been determined at the solidÈliquid interface, onto silica and at liquidÈvapour interfaces. At the solidÈliquid interface, the adsorption isotherms and their evolution with temperature reveal that adsorption is generally weak but increases with temperature. Adsorption also signiÐcantly increases with concentration when the solubility limit is approached. The study at the liquidÈvapour interface reveals that adsorption at this interface is 70 times larger than at the solidÈliquid interface. Again, adsorption values at the liquidÈvapour interface increase with temperature (below 30¡C) and near the solubility limit. Consequences of the observations on the behaviour of carbofuran in the environment are discussed. 1998