Electrospun composite nanofibers modified with silver nanoparticles for extraction of trace heavy metals from water and rice samples: An highly efficient and reproducible sorbent

Amini, Shima; Kandeh, Saeed Hejabri; Ebrahimzadeh, Homeira; Khodayari, Parisa

doi:10.1016/j.foodchem.2023.136122

Cited by 16 publications

(1 citation statement)

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“…Thus, stationary phases based on organometallic frameworks [ 2 ] and gold nanoparticles [ 3 ] are used for the chromatographic separation of optical isomers. Composite sorbents for the solid-phase extraction of metal ions [ 4 , 5 ], pesticides and insecticides [ 6 , 7 ], pharmaceutical substances [ 8 ], and toxins [ 9 , 10 ] with higher selectivity to target components compared to traditional synthetic and natural polymers have been proposed. Composite matrices are used in various chemical sensors, the response of which can be both electrochemical [ 11 , 12 ] and optical [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Composite “Crosslinked Polyvinyl Alcohol-Magnetite” as a Stimuli-Responsive Matrix for Optical Methods

Shchemelev,

Ivanov,

Ferapontov

2024

Molecules

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The preparation and application of the composite material “crosslinked polyvinyl alcohol—magnetite” as a sensitive matrix for use in digital colorimetry and optical micrometry methods are discussed. The material was synthesized in the form of spherical granules (for micrometry) and thin films (for digital colorimetry). The obtained composites were characterized by the registration of magnetization curves. It was shown that the amount of grown Fe3O4 particles in the polymer gel is in linear dependence with the iron salt concentrations in the impregnating solutions. The composite granules were applied to determining monosaccharides using optical micrometry. The optimal pH value for the total amount of monosaccharides’ determination was 8.6. The study of the analytical response of composite granules and films performed with a low limit of detection (7.9 mmol/dm3) of both glucose and fructose and a possibility of the control of high alcohol contention in water media. The granules were used to determine the total carbohydrate content in samples of natural honey and syrups with high fructose contents, while the films were used to control the alcohol content in hand antiseptics. The results obtained are in good agreement with the data provided by the manufacturers.

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