Fluorometric determination of retinol in human tear fluid using high-performance liquid chromatography
作者:
SpeekAndries J.,
van AgtmaalEric J.,
SaowakonthaSastri,
SchreursWil H.P.,
van HaeringenNicolaas J.,
期刊:
Current Eye Research
(Taylor Available online 1986)
卷期:
Volume 5,
issue 11
页码: 841-845
ISSN:0271-3683
年代: 1986
DOI:10.3109/02713688609029235
出版商: Taylor&Francis
数据来源: Taylor
摘要:
A fast and sensitive high-performance liquid chromatographic (HPLC) method for the determination of vitamin A (all-trans retinol) in 50μ1 human tear fluid is described. After deproteinization with ethanol and extraction with n-hexane, retinol is separated from the extract on a straight-phase HPLC column and detected fluorometrically. Vitamin A can be determined in concentrations as low as 0.4 ng/ml. A single analysis can be completed in 12 min while the analysis of a series of 60 samples takes about 8 h. The within-assay and between-assay coefficients of variation were 3.1 and 4.2 % resp. The between-assay analytical recovery of retinol added to tear fluid was 97.4±6.0 % (mean±SD). Retinol was determined in tear fluid of nine adult volunteers. The amounts observed ranged from<0.4 - 10.6 ng/ml.
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