Comparison of two analytical methods for the determination of organotin compounds in marine organisms - 09/07/09
Correspondence at: Department of Chemistry and Industrial Chemistry, Via Dodecaneso 31, 16146 Genoa, Italy.Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
| pages | 10 |
| Iconographies | 6 |
| Vidéos | 0 |
| Autres | 0 |
Abstract |
Two analytical procedures were used for the determination of butyltin compounds in mussels.
Both methods include extraction with methanol containing tropolone, derivatization, purification on Florisil and GC–MS analysis. The main difference between the procedures is in the derivatization step: one employs a Grignard reagent (n-pentylmagnesium bromide) while the other uses sodium tetraethylborate (STEB).
Quantitative determinations were carried out in single ion monitoring using tripropyltin as internal standard. The accuracy of the procedures was verified on a certified reference material (ERM 477), providing good results for both methods.
All the considered compounds showed lower detection limits with STEB derivatization; in particular for tributyltin (TBT), the difference between the two methods overcame one order of magnitude.
An in vivo experiment was then performed, exposing mussels (Mytilus galloprovincialis) to known amount of TBT for 7 days; control and contaminated tissues were analyzed using the STEB derivatization method. Results showed the accumulation of TBT, especially in the gills.
Le texte complet de cet article est disponible en PDF.Keywords : GC–MS, Organotin compounds, Derivatization, Mytilus galloprovincialis
Plan
Vol 12 - N° 8
P. 831-840 - août 2009 Retour au numéro
Article précédent
- 4èmes Journées franco-italiennes de chimie : Environnement et développement durable
- Sylvain Antoniotti
- Electroepoxidation of natural and synthetic alkenes mediated by sodium bromide
- Massuquinini Inês, António J. Mendonça, Ana P. Esteves, Dina I. Mendonça, Maria J. Medeiros
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?