Evaluation of cryogenic impact grinding technique for powdering whole fish for metal determinations.
J Assoc Off Anal Chem
; 67(3): 589-93, 1984.
Article
en En
| MEDLINE
| ID: mdl-6746482
ABSTRACT
A cryogenic grinding technique, which involves brittle fracture of samples by impact pressure, was evaluated for the final reduction of whole-fish samples for subsequent metal determinations. The technique incorporated a number of desirable features protection of heat-labile components; incorporation of lyophilization to facilitate handling and storage; requirement of few procedural steps; short grinding time per sample; and easy, rapid cleanup of equipment. Particle size in the ground powder was less than 100 microns. Problems associated with the technique were contamination of fish samples with Cr, Fe, Mo, and Ni; limited size of the grinding container; and powder clumping caused by the presence of lipids. Approaches to alleviate these problems are discussed.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Productos Pesqueros
/
Metales
Límite:
Animals
Idioma:
En
Revista:
J Assoc Off Anal Chem
Año:
1984
Tipo del documento:
Article