TY - JOUR
T1 - Determination of codeine and its metabolite in human urine by CE with amperometric detection
AU - Zhou, Tianshu
AU - Yu, Hui
AU - Hu, Qin
AU - Fang, Yuzhi
PY - 2002/8/22
Y1 - 2002/8/22
N2 - The amperometric detection of codeine and its metabolite, morphine following capillary zone electrophoretic separation is described. A carbon-disk electrode used as working electrode for two analytes exhibited a good response at 0.90 V (vs. Ag/AgCl). The optimal conditions of separation and detection were pH 8.4 phosphate buffer solution (0.06 mol l-1), 12 kV for the separation voltage, sample injection at 12 kV for 10 s. The linear ranges were from 3.1×10-7 to 2.5×10-5 mol l-1 for codeine and 1.9×10-7 to 1.5×10-5 mol l-1 for morphine with a correlation coefficient of 0.9996 and 0.9999, respectively. The detection limits for codeine and morphine were 1.6×10-7 and 6.8×10-8 mol l-1. The method developed was successfully applied to the determination of codeine and its metabolite, morphine in the human urine without any other sample pretreatment except filtration, and the results were satisfactory.
AB - The amperometric detection of codeine and its metabolite, morphine following capillary zone electrophoretic separation is described. A carbon-disk electrode used as working electrode for two analytes exhibited a good response at 0.90 V (vs. Ag/AgCl). The optimal conditions of separation and detection were pH 8.4 phosphate buffer solution (0.06 mol l-1), 12 kV for the separation voltage, sample injection at 12 kV for 10 s. The linear ranges were from 3.1×10-7 to 2.5×10-5 mol l-1 for codeine and 1.9×10-7 to 1.5×10-5 mol l-1 for morphine with a correlation coefficient of 0.9996 and 0.9999, respectively. The detection limits for codeine and morphine were 1.6×10-7 and 6.8×10-8 mol l-1. The method developed was successfully applied to the determination of codeine and its metabolite, morphine in the human urine without any other sample pretreatment except filtration, and the results were satisfactory.
KW - Amperometric detection
KW - Capillary zone electrophoresis
KW - Codeine
KW - Metabolite
KW - Morphine
UR - https://www.scopus.com/pages/publications/0037158501
U2 - 10.1016/S0731-7085(02)00019-5
DO - 10.1016/S0731-7085(02)00019-5
M3 - 文章
C2 - 12151061
AN - SCOPUS:0037158501
SN - 0731-7085
VL - 30
SP - 13
EP - 19
JO - Journal of Pharmaceutical and Biomedical Analysis
JF - Journal of Pharmaceutical and Biomedical Analysis
IS - 1
ER -