Migration and characterisation of nanosilver from food containers by AF4-ICP-MS.
Food Chem
; 166: 76-85, 2015 Jan 01.
Article
de En
| MEDLINE
| ID: mdl-25053031
ABSTRACT
In this work, silver migration from commercial food containers was evaluated according to European Regulation 10/2011. Several experimental parameters affected silver release food simulant, temperature, exposition time and sampled bag area. Results demonstrated a significant silver nanoparticle (AgNP) migration into aqueous and acidic simulants. The amount of silver migrated increased with storage time and temperature although, in general, silver showed a low tendency to migrate into food simulants (17 ng/g). However, the food simulant did not seem to be a really outstanding variable for long term storage. AF(4)-ICP MS was used to confirm the presence of AgNPs in the simulants. The low limit of detection achieved (0.4 µg L(-1)) allowed the identification of AgNPs and their size characterisation (40-60 nm). Finally, scanning electron microscopy/energy-dispersive X-ray analysis suggested a possible transformation of the AgNPs detected in the extracts, due to association with other ligands, such as chlorine and sulphur, present in the original containers.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Argent
/
Microscopie électronique à balayage
/
Contamination des aliments
/
Emballage alimentaire
/
Nanoparticules
Type d'étude:
Prognostic_studies
Langue:
En
Journal:
Food Chem
Année:
2015
Type de document:
Article