Effervescent powder-assisted floating organic solvent-based dispersive liquid-liquid microextraction for determination of organochlorine pesticides in water by GC–MS

Ago, Kero Assefa; Kitte, Shimeles Addisu; Chirfa, Gadisa; Gure, Abera

doi:10.1016/j.heliyon.2023.e12954

Cited by 11 publications

(7 citation statements)

References 37 publications

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“…Working standard solutions were daily prepared by diluting the mixed standard solution in n -hexane. 3…”

Section: Methodsmentioning

confidence: 99%

“…This is due to its appropriateness, sensitivity, and capability to separate compounds based on their volatility and amplified sensitivity to non-polar substances. 3,4…”

Section: Introductionmentioning

confidence: 99%

“…This is due to its appropriateness, sensitivity, and capability to separate compounds based on their volatility and amplied sensitivity to non-polar substances. 3,4 Nevertheless, due to the complexity of food and environmental matrices and the trace concentration of OCPs, sample preparation and enrichment methods are required prior to their determination by gas chromatography-mass spectrometry (GC-MS). For the study of OCPs from such complex matrices, wellknown sample preparation techniques have long been developed including liquid-liquid extraction (LLE) and solid-phase extraction (SPE).…”

Section: Introductionmentioning

confidence: 99%

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Ternary solvent based homogeneous liquid–liquid microextraction for the preconcentration of organochlorine pesticides from water and apple juice samples

Ago,

Kitte,

Chirfa

et al. 2024

Anal. Methods

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“…Working standard solutions were daily prepared by diluting the mixed standard solution in n -hexane. 3…”

Section: Methodsmentioning

confidence: 99%

“…This is due to its appropriateness, sensitivity, and capability to separate compounds based on their volatility and amplified sensitivity to non-polar substances. 3,4…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ternary solvent based homogeneous liquid–liquid microextraction for the preconcentration of organochlorine pesticides from water and apple juice samples

Ago,

Kitte,

Chirfa

et al. 2024

Anal. Methods

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“…There was no significant difference between the pesticide α-Endosulfan's lowest and highest spike levels. The enrichment factors and recoveries relative to (Ago et al, 2023) ranged from 24 to 293% and 76-116%, respectively. Since the quantitative analysis of each pesticide depended on the Signal to Noise (S/N)  6 ratios, only one amount of ion was employed in this experiment.…”

Section: Verification Of the Extraction Techniquementioning

confidence: 99%

Determination of Organochlorines Pesticide Residues in Water Samples Using Liquid-Liquid Extraction Method

ŞAMİL,

KUŞVURAN

2023

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, chlorinated cyclic hydrocarbon pesticides were extracted from water using a solvent mixture (hexane: dichloromethane), and their content was determined by GC-MS equipped with electron ionization (EI) and selected ion monitoring (SIM) methods. Additionally, the validation parameters for the method used were established. The recovery ratios of the spike levels varied between 82.7% and 95.4%. Heptachlor had the lowest recovery value, 82.7%, at a concentration of 1.480 μg/L, while Aldrin had the highest recovery value, 95.4%, at 11.200 μg/L. A satisfactory linearity was found for each pesticide at the four varied spike levels during the extraction procedure. Trans-Heptachlor > Heptachlor > trans-Chlordane > cis-Chlordane was the order in which the recovery efficiency of pesticides containing chlorine cyclo rings declined. Trans-Chlordane > trans-Heptachlor >Endosulfan > Dieldrin > Heptachlor > Aldrin > cis-Chlordane was followed by a decline in the relevant value of pesticides having two or more cyclic rings for the seven pesticides that made up the entire analysis period in this experiment a sufficient differentiation was made in around 18 minutes.

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“…Recently, another novel effervescence-assisted DLLME (EA-DLLME) was reported in 2014 by Lasarte-aragonés and coworkers [33]. In this method, the extraction solvent is dispersed by CO2 bubbles, in-situ generated from an effervescent reaction between the CO2 source and the proton donor [33][34][35][36][37][38][39][40][41][42]. EA-DLLME procedure can be performed either by first dissolving CO2 source to an aqueous sample, followed by rapid injection of mixture of a proton donor and an extraction solvent [33,34] or by placing a tablet or powder containing CO2 source and proton donor in a reaction tube to disperse the extraction solvent into the aqueous sample [35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Effervescence-assisted dispersive liquid-liquid microextraction for extraction and preconcentration of organochlorine pesticides in water samples

Tesfaye,

Girma Asere,

Jilo Molole

et al. 2023

Bull. Chem. Soc. Eth.

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ABSTRACT. In this paper, effervescence-assisted dispersive liquid-liquid microextraction method has been developed for the extraction and preconcentration of organochlorine pesticides in water samples before their determination by gas chromatography-mass spectrometry. The method involves in-situ generation of CO2 bubbles to induce dispersion of the extraction solvent in the aqueous sample. Different parameters affecting the extraction efficiency of the method including the type and concentration of the effervescent agents as well as the type and volume of extraction solvent were optimized. Under optimum conditions, matrix matched calibration curves were constructed at eight concentrations ranging from 0.6–4.0 ng/mL showed good linearity with coefficient of determinations of ≥ 0.9961. The limits of detections and quantifications ranged from 0.2–0.4 and 0.6–1.0 ng/mL, respectively. The intra- and inter-day precisions studied at two concentration levels had below 5% relative standard deviation values. Similarly, recoveries investigated at two concentration levels ranged from 80.7–117.4%. The findings demonstrated that proposed method is simple, rapid, and efficient to be used as alternative method for analysis of organochlorine pesticides from environmental water and other similar matrices. KEY WORDS: Effervescence agents, CO2 bubbles, Organochlorine pesticides, Water samples, gas chromatography-mass spectroscopy Bull. Chem. Soc. Ethiop. 2023, 37(5), 1109-1122. DOI: https://dx.doi.org/10.4314/bcse.v37i5.4

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Effervescent powder-assisted floating organic solvent-based dispersive liquid-liquid microextraction for determination of organochlorine pesticides in water by GC–MS

Cited by 11 publications

References 37 publications

Ternary solvent based homogeneous liquid–liquid microextraction for the preconcentration of organochlorine pesticides from water and apple juice samples

Ternary solvent based homogeneous liquid–liquid microextraction for the preconcentration of organochlorine pesticides from water and apple juice samples

Determination of Organochlorines Pesticide Residues in Water Samples Using Liquid-Liquid Extraction Method

Effervescence-assisted dispersive liquid-liquid microextraction for extraction and preconcentration of organochlorine pesticides in water samples

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