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Powder microelectrode embedded with carboxyl multi-walled carbon nanotubes for sensitive and quantitative detection of nitrofuran residues
Analytical Methods ( IF 2.7 ) Pub Date : 2018-02-21 00:00:00 , DOI: 10.1039/c8ay00289d Bao-Shan He 1, 2, 3, 4 , Xiao-Ze Dong 1, 2, 3, 4
Analytical Methods ( IF 2.7 ) Pub Date : 2018-02-21 00:00:00 , DOI: 10.1039/c8ay00289d Bao-Shan He 1, 2, 3, 4 , Xiao-Ze Dong 1, 2, 3, 4
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In this study, a sensitive electrochemical detection method for nitrofurazone (NF) and semicarbazide (SC) based on a powder microelectrode embedded with carboxyl multi-walled carbon nanotubes was developed. The carboxyl groups were introduced to the multi-walled carbon nanotubes (MWCNTs) to increase the surface holes, which improve the MWCNTs’ electrocatalytic properties. Compared with traditional electrodes, the powder microelectrode (PME) has a small diameter. Therefore, it needs less time to complete the detection process. Under optimal experimental conditions, the obtained PME presented a linear response to NF in the range of 1 × 10−6 to 5 × 10−3 mol L−1 with a detection limit of 6.45 × 10−7 mol L−1. The linear range of SC was 2 × 10−6 to 1 × 10−3 mol L−1 with a detection limit of 1.18 × 10−7 mol L−1. The recoveries of NF and SC were 91.00–105.00% and 96.00–109.00%, respectively. The sensor could feasibly and successfully be used for the detection of nitrofuran drugs and their residues.
中文翻译：
嵌入羧基多壁碳纳米管的粉末微电极，用于灵敏和定量检测硝基呋喃残留物
在这项研究中，开发了一种基于羧基多壁碳纳米管的粉末微电极对呋喃西林和氨基脲的灵敏的电化学检测方法。将羧基引入多壁碳纳米管（MWCNT）中以增加表面空穴，从而改善了MWCNT的电催化性能。与传统电极相比，粉末微电极（PME）的直径较小。因此，它需要更少的时间来完成检测过程。在最佳实验条件下，所得PME对NF的线性响应范围为1×10 -6至5×10 -3 mol L -1，检测极限为6.45×10 -7 mol L -1。SC的线性范围为2×10 -6至1×10 -3 mol L -1，检测极限为1.18×10 -7 mol L -1。NF和SC的回收率分别为91.00-105.00％和96.00-109.00％。该传感器可以可行且成功地用于硝基呋喃药物及其残留物的检测。
更新日期：2018-02-21
中文翻译：
嵌入羧基多壁碳纳米管的粉末微电极，用于灵敏和定量检测硝基呋喃残留物
在这项研究中，开发了一种基于羧基多壁碳纳米管的粉末微电极对呋喃西林和氨基脲的灵敏的电化学检测方法。将羧基引入多壁碳纳米管（MWCNT）中以增加表面空穴，从而改善了MWCNT的电催化性能。与传统电极相比，粉末微电极（PME）的直径较小。因此，它需要更少的时间来完成检测过程。在最佳实验条件下，所得PME对NF的线性响应范围为1×10 -6至5×10 -3 mol L -1，检测极限为6.45×10 -7 mol L -1。SC的线性范围为2×10 -6至1×10 -3 mol L -1，检测极限为1.18×10 -7 mol L -1。NF和SC的回收率分别为91.00-105.00％和96.00-109.00％。该传感器可以可行且成功地用于硝基呋喃药物及其残留物的检测。
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