Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry
In order to find a rapid, simple and sensitive method for determination of iodine in food, a gold nanoparticle modified electrode was constructed by cyclic voltammetry (CV) to detect iodine ion (I-). In situ reduction of gold nanoparticles (Mb@AuNPs) using methanobactin (Mb), and the self-assembled...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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The editorial department of Science and Technology of Food Industry
2022-01-01
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| Series: | Shipin gongye ke-ji |
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| Online Access: | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021030386 |
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| author | Linlin CHEN Tianjiao FAN Wei LI Fengming ZHENG Xiyao YANG Jiaxin ZHANG Jiaying XIN |
| author_facet | Linlin CHEN Tianjiao FAN Wei LI Fengming ZHENG Xiyao YANG Jiaxin ZHANG Jiaying XIN |
| author_sort | Linlin CHEN |
| collection | DOAJ |
| description | In order to find a rapid, simple and sensitive method for determination of iodine in food, a gold nanoparticle modified electrode was constructed by cyclic voltammetry (CV) to detect iodine ion (I-). In situ reduction of gold nanoparticles (Mb@AuNPs) using methanobactin (Mb), and the self-assembled modified electrode was preparaed by electrodeposition. Mb@AuNPs was characterized by transmission electron microscope (TEM), the electrochemical behavior of iodine ion (I-) was investigated by CV. The optimized conditions for iodine ion detection were as follows: Electrodeposition scanning rate 0.11 V/s, number of scanning cycles 30, buffer concentration 0.05 mol/L, buffer pH 6.5. There was a good linear relationship between oxidation peak current and I- concentration in the range of 0.01~10.00 μmol/L, R2 was 0.9992. The detection limit was 2.88 nmol/L (S/N), and the quantitation limit was 9.60 nmol/L. The recoveries of iodine content in different foods were 96.22%~103.57%. The results show that the modified electrode has good precision, stability, reproducibility and anti-interference ability for the determination of I-, which meets the requirements of the determination method and can be used for the determination of I- in practical samples. |
| first_indexed | 2024-04-11T17:37:20Z |
| format | Article |
| id | doaj.art-006f03bf84194a2e96d010500bef9e04 |
| institution | Directory Open Access Journal |
| issn | 1002-0306 |
| language | zho |
| last_indexed | 2024-04-11T17:37:20Z |
| publishDate | 2022-01-01 |
| publisher | The editorial department of Science and Technology of Food Industry |
| record_format | Article |
| series | Shipin gongye ke-ji |
| spelling | doaj.art-006f03bf84194a2e96d010500bef9e042022-12-22T04:11:35ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062022-01-0143128829410.13386/j.issn1002-0306.20210303862021030386-1Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic VoltammetryLinlin CHEN0Tianjiao FAN1Wei LI2Fengming ZHENG3Xiyao YANG4Jiaxin ZHANG5Jiaying XIN6College of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaCollege of Food Engineering, Harbin University of Commerce, Harbin 150028, ChinaIn order to find a rapid, simple and sensitive method for determination of iodine in food, a gold nanoparticle modified electrode was constructed by cyclic voltammetry (CV) to detect iodine ion (I-). In situ reduction of gold nanoparticles (Mb@AuNPs) using methanobactin (Mb), and the self-assembled modified electrode was preparaed by electrodeposition. Mb@AuNPs was characterized by transmission electron microscope (TEM), the electrochemical behavior of iodine ion (I-) was investigated by CV. The optimized conditions for iodine ion detection were as follows: Electrodeposition scanning rate 0.11 V/s, number of scanning cycles 30, buffer concentration 0.05 mol/L, buffer pH 6.5. There was a good linear relationship between oxidation peak current and I- concentration in the range of 0.01~10.00 μmol/L, R2 was 0.9992. The detection limit was 2.88 nmol/L (S/N), and the quantitation limit was 9.60 nmol/L. The recoveries of iodine content in different foods were 96.22%~103.57%. The results show that the modified electrode has good precision, stability, reproducibility and anti-interference ability for the determination of I-, which meets the requirements of the determination method and can be used for the determination of I- in practical samples.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021030386methanobactin (mb)gold nanoparticle (aunps)cyclic voltammetryelectrodeiodine ionself-assemble |
| spellingShingle | Linlin CHEN Tianjiao FAN Wei LI Fengming ZHENG Xiyao YANG Jiaxin ZHANG Jiaying XIN Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry Shipin gongye ke-ji methanobactin (mb) gold nanoparticle (aunps) cyclic voltammetry electrode iodine ion self-assemble |
| title | Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry |
| title_full | Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry |
| title_fullStr | Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry |
| title_full_unstemmed | Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry |
| title_short | Determination of Iodine in Food by Gold Nanoparticles Modified Electrode Cyclic Voltammetry |
| title_sort | determination of iodine in food by gold nanoparticles modified electrode cyclic voltammetry |
| topic | methanobactin (mb) gold nanoparticle (aunps) cyclic voltammetry electrode iodine ion self-assemble |
| url | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021030386 |
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