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qch2010金虫 (小有名气)
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[求助]
急需英文摘要翻译成汉语，谢谢
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| In this paper, cyclodextrin–graphene hybrid nanosheets (CD–GNs) for the first time have been used as an enhanced material for ultrasensitive detection of carbendazim by electrochemistry method. The peak currents of carbendazim on the GNs modified glassy carbon electrode (GNs/GCE) and the CD–GNs/GCE are increased by 11.7 and 82.0 folds compared to the bare GCE, respectively. This indicates the nanocomposite film not only shows the excellent electrical properties of GNs but also exhibits high supramolecular recognition capability of CDs. At the CD–GNs/GCE, the peak currents increase linearly with the concentration of carbendazim in the range of 5 nM–0.45M. The detection limit of carbendazim reached to 2 nM on the basis of the signal-to-noise characteristics (S/N = 3) and the recoveries were between 98.9% and 104.5%. The developed electrochemical sensor exhibited good stability and reproducibility for the detection of carbendazim. And the CD–GNs based electrochemical sensor was also successfully demonstrated for the detection of carbendazim in water sample with satisfactory results. Furthermore, this simple sensing platform can in principle be extended to the detection of other benzimidazole fungicide which can form host–guest complexes with cyclodextrin. |
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phu_grassman
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Mally89: 金币+1, 感谢应助，欢迎常来哈！ 2012-06-21 19:57:25
qch2010: 金币+20, 翻译EPI+1 2012-06-22 12:07:49
Mally89: 金币+1, 感谢应助，欢迎常来哈！ 2012-06-21 19:57:25
qch2010: 金币+20, 翻译EPI+1 2012-06-22 12:07:49
| 这篇论文首次将环糊精-石墨烯杂化的纳米片作为电化学增强源用于多菌灵的高灵敏检测。多菌灵在GNs和CD-GNs修饰的玻碳电极的峰电流比无任何修饰的玻碳电极分别增强了11.7和82.0倍。这表明纳米复合物膜不仅具有GNs的极好的电学性能，还具有显示出环糊精极好的超分子识别能力。在CD–GNs/GCE上，峰电流随着多菌灵浓度（在5 nM–0.45 M间）呈线性增加，多灵菌的检测限达到2 nM(在信噪比为3的基础上)，回收率为98.9%-104.5%。这种改进的电化学传感器在多菌灵的检测中展现了良好的稳定性和重现性同时它也成功地用于水样中多菌灵的检测，并获得了满意的结果。此外，这种简单的传感平台原则上可以扩展到其他可以和环糊精形成主体-客体复合物的苯并咪唑类杀菌剂的检测。 |
2楼2012-06-20 20:41:53
