[Determination of dopamine hydrochloride by a reverse flow injection chemiluminescence method].
A novel chemiluminescence system coupled with a reverse flow injection analysis for the determination of dopamine hydrochloride was presented. It is based on th e strong quench effect of dopamine hydrochloride on the chemiluminescence reaction between luminol and hexacyanoferrate(III) under alkaline condition. Various factors affecting the chemiluminescence intensity of the system were investigated. The possible mechanism of the proposed method was also studied. The decrease of chemiluminescence intensity was linear with the dopamine hydrochloride content in the range of 2.0 x 10(-9) -8.0 x 10(-7) g x mL(-1), the detection limit of the method was 1.14 x 10(-9) g x mL(-1), and the relative standard deviation was 0.99% (4.0 x 10(-7) g x mL(-1), n = 11). It was successfully used for the determination of the content of dopamine hydrochloride in dopamine hydrochloride injection.
Wang
Shu-Hao
SH
Institute of Chemistry and Chemical Technology, Liaocheng University, Liaocheng 252059, China.
Du
Ling-Yun
LY
Wei
Xin-Ting
XT
Wang
Liang-Yu
LY
Zhuang
Hui-Sheng
HS
D004298:Dopamine / Q000032:analysis* / Q000737:chemistry / Q000592:standards; D005295:Ferrocyanides / Q000737:chemistry*; D017022:Flow Injection Analysis; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000737:chemistry; D049449:Luminescence; D008163:Luminescent Measurements / Q000295:instrumentation / Q000379:methods*; D008165:Luminol / Q000737:chemistry*; D017680:Potassium Compounds / Q000737:chemistry; D012015:Reference Standards; D015203:Reproducibility of Results; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods
D005295:Ferrocyanides; D006878:Hydroxides; D017680:Potassium Compounds; C116383:ferrocyn; D008165:Luminol; D004298:Dopamine; C029943:potassium hydroxide