Application of solvent-assisted dispersive solid phase extraction combined with flame atomic absorption spectroscopy for the determination of trace amounts of Cadmium

Khorasani, Raziyeh; Dindarloo, Kavoos; Heidari, Mohsen; Behbahani, Mohammad; Rahmanian, Omid

doi:10.18869/acadpub.hmj.20.6.383

Cited by 3 publications

(3 citation statements)

References 26 publications

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“…In the SPE process, the synthesis of adsorbents is the fundamental issue since the type and amount of absorbance largely determine selectivity, sensitivity, and full recovery. In general, properties with large surface areas, active surface locations, and a short propagation path can provide a significant number of improvements in extraction kinetics [ 59 ]. Compared with conventional adsorbents, nanoscale metal oxides have attracted more interest from researchers in recent years, given their high surface area and rapid absorption kinetics.…”

Section: Resultsmentioning

confidence: 99%

Development of a Solid-Phase Extraction (SPE) Cartridge Based on Chitosan-Metal Oxide Nanoparticles (Ch-MO NPs) for Extraction of Pesticides from Water and Determination by HPLC

Badawy

El-Nouby

Marei

2018

International Journal of Analytical Chemistry

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The present study aims to prepare two new types of chitosan-metal oxide nanoparticles (Ch-MO NPs), namely, chitosan-copper oxide nanoparticles (Ch-CuO NPs) and chitosan-zinc oxide nanoparticles (Ch-ZnO NPs), using sol-gel precipitation mechanism, and test them new as adsorbent materials for extraction and clean-up of different pesticides from water. The design of core-shell was implemented by metal oxide core with chitosan as a hard shell after crosslinking mechanism by glutaraldehyde and then epichlorohydrin. The characterizations of the prepared nanoparticles were investigated using Fourier transform infrared spectrometry (FT-IR), zeta potential, scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). FT-IR confirmed the interaction between chitosan, metal oxide, and crosslinking mechanism. SEM and TEM explained that the nanoparticles have a spherical morphology and nanosize of 93.74 and 97.95 nm for Ch-CuO NPs and Ch-ZnO NPs, respectively. Factorial experimental design was applied to study the effect of pH, concentration of pesticide, agitation time, and temperature on the efficiency of adsorption of pesticides from water samples. The results indicated that optimum conditions were pH of 7, temperature of 25°C, and agitation time of 25 min. The SPE cartridges were then packed with Ch-MO NPs, and seven pesticides of abamectin, diazinon, fenamiphos, imidacloprid, lambda-cyhalothrin, methomyl, and thiophanate-methyl were extracted from water samples and determined by HPLC. The extraction efficiency of Ch-ZnO NPs was higher than Ch-CuO NPs, but both removed a larger amount of most of tested pesticides than the standard ODS cartridge (C18). The results showed that this method achieves rapid and simple extraction in small quantities of adsorbents (Ch-MO NPs) and solvents. In addition, the method is highly sensitive to pesticides and has a high recovery rate.

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Section: Resultsmentioning

confidence: 99%

Development of a Solid-Phase Extraction (SPE) Cartridge Based on Chitosan-Metal Oxide Nanoparticles (Ch-MO NPs) for Extraction of Pesticides from Water and Determination by HPLC

Badawy

El-Nouby

Marei

2018

International Journal of Analytical Chemistry

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“…SPE has become one of the most extensively used technique for numerous samples [31,32]. This technology has many advantages, such as easy operation, high enhancement factor, fast separation phase, effective matrix interference, maximum recovery, minimum solvents consumption and cost-effective [33,34].…”

Section: Resultsmentioning

confidence: 99%

A Comparative Evaluation of the Antiproliferative Activity against HepG2 Liver Carcinoma Cells of Plant-Derived Silver Nanoparticles from Basil Extracts with Contrasting Anthocyanin Contents

et al. 2019

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Nanotechnology is a well-established and revolutionized field with diverse therapeutic properties. Several methods have been employed using different reducing agents to synthesize silver nanoparticles (AgNPs). Chemical mediated synthetic methods are toxic and resulted in non-desired effects on biological systems. Herein, we, synthesized silver nanoparticles using callus extract of purple basil (BC-AgNPs) and anthocyanin extract deriving from the same plant (i.e. purple basil) (AE-AgNPs), and systematically investigated their antiproliferative potential against HepG2 Liver Carcinoma Cells. The phyto-fabricated AgNPs were characterized by different techniques like UV–visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM) and Energy dispersive X-rays (EDX). Morphologically, both types of NPs were found spherical. The average size of BC-AgNPs and AE-AgNPs as revealed through XRD and SEM analyses were calculated as 50.97 ± 0.10 nm and 42.73 ± 1.24 nm, respectively. FT-IR spectral analysis demonstrates the existence of possible phytochemicals required for the capping and reduction of Ag ions. Herein, following solid phase extraction (SPE) coupled to HPLC analysis, we report for the first-time the anthocyanin mediated synthesis of AgNPs and conforming the successful capping of anthocyanin. Small sized AE-AgNPs showed significant cytotoxic effect against human hepatocellular carcinoma (HepG2) cell line as compared to BC-AgNPs. Therefore, the results revealed that the prevalent group of flavonoids present in purple basil is the anthocyanins and AE-AgNPs could be employed as potential anticancer agents in future treatments strategies.

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“…SPE became one of the most widely used methods in extraction and pre‐concentration of various environmental samples as it has many advantages such as high enrichment factor, easy operation, high recovery, quick phase separation, low cost and low consumption of organic solvents . In the SPE process, synthesis of adsorbents is the fundamental issue since the type and amount of absorbance largely determine selectivity, sensitivity, and full recovery . Compared to conventional adsorbents, nanoadsorbents have attracted more attention from researchers in the past decades, given their high surface area and rapid absorption kinetics.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of chitosan‐siloxane magnetic nanoparticles for the extraction of pesticides from water and determination by HPLC

Badawy

Marei

El-Nouby

2018

Separation Science Plus

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Novel chitosan‐siloxane functionalized magnetic nanoparticles including chitosan polydimethyl siloxane, chitosan octadecyl siloxane, and chitosan phenyl siloxane were prepared and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and Zeta potential measurements. The particles were prepared from Fe3O4 functionalized by siloxane derivatives followed by coating with chitosan through a crosslinking mechanism. Infrared spectroscopy was used to confirm the reaction and conjugation between the three layers of the crosslinking chitosan, siloxane and magnetic nanoparticles. The nanoparticles were applied as effective sorbents for extraction of seven pesticides (abamectin, diazinon, fenamiphos, imidacloprid, lambda‐cyhalothrin, methomyl and thiophanate‐methyl) from water. The particles were used in a magnetic dispersive solid‐phase extraction technique and solid‐phase extraction cartridge. The pesticides were then quantified by using high‐performance liquid chromatography with limit of detection of 0.002–0.046 μg/mL, limit of quantification of 0.006–0.154 μg/mL and excellent linearity in the range of 0.0125–0.15 μg/mL with correlation coefficients (R2) higher than 0.999. The magnetic nanoparticles showed a high recovery efficiency compared to standard octadecylsilane (Sigma–Aldrich) for some pesticides. The results indicated that these methods achieved the rapid and simple extraction of small quantities of adsorbents and solvent with a high recovery rate.

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Application of solvent-assisted dispersive solid phase extraction combined with flame atomic absorption spectroscopy for the determination of trace amounts of Cadmium

Cited by 3 publications

References 26 publications

Development of a Solid-Phase Extraction (SPE) Cartridge Based on Chitosan-Metal Oxide Nanoparticles (Ch-MO NPs) for Extraction of Pesticides from Water and Determination by HPLC

Development of a Solid-Phase Extraction (SPE) Cartridge Based on Chitosan-Metal Oxide Nanoparticles (Ch-MO NPs) for Extraction of Pesticides from Water and Determination by HPLC

A Comparative Evaluation of the Antiproliferative Activity against HepG2 Liver Carcinoma Cells of Plant-Derived Silver Nanoparticles from Basil Extracts with Contrasting Anthocyanin Contents

Preparation and characterization of chitosan‐siloxane magnetic nanoparticles for the extraction of pesticides from water and determination by HPLC

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