Adsorption/thermal desorption-GC/MS for the analysis of pesticides in the atmosphere - MULTIGNER-QUENEL - Evaluation des expositions et recherche épidémiologique sur l'environnement, la reproduction et le développement (3ERD) Accéder directement au contenu
Article Dans Une Revue Chemosphere Année : 2000

Adsorption/thermal desorption-GC/MS for the analysis of pesticides in the atmosphere

Résumé

An analytical methodology using Automatic Thermal Desorption (ATD) and GC/MS was developed for the determination of the pesticides alachlor, atrazine, captan, formothion, lindane and phosalone in atmospheric samples. This methodology was developed to evaluate the atmospheric contamination by pesticides during treatments and by post-application. Atmospheric samples were collected by using (4 i.d. x 89 mm) stainless steel sampling tubes containing 125 mg of adsorbents at a flow rate of 80 ml min-1. Different types of adsorbents were tested for their ability to efficiently trap pesticides under study: Tenax TA, Carbopack Y, Carbopack B, Carbotrap, Carboxen, Chromosorb 106 and XAD-4. Results of experiment show that Tenax gives the better results for all the pesticides used but the use of the thermal-desorption method, especially for pesticides with low volatility and/or poor thermal stability presents some difficulties. This method was validated by the analysis of the contamination of atmosphere, through volatilisation by post-application processes, of atrazine in a parcel of 1 ha.

Dates et versions

hal-04061067 , version 1 (06-04-2023)

Identifiants

Citer

M. Clément, S. Arzel, Barbara Le Bot, René Seux, M. Millet. Adsorption/thermal desorption-GC/MS for the analysis of pesticides in the atmosphere. Chemosphere, 2000, 40 (1), pp.49-56. ⟨10.1016/S0045-6535(99)00230-1⟩. ⟨hal-04061067⟩
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