Application of supramolecular solvent-based dispersive liquid–liquid microextraction for trace monitoring of lead in food samples

Abstract

An efficient sample treatment method based on supramolecular solvent-based dispersive liquid–liquid microextraction was applied for trace monitoring of lead by flow injection flame atomic absorption spectrometry.

Materiales supramoleculares: quimiosensores y otras aplicaciones prácticas

“…Es importante reconocer que la contaminación de aguas por metales tóxicos no solo afecta a los humanos por el consumo directo de este líquido, sino también por todo lo que involucra el uso de aguas contaminadas, como el riego de cultivos lo que se traduce en alimentos contaminados, y la intoxicación de peces y otras especies acuáticas. La presencia de manganeso y zinc en muestras de vegetales fue cuantificada mediante la microextracción con un límite de detección de 0.035 µg/L para ambos metales (Altunay y Katin, 2020); de manera similar se cuantificó la presencia de cobalto en muestras de frutas y cereales con límite de detección de 1.89 µg/L (Aydin et al, 2015) y de plomo con límite de detección de 0.4 µg/L en muestras alimenticias (Rastegar et al, 2016).…”

Supramolecular solvents: a review of a modern innovation in liquid-phase microextraction technique

“…Different researchers have been reported other SUPRASs based approaches for the extraction and pre-concentration of metals from environmental samples Table .2 represents the applications of SUPRAs for the extraction of metal ions. Rastegar et al, [170] proposed SUPRASs based SM-DLLME method to extract lead from the actual samples. To remove SUPRASs using 1-decanol and THF as a solvent using a reverse-phase process into the aqueous solutions after micelles ( nano-size) preparation.…”

Development of preconcentration strategies for the simultaneous ultratrace determination of As, Cd and Pb in foods by ICP-OES: knotted-reactor vs. dispersive liquid–liquid microextraction

“…Supramolecular solvents based on the use of THF with either alcohols [28][29][30] or organic acids 31 have been employed in the literature for metal extraction by means of DLLME and atomic absorption spectrometry detection. To date, however, no previous attempt to apply these solvents in ICP-based techniques has been reported.…”

“…In this work, supramolecular solvents were prepared by combining THF with different surfactants, namely: (i) 1-decanol; 28,29 (ii) 1-undecanol; 30 and (iii) decanoic acid. 31 Initially, supramolecular solvents were directly introduced into the ICP-OES instrument using a FIA manifold, but emission signals from As, Cd and Pb were highly irreproducible.…”