Powder microelectrode embedded with carboxyl multi-walled carbon nanotubes for sensitive and quantitative detection of nitrofuran residues

2018 ◽  
Vol 10 (11) ◽  
pp. 1372-1378 ◽  
Author(s):  
Bao-Shan He ◽  
Xiao-Ze Dong

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.

RSC Advances ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 14218-14224 ◽  
Author(s):  
Zai-Yu Li ◽  
Dan-Yang Gao ◽  
Zhi-Yong Wu ◽  
Shuang Zhao

A novel electrochemical sensor for the simultaneous detection of levodopa, paracetamol and l-tyrosine was developed based on multi-walled carbon nanotubes. The sensor has the merits of wide linear range, good selectivity and good reproducibility.


Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4081
Author(s):  
Hui Zhang ◽  
Pengcheng Nie ◽  
Zhengyan Xia ◽  
Xuping Feng ◽  
Xiaoxi Liu ◽  
...  

With the increase in demand, artificially planting Chinese medicinal materials (CHMs) has also increased, and the ensuing pesticide residue problems have attracted more and more attention. An optimized quick, easy, cheap, effective, rugged and safe (QuEChERS) method with multi-walled carbon nanotubes as dispersive solid-phase extraction sorbents coupled with surface-enhanced Raman spectroscopy (SERS) was first proposed for the detection of deltamethrin in complex matrix Corydalis yanhusuo. Our results demonstrate that using the optimized QuEChERS method could effectively extract the analyte and reduce background interference from Corydalis. Facile synthesized gold nanoparticles with a large diameter of 75 nm had a strong SERS enhancement for deltamethrin determination. The best prediction model was established with partial least squares regression of the SERS spectra ranges of 545~573 cm−1 and 987~1011 cm−1 with a coefficient of determination (R2) of 0.9306, a detection limit of 0.484 mg/L and a residual predictive deviation of 3.046. In summary, this article provides a new rapid and effective method for the detection of pesticide residues in CHMs.


2018 ◽  
Vol 5 (11) ◽  
pp. 2761-2771 ◽  
Author(s):  
Min Jiang ◽  
Hui-Ru Chen ◽  
Shan-Shan Li ◽  
Rui Liang ◽  
Jin-Huai Liu ◽  
...  

Selective detection of Pb2+ in rice phloem sap by a simple and effective method.


2019 ◽  
Vol 11 (4) ◽  
pp. 443-453 ◽  
Author(s):  
Pramod K. Kalambate ◽  
Yankai Li ◽  
Yue Shen ◽  
Yunhui Huang

A novel electrochemical sensor based on Pd@Pt/MWCNT composite for simultaneous detection of doxorubicin and dasatinib.


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