| Autor: |
Linlin CHEN, Jiaqi SONG, Ling WANG, Xiyao YANG, Fengming ZHENG, jiaxin ZHANG, Na ZHANG |
| Jazyk: |
čínština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Shipin gongye ke-ji, Vol 44, Iss 5, Pp 267-276 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1002-0306 |
| DOI: |
10.13386/j.issn1002-0306.2022040260 |
| Popis: |
Hydroquinone (HQ) was used to catalyze Methanobactin (Mb) to reduce chlorauric acid to prepare Gold Nanoparticles (AuNPs). Mb@AuNPs was modified onto the surface of a bare gold electrode via electrodeposition to prepare the Mb@AuNPs/Au electrode. Subsequently, differential pulse voltammetry was conducted for the simultaneous determination of nitrite and ascorbic acid concentrations as well as condition optimization. For the electrode assembly, electrodeposition was performed with a 0.20 mol/L and pH6.5 PBS at a 100 mV/s scan rate for 40 cycles. In the linear range of 2~5600 μmol/L and 1~6000 μmol/L, the oxidation peak current of both nitrite and ascorbic acid detected by Mb@AuNPs/Au showed a good linear relationship with the concentration (R2>0.9928), and the limit of detection (LOD) was 0.31 and 0.57 μmol/L, respectively. The recovery rates of standard addition for the actual samples were 92.59%~109.26%, 90.01%~103.51%. The method has good reproducibility and stability and can be used for simultaneous determination of nitrite and ascorbic acid in fruits and vegetables. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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