Determination of glyphosate in soil samples using CdTe/CdS quantum dots in capillary electrophoresis

Muñoz, Raybel; Guevara-Lara, Alfredo; Santos, João L.M.; Miranda, José M.

doi:10.1016/j.microc.2019.01.059

Cited by 29 publications

(14 citation statements)

References 26 publications

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“…The LOD was calculated according to the IUPAC criteria as 3.0 times se/b1 and the LOQ was determined as 10 times se/b1 where se is the square root of the residual variance of the standard curve and b1 is the analytical sensitivity. The LOD values achieved by the proposed methodology is sufficient for the determination of compounds (Muñoz et al, 2019). The precision of the method, which includes the intra and inter day…”

Section: Analytical Performance and Validationmentioning

confidence: 91%

Simultaneous determination of paracetamol, dextromethorphan, chlorpheniramine, pseudoephedrine and major impurities of paracetamol and pseudoephedrine by using capillary electrophoresis

Yener

Erkmen

Uslu

et al. 2022

Braz. J. Pharm. Sci.

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A capillary electrophoresis method was developed for the first time and optimized for the determination of paracetamol, pseudoephedrine, dextromethorphan, chlorpheniramine, 4-aminophenol and ephedrine in tablet formulation. Optimum electrophoretic conditions were achieved by using a background electrolyte of 75 mmol L -1 sodium borate buffer at pH 8.0, a capillary temperature of 30°C, a separation voltage of 30 kV and a pressure injection of the sample at 50 mbar for 10 s. Calibration graphs showed a good linearity with a coefficient of determination (R 2 ) of at least 0.999 for all compounds. Intraday and interday precision (expressed as relative standard deviation (RSD) %) were lower than 1.39% for capillary electrophoresis method. The developed method was demonstrated to be simple and rapid for the determination of paracetamol, pseudoephedrine, dextromethorphan, chlorpheniramine, 4-aminophenol and ephedrine in tablet formulation providing recoveries in the range between 99.62 and 100.57% for all analytes.

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Section: Analytical Performance and Validationmentioning

confidence: 91%

Simultaneous determination of paracetamol, dextromethorphan, chlorpheniramine, pseudoephedrine and major impurities of paracetamol and pseudoephedrine by using capillary electrophoresis

Yener

Erkmen

Uslu

et al. 2022

Braz. J. Pharm. Sci.

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show abstract

“…Munoz, Guevara‐Lara, Santos, Miranda, and Rodriguez (2019) determined glyphosate using a capillary electrophoresis system with CdTe/CdS quantum dots. The formation of quantum dots–glyphosate complex enhanced the emission signal in fluorescence spectroscopy.…”

Section: Chemiluminescence and Fluorescence Methodsmentioning

confidence: 99%

Analytical methods to analyze pesticides and herbicides

Begum

Xue

2020

Water Environment Research

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This paper reviews studies published in 2019, in the area of analytical techniques for determination of pesticides and herbicides. It should be noted that some of the reports summarized in this review are not directly related to but could potentially be used for water environment studies. Based on different methods, the literatures are organized into six sections, namely extraction methods, electrochemical techniques, spectrophotometric techniques, chemiluminescence and fluorescence methods, chromatographic and mass spectrometric techniques, and biochemical assays.

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“…A number of approaches have been adopted to detect the OPs as mentioned in the Table 1 . Detection of OP compounds has been traditionally performed with analytical methods such as gas chromatography (GC) [ 9 ], high-performance liquid chromatography (HPLC) [ 10 ], capillary electrophoresis [ 11 ], surface plasmon resonance [ 12 ], fluorimetry [ 13 ], and spectroscopic methods [ 14 , 15 ]. Although these techniques have been standardized, none of these methods is suitable for on-site monitoring and rapid detection of OPs [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Detection of Organophosphate Pesticides Based on Acetylcholinesterase and Cysteamine Capped Gold Nanoparticles as Nanozyme

Shah

Ren

Irudayaraj

et al. 2021

Sensors

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Organophosphates (OPs) are neurotoxic agents also used as pesticides that can permanently block the active site of the acetylcholinesterase (AChE). A robust and sensitive detection system of OPs utilising the enzyme mimic potential of the cysteamine capped gold nanoparticles (C-AuNPs) was developed. The detection assay was performed by stepwise addition of AChE, parathion ethyl (PE)-a candidate OP, acetylcholine chloride (ACh), C-AuNPs, and 3, 3′, 5, 5′-tetramethylbenzidine (TMB) in the buffer solution. The whole sensing protocol completes in 30–40 min, including both incubations. The Transmission Electron Microscopy (TEM) results indicated that the NPs are spherical and have an average size of 13.24 nm. The monomers of C-AuNPs exhibited intense catalytic activity (nanozyme) for the oxidization of TMB, revealed by the production of instant blue colour and confirmed by a sharp peak at 652 nm. The proposed biosensor’s detection limit and linear ranges were 5.8 ng·mL−1 and 11.6–92.8 ng·mL−1, respectively, for PE. The results strongly advocate that the suggested facile colorimetric biosensor may provide an excellent platform for on-site monitoring of OPs.

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Determination of glyphosate in soil samples using CdTe/CdS quantum dots in capillary electrophoresis

Cited by 29 publications

References 26 publications

Simultaneous determination of paracetamol, dextromethorphan, chlorpheniramine, pseudoephedrine and major impurities of paracetamol and pseudoephedrine by using capillary electrophoresis

Simultaneous determination of paracetamol, dextromethorphan, chlorpheniramine, pseudoephedrine and major impurities of paracetamol and pseudoephedrine by using capillary electrophoresis

Analytical methods to analyze pesticides and herbicides

Colorimetric Detection of Organophosphate Pesticides Based on Acetylcholinesterase and Cysteamine Capped Gold Nanoparticles as Nanozyme

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