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Trace determination of shiomarin using a hanging copper/amalgam drop electrode
1Department of Hygeian Analytical Chemistry, Nantong Medical College, Nantong 226001, People's Republic of China. ghaiying@pub.nt.jsinfo.net
Journal of Pharmaceutical and Biomedical Analysis
|June 14, 2002
Summary
This study details a new electrochemical method for detecting shiomarin (moxalactam) using a copper/amalgam electrode. The method accurately quantifies trace amounts of this antibiotic in various samples.
Area of Science:
- Electrochemistry
- Analytical Chemistry
Background:
- Shiomarin (moxalactam) is a crucial antibiotic.
- Sensitive detection methods are vital for pharmaceutical quality control and clinical monitoring.
Purpose of the Study:
- To investigate the electrochemical behavior of shiomarin.
- To develop a sensitive method for determining shiomarin concentrations.
Main Methods:
- Electrochemical analysis using a hanging copper/amalgam drop electrode (HCADE).
- Differential pulse adsorptive cathodic stripping voltammetry (DPAdCSV).
Main Results:
- Shiomarin forms a complex with Cu(II) and adsorbs onto the HCADE surface.
- A linear relationship was observed between peak current and shiomarin concentration.
- The method achieved a wide linear range (1.0 x 10(-9) to 8.0 x 10(-5) M) and a low detection limit (4.0 x 10(-10) M).
Conclusions:
- The developed DPAdCSV method is effective for trace shiomarin determination.
- The method demonstrated satisfactory results for shiomarin in injection powder and urine samples.
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