التفاصيل البيبلوغرافية
| العنوان: |
A rapid electrochemical monitoring platform for sensitive determination of thiamethoxam based on β -cyclodextrin-graphene composite |
| المؤلفون: |
Aijun Dong, Hua Zhang, Zhenyu Wang, Jing Wang, Haitian Zhao, Min Zhang, Cheng Gu, Xingchen Zhai, GuoPeng Zhou, Xin Yang |
| المصدر: |
Environmental Toxicology and Chemistry. 36:1991-1997 |
| بيانات النشر: |
Wiley, 2017. |
| سنة النشر: |
2017 |
| مصطلحات موضوعية: |
Detection limit, Graphene, Health, Toxicology and Mutagenesis, 010401 analytical chemistry, Inorganic chemistry, Analytical chemistry, Oxide, Beta-Cyclodextrins, 02 engineering and technology, Glassy carbon, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Electrochemical gas sensor, law.invention, chemistry.chemical_compound, chemistry, law, Environmental Chemistry, Brown rice, Thiamethoxam, 0210 nano-technology |
| الوصف: |
A rapid monitoring platform for sensitive voltammetric detection of thiamethoxam residues is reported in the present study. A β-cyclodextrin-reduced graphene oxide composite was used as a reinforcing material in electrochemical determination of thiamethoxam. Compared with bare glassy carbon electrodes, the reduction peak currents of thiamethoxam at reduced graphene oxide/glassy carbon electrode and β-cyclodextrin-reduced graphene oxide/glassy carbon electrode were increased by 70- and 124-fold, respectively. The experimental conditions influencing voltammetric determination of thiamethoxam, such as the amount of β-cyclodextrin-reduced graphene oxide, solution pH, temperature, and accumulation time, were optimized. The reduction mechanism and binding affinity of this material is also discussed. Under optimal conditions, the reduction peak currents increased linearly between 0.5 µM and 16 µM concentration of thiamethoxam. The limit of detection was 0.27 µM on the basis of a signal-to-noise ratio of 3. When the proposed method was applied to brown rice in a recovery test, the recoveries were between 92.20% and 113.75%. The results were in good concordance with the high-performance liquid chromatography method. The proposed method therefore provides a promising and effective platform for sensitive and rapid determination of thiamethoxam. Environ Toxicol Chem 2017;36:1991-1997. © 2017 SETAC. |
| تدمد: |
0730-7268 |
| DOI: |
10.1002/etc.3743 |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_________::9df00fc74d4694ad4637f93c8bdb44b3
https://doi.org/10.1002/etc.3743 |
| Rights: |
CLOSED |
| رقم الانضمام: |
edsair.doi...........9df00fc74d4694ad4637f93c8bdb44b3 |
| قاعدة البيانات: |
OpenAIRE |