Certification of total arsenic, dimethylarsinic acid and arsenobetaine contents in a tuna fish powder (BCR-CRM 627)

Citation
F. Lagarde et al., Certification of total arsenic, dimethylarsinic acid and arsenobetaine contents in a tuna fish powder (BCR-CRM 627), FRESEN J AN, 363(1), 1999, pp. 18-22
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
0937-0633 → ACNP
Volume
363
Issue
1
Year of publication
1999
Pages
18 - 22
Database
ISI
SICI code
0937-0633(19990101)363:1<18:COTADA>2.0.ZU;2-V
Abstract
Tuna fishes were collected in the Straits of Messina (Italy), were dissecte d and dorsal muscles minced, freeze-dried, ground and sieved. The obtained powder was stabilised by gamma-irradiation and filled into brown glass bott les. The homogeneity and stability at +20 degrees C and +40 degrees C were verified with regards to the total arsenic, dimethylarsinic acid and arseno betaine contents. Ten laboratories participated in the certification study. All participants had demonstrated beforehand their ability to produce accu rate results for the As speciation in fish tissue. The certified values are : total arsenic (4.8 +/- 0.3) mg/kg, arsenobetaine (52 +/- 3) mu mol/kg, di methylarsinic acid (2.0 +/- 0.3) mu mol/kg. The material is available from the BCR since early 1998.