Simultaneous determination of clomipramine and four benzodiazepines in human plasma by HPLC-DAD after solid phase extraction
10.3969/j.issn.1001-1978.2015.04.028
- VernacularTitle:固相萃取－高效液相色谱法同时测定血浆中氯米帕明和4种苯二氮艹卓类药物浓度方法的研究
- Author:
Fuchun ZHENG
;
Ganggang SHI
- Publication Type:Journal Article
- Keywords:
solid phase extraction;
clomipramine;
diazepam;
oxazepam;
clonazepam;
alprazolam;
HPLC
- From:
Chinese Pharmacological Bulletin
2015;(4):582-585
- CountryChina
- Language:Chinese
-
Abstract:
Aim To establish a novel,highly sensitive,rapid and cost-effective HPLC method to simultaneously determine tri-cyclic antidepressant clomipramine and four benzodiazepines of diazepam,alprazolam,clonazepam,oxazepam in human plasma pretreated by solid phase extraction.Methods The assay was achieved by using C8 column (4.6 mm ×1 50 mm,5 μm)kept at 45 ℃,mobile phase 73.2:26.8 V/V (50 mmol·L -1 ,pH 3.0 phosphate buffer:acetonitrile)with flow rate of 1 .2 ml· min -1 ,and UV detection was set at λ220 nm.Solid phase ex-traction was performed on C1 cartridges.Results The calibra-tion curve was demonstrated to be linear (r >0.9994)in the ranges of 5 ~200 μg·L -1 for alprazolam and clonazepam,1 0 ~500 μg·L -1 for diazepam,20 ~500 μg· L -1 for clomipra-mine,and 7.5 ~2000 μg·L -1 for oxazepam;the limit of detec-tion (LOD)was 1 .5,1 .4,3.0,5.5 and 2.2 μg·L -1 for al-prazolam,clonazepam,diazepam,clomipramine and oxazepam respectively.Intra-day and inter-day precision revealed a coeffi-cient of variation of 2.2% ~1 2.6% and 2.1 % ~1 3.2%,re-spectively.Extraction yield ranged from 81 .1 % ~1 00.1 % for all analytes.Conclusion The developed method is accurate, reproducible,convenient,and suitable for routine therapeutic drug monitoring of clomipramine and the four benzodiazepines.
