TY - JOUR
T1 - Determination of riboflavin in urine by capillary electrophoresis-blue light emitting diode-induced fluorescence detection combined with a stacking technique
AU - Su, An Kai
AU - Lin, Cheng Huang
N1 - Funding Information:
This work was supported by a grant from the National Science Council of Taiwan under contract no. NSC-90-2113-M-003-020.
PY - 2003/2/25
Y1 - 2003/2/25
N2 - A simple, inexpensive and reliable method for the simultaneous, routine analysis of riboflavin in urine by capillary electrophoresis-light emitting diode (LED)-induced fluorescence detection is described. Using a blue LED as the light source, the detection limit of riboflavin was determined to be 0.48 μg/ml and was improved to 20 ng/ml when a stacking technique was applied. In the analysis of an actual sample, various concentrations of riboflavin were distributed in the urine samples over a period of 9 h after the ingestion of a vitamin B2 tablet.
AB - A simple, inexpensive and reliable method for the simultaneous, routine analysis of riboflavin in urine by capillary electrophoresis-light emitting diode (LED)-induced fluorescence detection is described. Using a blue LED as the light source, the detection limit of riboflavin was determined to be 0.48 μg/ml and was improved to 20 ng/ml when a stacking technique was applied. In the analysis of an actual sample, various concentrations of riboflavin were distributed in the urine samples over a period of 9 h after the ingestion of a vitamin B2 tablet.
KW - Blue light emitting diode
KW - Riboflavin
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U2 - 10.1016/S1570-0232(02)00849-8
DO - 10.1016/S1570-0232(02)00849-8
M3 - Article
C2 - 12535836
AN - SCOPUS:0037465108
SN - 1570-0232
VL - 785
SP - 39
EP - 46
JO - Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
JF - Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
IS - 1
ER -