Construction and application of electrochemical sensors for the detection of naphthol
A poly(L-cysteine)/graphene oxide composite modified glassy carbon naphthol electrode is constructed, which is used for simultaneous determination of 1-naphthol (1-NAP) and 2-naphthol (2-NAP). The electrochemical behavior of 1-NAP and 2-NAP on the modified electrode are investigated by cyclic voltam...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Hebei University of Science and Technology
2016-02-01
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| Series: | Journal of Hebei University of Science and Technology |
| Subjects: | |
| Online Access: | http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601007&flag=1&journal_ |
| _version_ | 1819169032033533952 |
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| author | Jujie REN Liujia LI Min CUI Miao ZHAI Congcong YU Xueping JI |
| author_facet | Jujie REN Liujia LI Min CUI Miao ZHAI Congcong YU Xueping JI |
| author_sort | Jujie REN |
| collection | DOAJ |
| description | A poly(L-cysteine)/graphene oxide composite modified glassy carbon naphthol electrode is constructed, which is used for simultaneous determination of 1-naphthol (1-NAP) and 2-naphthol (2-NAP). The electrochemical behavior of 1-NAP and 2-NAP on the modified electrode are investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and the conditions to modify the electrode and to detect naphthol isomers are optimized. The results show that the modified electrode has an excellent electrocatalytic activity in the oxidation of the naphthol in phosphate buffered solution of 0.1 mol/L PBS (pH 7.5). The difference of oxidation peak potential between 1-naphthol and 2-naphthol could reach 0182 V, which is almost large enough to achieve the simultaneous detection for 1-naphthol and 2-naphthol in a mixture solution. Under optimized experimental conditions, differential pulse voltammetry is adopted to detect naphthol isomer. It is found that the oxidation peak currents of 1-NAP and 2-NAP show a good linear relationship with the concentration in the range of 2~40 μmol/L and 1~40 μmol/L, respectively. The detection limits (S/N=3) for 1-NAP and 2-NAP are 0.19 μmol/L and 0.12 μmol/L, respectively. The modified electrode shows good stability and reproducibility and has strong anti-interference ability in the detection. The electrode is applied to determine 1-NAP and 2-NAP in real water samples, and the average recoveries are in the range of 98.9% to 101.7% and 97.7% to 102.1%, respectively. |
| first_indexed | 2024-12-22T19:13:03Z |
| format | Article |
| id | doaj.art-96bcb1f337314e4b9ad5a91fe6fcaf33 |
| institution | Directory Open Access Journal |
| issn | 1008-1542 |
| language | zho |
| last_indexed | 2024-12-22T19:13:03Z |
| publishDate | 2016-02-01 |
| publisher | Hebei University of Science and Technology |
| record_format | Article |
| series | Journal of Hebei University of Science and Technology |
| spelling | doaj.art-96bcb1f337314e4b9ad5a91fe6fcaf332022-12-21T18:15:37ZzhoHebei University of Science and TechnologyJournal of Hebei University of Science and Technology1008-15422016-02-01371394610.7535/hbkd.2016yx01007b201601005Construction and application of electrochemical sensors for the detection of naphtholJujie REN0Liujia LI1Min CUI2Miao ZHAI3Congcong YU4Xueping JI5School of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaBasic Medical College, Hebei Medical University, Shijiazhuang, Hebei 050017, ChinaA poly(L-cysteine)/graphene oxide composite modified glassy carbon naphthol electrode is constructed, which is used for simultaneous determination of 1-naphthol (1-NAP) and 2-naphthol (2-NAP). The electrochemical behavior of 1-NAP and 2-NAP on the modified electrode are investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and the conditions to modify the electrode and to detect naphthol isomers are optimized. The results show that the modified electrode has an excellent electrocatalytic activity in the oxidation of the naphthol in phosphate buffered solution of 0.1 mol/L PBS (pH 7.5). The difference of oxidation peak potential between 1-naphthol and 2-naphthol could reach 0182 V, which is almost large enough to achieve the simultaneous detection for 1-naphthol and 2-naphthol in a mixture solution. Under optimized experimental conditions, differential pulse voltammetry is adopted to detect naphthol isomer. It is found that the oxidation peak currents of 1-NAP and 2-NAP show a good linear relationship with the concentration in the range of 2~40 μmol/L and 1~40 μmol/L, respectively. The detection limits (S/N=3) for 1-NAP and 2-NAP are 0.19 μmol/L and 0.12 μmol/L, respectively. The modified electrode shows good stability and reproducibility and has strong anti-interference ability in the detection. The electrode is applied to determine 1-NAP and 2-NAP in real water samples, and the average recoveries are in the range of 98.9% to 101.7% and 97.7% to 102.1%, respectively.http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601007&flag=1&journal_electroanalytical chemistrynaphtholelectrochemical sensorpoly(L-cysteine)graphene oxide |
| spellingShingle | Jujie REN Liujia LI Min CUI Miao ZHAI Congcong YU Xueping JI Construction and application of electrochemical sensors for the detection of naphthol Journal of Hebei University of Science and Technology electroanalytical chemistry naphthol electrochemical sensor poly(L-cysteine) graphene oxide |
| title | Construction and application of electrochemical sensors for the detection of naphthol |
| title_full | Construction and application of electrochemical sensors for the detection of naphthol |
| title_fullStr | Construction and application of electrochemical sensors for the detection of naphthol |
| title_full_unstemmed | Construction and application of electrochemical sensors for the detection of naphthol |
| title_short | Construction and application of electrochemical sensors for the detection of naphthol |
| title_sort | construction and application of electrochemical sensors for the detection of naphthol |
| topic | electroanalytical chemistry naphthol electrochemical sensor poly(L-cysteine) graphene oxide |
| url | http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601007&flag=1&journal_ |
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