New di-(2-Ethylhexyl)Phosphoric Acid-Based Supramolecular Solvent (DEHPA-SUPRAS) Microextraction Coupled to High Performance Liquid Chromatography (HPLC) for the Determination of Organophosphorus Pesticides in Tea Drinks

A new supramolecular solvent (SUPRAS) made up of di-(2-ethylhexyl)phosphoric acid (DEHPA) surfactant its introduced and its application was assessed through the microextraction of organophosphorus pesticides (OPPs) including fenitrothion, phosalone, and chlorpyrifos from tea drinks before being dete...

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Published inAnalytical letters Vol. 56; no. 14; pp. 2329 - 2345
Main Authors Pekkaya, Semra, Yıldız, Elif, Çabuk, Hasan
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 22.09.2023
Taylor & Francis Ltd
Subjects
Analytical chemistry
Chlorpyrifos
Chromatography
Di-(2-ethylhexyl)phosphoric acid (DEHPA)
Diethylhexylphosphoric acid
High performance liquid chromatography
Optical microscopes
organophosphorus pesticide (OPP)
Pesticides
Phase diagrams
Solvents
Standard deviation
supramolecular solvent (SUPRAS)
tea
Tetrahydrofuran
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Abstract A new supramolecular solvent (SUPRAS) made up of di-(2-ethylhexyl)phosphoric acid (DEHPA) surfactant its introduced and its application was assessed through the microextraction of organophosphorus pesticides (OPPs) including fenitrothion, phosalone, and chlorpyrifos from tea drinks before being determined by high performance liquid chromatography with ultraviolet detection (HPLC-UV). The method was based upon the extraction of the analytes into the SUPRAS phase spontaneously formed in the ternary mixture of DEHPA, tetrahydrofuran (THF), and the aqueous sample. A phase diagram delimiting the SUPRAS region was constructed and the microstructure of supramolecular aggregates constituting SUPRAS was examined under the optical microscope. After optimizing the main variables in the procedure, the method provided extraction recoveries and preconcentration factors from 77 to 98% and 15 to 19, respectively. The limits of detection (LODs) for the studied pesticides were from 6 to 10 µg L −1 . The intra- and inter-day relative standard deviation (RSD) values were from 4.4 to 8.9 and 9.0 to 9.5%, respectively. The developed method has been successfully applied to the several tea drinks and acceptable recoveries for spiked samples were obtained between 82 and 106% with relative standard deviations of less than 9.3%.
AbstractList A new supramolecular solvent (SUPRAS) made up of di-(2-ethylhexyl)phosphoric acid (DEHPA) surfactant its introduced and its application was assessed through the microextraction of organophosphorus pesticides (OPPs) including fenitrothion, phosalone, and chlorpyrifos from tea drinks before being determined by high performance liquid chromatography with ultraviolet detection (HPLC-UV). The method was based upon the extraction of the analytes into the SUPRAS phase spontaneously formed in the ternary mixture of DEHPA, tetrahydrofuran (THF), and the aqueous sample. A phase diagram delimiting the SUPRAS region was constructed and the microstructure of supramolecular aggregates constituting SUPRAS was examined under the optical microscope. After optimizing the main variables in the procedure, the method provided extraction recoveries and preconcentration factors from 77 to 98% and 15 to 19, respectively. The limits of detection (LODs) for the studied pesticides were from 6 to 10 µg L−1. The intra- and inter-day relative standard deviation (RSD) values were from 4.4 to 8.9 and 9.0 to 9.5%, respectively. The developed method has been successfully applied to the several tea drinks and acceptable recoveries for spiked samples were obtained between 82 and 106% with relative standard deviations of less than 9.3%.
A new supramolecular solvent (SUPRAS) made up of di-(2-ethylhexyl)phosphoric acid (DEHPA) surfactant its introduced and its application was assessed through the microextraction of organophosphorus pesticides (OPPs) including fenitrothion, phosalone, and chlorpyrifos from tea drinks before being determined by high performance liquid chromatography with ultraviolet detection (HPLC-UV). The method was based upon the extraction of the analytes into the SUPRAS phase spontaneously formed in the ternary mixture of DEHPA, tetrahydrofuran (THF), and the aqueous sample. A phase diagram delimiting the SUPRAS region was constructed and the microstructure of supramolecular aggregates constituting SUPRAS was examined under the optical microscope. After optimizing the main variables in the procedure, the method provided extraction recoveries and preconcentration factors from 77 to 98% and 15 to 19, respectively. The limits of detection (LODs) for the studied pesticides were from 6 to 10 µg L −1 . The intra- and inter-day relative standard deviation (RSD) values were from 4.4 to 8.9 and 9.0 to 9.5%, respectively. The developed method has been successfully applied to the several tea drinks and acceptable recoveries for spiked samples were obtained between 82 and 106% with relative standard deviations of less than 9.3%.
Author Pekkaya, Semra
Çabuk, Hasan
Yıldız, Elif
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CitedBy_id crossref_primary_10_1016_j_microc_2024_110682
crossref_primary_10_1016_j_molliq_2024_124986
crossref_primary_10_1080_03067319_2024_2356712
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Snippet A new supramolecular solvent (SUPRAS) made up of di-(2-ethylhexyl)phosphoric acid (DEHPA) surfactant its introduced and its application was assessed through...
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SubjectTerms Analytical chemistry
Chlorpyrifos
Chromatography
Di-(2-ethylhexyl)phosphoric acid (DEHPA)
Diethylhexylphosphoric acid
High performance liquid chromatography
Optical microscopes
organophosphorus pesticide (OPP)
Pesticides
Phase diagrams
Solvents
Standard deviation
supramolecular solvent (SUPRAS)
tea
Tetrahydrofuran
Title New di-(2-Ethylhexyl)Phosphoric Acid-Based Supramolecular Solvent (DEHPA-SUPRAS) Microextraction Coupled to High Performance Liquid Chromatography (HPLC) for the Determination of Organophosphorus Pesticides in Tea Drinks
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