Impregnated silica-based layers in thin layer chromatography

Sobańska, Anna W.

doi:10.1080/10826076.2020.1725554

Cited by 7 publications

(3 citation statements)

References 128 publications

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“…In this work, we concerned with developing a simple and economic method for selective detection of IMD and DLM residue levels in real samples without any interference. TLC separation is known to be enhanced by impregnation [ 26 ]. Nanoparticles have proven excellent results in this context [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

et al. 2023

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Two thin layer chromatography (TLC) methods have been developed for the determination of pesticides residues of imidacloprid (IMD) and deltamethrin (DLM) in thyme and guava leaves. In the two methods, the used stationary phase was silica gel 60 F254 plates impregnated in chitosan nanoparticles (ChTNPs) 0.5% to improve separation using a green developing system consists of isopropyl alcohol for IMD and n-hexane-toluene-ethylacetate for DLM. The two pesticides were determined quantitatively, after TLC separation, at wavelengths 270.0 nm for IMD and 230.0 nm for DLM. Validation of both approaches was carried out in agreement with the guidelines of International Conference on Harmonization (ICH) and found to be selective, reliable and reproducible. Limits of detection of IMD and DLM were 0.002 and 0.00116 μg/spot, respectively. The newly developed TLC methods were used to monitor the pre-harvest interval estimation. Analytical eco-scaling depending on penalty points for IMD was calculated and showed that this method was eco-friendlier than the reported one. Graphical Abstract

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Section: Resultsmentioning

confidence: 99%

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

et al. 2023

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“…In addition to copper (II), zinc (II), mercury (II), and silica gel impregnated with α-chitin and α-chitosan can be used to isolate AAs and their derivatives. Chiral TLC plates impregnated with a CS are currently an effective way to directly separate chiral compounds [ 128 ]. In recent years, some researchers have applied TLC to the separation of chiral compounds.…”

Section: Chromatographic Separationmentioning

confidence: 99%

Chiral Recognition for Chromatography and Membrane-Based Separations: Recent Developments and Future Prospects

et al. 2021

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With the rapid development of global industry and increasingly frequent product circulation, the separation and detection of chiral drugs/pesticides are becoming increasingly important. The chiral nature of substances can result in harm to the human body, and the selective endocrine-disrupting effect of drug enantiomers is caused by differential enantiospecific binding to receptors. This review is devoted to the specific recognition and resolution of chiral molecules by chromatography and membrane-based enantioseparation techniques. Chromatographic enantiomer separations with chiral stationary phase (CSP)-based columns and membrane-based enantiomer filtration are detailed. In addition, the unique properties of these chiral resolution methods have been summarized for practical applications in the chemistry, environment, biology, medicine, and food industries. We further discussed the recognition mechanism in analytical enantioseparations and analyzed recent developments and future prospects of chromatographic and membrane-based enantioseparations.

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“…However, for screening and identification purposes, TLC methods are still being used in many laboratories [19,25,26] as sample clean-up is either simple or not required. Silica gel is the most common stationary phase in the TLC of herbicides [27,30,31]. Therefore to detect the presence of herbicide residues in agricultural commodities in a complex paddy environment under acceptable daily intakes (ADI) fixed by the Joint Meeting on Pesticide Residues, a new simultaneously analytical method was developed for the quick detection of pyrazosulfuron-ethyl, pretilachlor, cyhalofop-p-butyl, penoxsulam, ethoxysulfuron and triafamone residues in the soil, rice grain and straw samples by TLC-UV technique.…”

Section: Introductionmentioning

confidence: 99%

A new multiresidue thin layer chromatography–ultraviolet detection method for the rapid determination of six herbicides residue applied as ready mix formulation for rice

Sondhia

2023

Separation Science Plus

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The purpose of this study was to develop a new multiresidue thin‐layer chromatography analysis method for the simultaneous analysis of herbicides in soil and plant samples. A new liquid‐liquid extraction method was also developed for the extraction and identification of herbicides from the soil, rice grain, and straw samples. The thin layer chromatography‐ultra violet technique with silica gel 60 F254 thin layer chromatography plates, using a solvent system consisting of ethyl acetate, hexane, benzene, and methanol was found to be most effective in simultaneous separation and identification of all herbicides with retention factor in the range of 0.21–0.91. The impurities and matrix effects from soil, water, grain, and straw were minimal and did not interfere with the identification of any targeted herbicide. The method developed is found suitable to detect residues of herbicides in the soil, rice grains, and straw samples with a limit of determination of 0.1–0.01 mg/kg. The validation parameters of the developed method were satisfactory and therefore can be successfully used for the simultaneous determination of the herbicides in the soil, water, and plant samples. This method can also be used to determine these herbicides in other environmental samples as well as in Forensic analysis of biological/non‐biological samples.

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Impregnated silica-based layers in thin layer chromatography

Cited by 7 publications

References 128 publications

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

Chiral Recognition for Chromatography and Membrane-Based Separations: Recent Developments and Future Prospects

A new multiresidue thin layer chromatography–ultraviolet detection method for the rapid determination of six herbicides residue applied as ready mix formulation for rice

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