A high-performance liquid chromatographic (HPLC) procedure for determining 25 -hydroxycholecalciferol contents in chicken egg yolk has been developed. The procedure consists of the following steps: saponification. extraction of the unsaponifiable fraction, purification using solidphase extraction, c
β¦ LIBER β¦
Determination of streptomycin in eggs yolk by capillary electrophoresis
β Scribed by P. Kowalski; I. Oledzka; P. Okoniewski; M. Switala; H. Lamparczyk
- Publisher
- Springer
- Year
- 1999
- Tongue
- English
- Weight
- 375 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0009-5893
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## Abstract Creatinine in human serum was separated in a fusedβsilica capillary with H~3~PO~4~ (75Β mmol/L, pHΒ 2.5) as BGE, followed by UV detection at 200Β nm. Serum with methylimidazole added as internal standard was deproteinized with acetonitrile and the supernatant, after dilution with water was