1.
Acta Nutrimenta Sinica
;
(6)1956.
Article
in Chinese
| WPRIM
| ID: wpr-549227
ABSTRACT
Copper and iron, chelated by cupferron and extracted by methyl-iso-butyl-ketone at pH 3.4-4.2, are enriched and the absorption signals of AAS are enhanced by the organic solvent, thus result in a smaller sample requirement (less than 100 mg hair) and a higher sensitivity (almost 20 times the original aqueous solution). The recoveries of zinc, copper and iron for human hair analysis are in the range of 98-106%, and the coefficients of variation are 0.6, 2.5 and 6.5% respectively. The recommended method is simple, easy to manipulate and suitable to medical application.