A Compact Dual-Sensor for Simultaneous Determination of Paraquat and Glyphosate Based on Graphite Screen-Printed Electrode Modified with Molecularly Imprinted Polymer Coating on a Mesoporous Silica-Platinum Core

2021 ◽  
Author(s):  
Suphatsorn Thimoonnee ◽  
Kanpitcha Somnet ◽  
Pattanun Ngaosri ◽  
Sanoe Chairam ◽  
Chanpen Karuwan ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Simultaneous Determination ◽  
Molecularly Imprinted Polymer ◽  
Polymer Coating ◽  
Imprinted Polymer ◽  
Screen Printed Electrode ◽  
Molecularly Imprinted ◽  
Dual Sensor ◽  
Screen Printed

Ready-to-use paraquat sensor using a graphene-screen printed electrode modified with a molecularly imprinted polymer coating on a platinum core

The Analyst ◽  
2021 ◽  
Vol 146 (20) ◽  
pp. 6270-6280
Author(s):  
Kanpitcha Somnet ◽  
Suphatsorn Thimoonnee ◽  
Chanpen Karuwan ◽  
Wichayaporn Kamsong ◽  
Adisorn Tuantranont ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymer ◽  
Polymer Coating ◽  
Cost Effective ◽  
Imprinted Polymer ◽  
Screen Printed Electrode ◽  
Molecularly Imprinted ◽  
Graphene Electrode ◽  
Screen Printed

A novel ready-to-use sensor using a PtNPs@MIP modified screen-printed graphene electrode for sensitive, selective and cost-effective paraquat determination is presented.

Molecularly imprinted polymer for selective extraction and simultaneous determination of four tropane alkaloids from Przewalskia tangutica Maxim. fruit extracts using LC-MS/MS

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94997-95006 ◽  
Author(s):  
Shaomei Zeng ◽  
Yongxin She ◽  
Bining Jiao ◽  
Guangyang Liu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Molecularly Imprinted Polymer ◽  
Tropane Alkaloids ◽  
Selective Extraction ◽  
Functional Monomer ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Fruit Extracts ◽  
Przewalskia Tangutica

A class-specific molecularly imprinted polymer (MIP) for selectively extracting four tropane alkaloids has been prepared using anisodine, methacrylic, and trimethylolpropane trimethacrylate as template, functional monomer and crosslinker, respectively.

Simultaneous Determination of 11 Aminoglycoside Residues in Honey, Milk, and Pork by Liquid Chromatography with Tandem Mass Spectrometry and Molecularly Imprinted Polymer Solid Phase Extraction

2017 ◽  
Vol 100 (6) ◽  
pp. 1869-1878 ◽  
Author(s):  
Bixia Yang ◽  
Lian Wang ◽  
Chunying Luo ◽  
Xixi Wang ◽  
Chengjun Sun
Keyword(s):  
Simultaneous Determination ◽  
Molecularly Imprinted Polymer ◽  
Solid Phase ◽  
Potassium Dihydrogen Phosphate ◽  
Dihydrogen Phosphate ◽  
Imprinted Polymer ◽  
Ionization Source ◽  
Molecularly Imprinted ◽  
Potassium Dihydrogen

Abstract An analytical method was developed for the simultaneous determination of 11 aminoglycoside (AG) antibiotics, including amikacin, paromomycin, dihydrostreptomycin, gentamicin C1a, hygromycin, kanamycin, netilmicin, spectinomycin, sisomicin, streptomycin, and tobramycin in honey, milk, and pork samples by LC with tandem MS and molecularly imprinted polymer (MIP) SPE. The AG antibiotics in milk and homogenated meat samples were extracted with a solution composed of 10 mmol/L potassium dihydrogen phosphate, 0.4 mmol/L EDTA-Na2, and 2% trichloroacetic acid. For honey samples, the extractant was 50 mmol/L potassium dihydrogen phosphate. The extracts were cleaned up with MIP SPE cartridges. The separation was performed on a zwitter ionic-HILIC column (50 × 2.1 mm, 3.5 μm), with the mobile phase consisting of methanol, 0.3% formic acid, and 175 mmol/L ammonium formate at 0.50 mL/min in gradient elution. A triple-quadrupole mass spectrometer equipped with an electrospray ionization source, which was operated in positive mode, was used for detection. The quantification was based on matrix-matched calibration curves. The method was applied to real samples with three different matrixes. The LODs of the method were 2–30 μg/kg and the LOQs were 7–100 μg/kg; the average recovery ranged from 78.2 to 94.8%; intraday RSDs and interday RSDs were ≤15 and ≤18%, respectively; and the absolute values of matrix effect for all AGs were RSDs ≤23%.

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