PMID- 23285977 OWN - NLM STAT- MEDLINE DCOM- 20130826 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 30 IP - 9 DP - 2012 Sep TI - [Simultaneous determination of chlorpromazine and promethazine and their main metabolites by capillary electrophoresis with electrochemiluminescence]. PG - 938-42 AB - Based on the phenomenon that each of chlorpromazine (CPZ), promethazine (PMZ), chlorpromazine sulfoxide (CPZSO) and promethazine sulfoxide (PMZSO) could enhance the electrochemiluminescence (ECL) intensity of tris(2,2'-bipyridyl) ruthenium, a novel and sensitive method was proposed for the simultaneous determination of CPZ, PMZ and their main metabolites using capillary electrophoresis (CE) coupled with ECL detection. The influences of several experimental parameters were explored. The optimum experimental conditions were as follows: detection potential of 1. 20 V (Ag/AgCl), 40 mmol/L of phosphate buffer solution (pH 6.5) containing 5 mmol/L tris(2,2'-bipyridyl) ruthenium in ECL detection cell, running buffer solution of 18 mmol/L (pH 4.8), sample injection of 8 s at 11 kV, and separation voltage of 13.5 kV. The detection limits (3sigma) of this method were 8.3 x 10(-7) g/L for CPZ, 7.2 x 10(-6) g/L for PMZ, 1.9 x 10(-5) g/L for CPZSO and 3.7 x 10(-6) g/L for PMZSO. The linear ranges of ECL intensity versus mass concentration of medicaments were 7. 1 x 10(-6) - 6. 3 x 10(-3) g/L for CPZ, 7.5 x 10(-5) - 4.6 x 10(-3) g/L for PMZ, 9.7 x 10(-5) - 3.6 x 10(-3) g/L for CPZSO and 8.1 x 10(-5) - 7.7 x 10(-3) g/L for PMZSO. The relative standard deviations (RSDs) of the four target compounds were not more than 3% for ECL intensity and 1% for migration time. This method has the merits of simplicity, speediness, sensitivity, small sample injection, and free from interference. This method was successfully utilized to directly and simultaneously detect CPZ, PMZ, CPZSO and PMZSO in urine samples of pet dogs. FAU - Li, Xufei AU - Li X AD - Biochemical Engineering College, Beijing Union University, Beijing 100023, China. FAU - Yang, Yanying AU - Yang Y FAU - Zhou, Kaowen AU - Zhou K LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 016U10PN9N (opromazine) RN - 7640-51-9 (promethazine sulfoxide) RN - FF28EJQ494 (Promethazine) RN - U42B7VYA4P (Chlorpromazine) SB - IM MH - Animals MH - Chlorpromazine/analogs & derivatives/*analysis/metabolism/urine MH - Dogs MH - Electrochemical Techniques/*methods MH - Electrophoresis, Capillary/*methods MH - *Luminescence MH - Promethazine/analogs & derivatives/*analysis/metabolism/urine EDAT- 2013/01/05 06:00 MHDA- 2013/08/27 06:00 CRDT- 2013/01/05 06:00 PHST- 2013/01/05 06:00 [entrez] PHST- 2013/01/05 06:00 [pubmed] PHST- 2013/08/27 06:00 [medline] AID - 10.3724/sp.j.1123.2012.04025 [doi] PST - ppublish SO - Se Pu. 2012 Sep;30(9):938-42. doi: 10.3724/sp.j.1123.2012.04025.