Application of chemometric modeling for ionic liquid-based ultrasonic-assisted dispersive liquid-liquid microextraction: Analysis of fosetyl-aluminum in fruit and vegetable samples

Haq, Hameed Ul; Elik, Adil; Durukan, Hasan; Sarac, Handan; Demirbas, Ahmet; Boczkaj, Grzegorz; Gürsoy, Nevcihan; Altunay, Nail

doi:10.1016/j.jfca.2023.105725

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…In this technique, a very small amount of a mixture of hydrophobic extraction and dispersing solvents is injected into the sample solution to extract the target component in a microvolume phase. Furthermore, some microextraction methods, such as homogeneous liquid-liquid extraction (HLLE) [12], cloud point (CP) extraction [13][14][15], ionic liquid [16], deep eutectic solvent [9,10,17,18], and our proposed organic ion-associate liquid phase (IALP) extraction, can enable in situ solvent formation. HLLE employs organohalogen compounds such as perfluorooctanoic acid in which the analyte is extracted from a homogeneous solution into a very small sedimented phase by pH modification, heating, salt addition (salting out), and constituent mixing/replacement [12].…”

Section: Introductionmentioning

confidence: 99%

In Situ Formation of a Relatively Transparent Ion-Associate Liquid Phase from an Aqueous Phase and Its Application to Microextraction/High-Performance Liquid Chromatography–Fluorescence Detection of Bisphenol A in Water

Hata,

Takahashi,

Osada

et al. 2023

Molecules

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The design of a simple approach enabling the detection of bisphenol A (BPA) in water samples without the need for large amounts of solvents is of utmost importance. This paper reports a simple method for the separation, concentration, and quantification of BPA in water samples using high-performance liquid chromatography with fluorescence detection (HPLC-FLD) after its microextraction into an in situ formed organic ion-associate (IA) liquid phase (LP). Novel IA phase components without conjugated double bonds, such as benzene rings, were investigated. Ethylhexyloxypropylamine hydrochloride and sodium dodecyl sulfate solutions were added to the water samples to form IAs. The aqueous phase and ion-associate liquid phase (IALP) were separated by centrifugation. The aqueous phase was removed, and the liquid phase was recovered and measured using HPLC-FLD or HPLC-electrochemical detection (ECD). The concentrated phase (IALP) had a relatively low viscosity and could be injected directly into the chromatograph without dissolving it in organic solvents. The detection limits for BPA by HPLC-FLD and HPLC-ECD were 0.009 and 0.3 µg L−1, respectively.

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