| Autor: |
Surudee Treetepvijit, Narong Praphairaksit, Suchada Chuanuwatanakul, Yasuaki Einaga, Anchana Preechaworapun, Orawon Chailapakul |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
Talanta. 68:1329-1335 |
| ISSN: |
0039-9140 |
| DOI: |
10.1016/j.talanta.2005.07.047 |
| Popis: |
The electrochemical analysis of tetracyclines was investigated using nickel-implanted boron-doped diamond thin film electrode (Ni-DIA) by cyclic voltammetry and high performance liquid chromatographic with amperometry. Cyclic voltammetry was used to study the electrochemical oxidation of tetracyclines. Comparison experiments were carried out utilizing as-deposited BDD and glassy carbon electrodes. Ni-DIA electrode provided well-resolved oxidative irreversible cyclic voltammograms and the highest current signals among the electrode studied. High performance liquid chromatography (HPLC) with amperometric detection was also studied. The chromatography was performed using a commercially available Inertsil C18 column, with the mobile phase being: 80% phosphate buffer (pH 2.5)–20% acetonitrile and detected at 1.55 V. The methods were validated over the concentration range 0.05–100 ppm with the overall average recoveries from 83.3 to 102.5% and R.S.D. of less than 10%. The proposed method was further applied to analyse shrimp samples. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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