[Selective quantitation of analgin by flow injection chemiluminescence method].
A new chemiluminescence-based method was proposed for selective quantitation of analgin in pharmaceutical preparation. The CL emission was generated by mixing analgin, polyethylene glycol-400 and rhodamine 6G in acidic medium. The analgin content could be determined by the CL intensity. No oxidants were used in the system, so it was difficult to explain why the CL emission was produced. The mechanism of CL emission remains under investigation. One of the advantages of this method is highly selective. No other pharmaceutical compounds and chemicals could produce CL emission whether they contain sulfuric group or not in the experiment. There was no disturbance in this method, which was different from others. Another advantage is high sensitivity. The quantitation range is from 0.01 to 10 microg x mL(-1) with a detection limit of 0.003 microg x mL(-1) for analgin. This is the lowest detection limit of any CL methods currently available for analgin determination. The proposed method was applied to the selective quantitation of analgin in pharmaceutical preparation.
Yang
Feng-zhen
FZ
Department of Chemistry, Cangzhou Teachers College, Cangzhou 061001, China.
Zhang
Chao
C
Wang
Jian-ning
JN
Zhang
Xin-rong
XR
D004177:Dipyrone / Q000032:analysis* / Q000737:chemistry; D017022:Flow Injection Analysis / Q000379:methods*; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods*; D004364:Pharmaceutical Preparations; D011092:Polyethylene Glycols / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry
D004364:Pharmaceutical Preparations; D012235:Rhodamines; C026188:rhodamine 6G; D011092:Polyethylene Glycols; D004177:Dipyrone