Multi-residue analysis of pesticides in blood plasma using hollow fiber solvent bar microextraction and gas chromatography with a flame ionization detector

Zuluaga, Martha; Yathe-G, Laura; Rosero-Moreano, Milton; Taborda-Ocampo, Gonzalo

doi:10.1016/j.etap.2020.103556

Cited by 9 publications

(6 citation statements)

References 19 publications

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“…It is also closely related to the distribution constant as a fundamental principle in liquid-liquid extraction. Determination of EF can be defined by equations (1), (2), and (3) (Raharjo et al, 2009;Zuluaga et al, 2021). The vegetable sample matrix was prepared by diluting 10 gr of crushed mustard green 100 mL of deionized water.…”

Section: Validation Methodsmentioning

confidence: 99%

“…HPLC-DAD then analyzed the extracted solution. Stirring can increase the mass transfer rate during the extraction process (Zuluaga et al, 2021). Stirring the sample solution with the HF-LPME method can shorten the time to reach thermodynamic equilibrium, especially for analytes with a larger molecular mass.…”

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

“…Stirring the sample solution with the HF-LPME method can shorten the time to reach thermodynamic equilibrium, especially for analytes with a larger molecular mass. In the HF-LPME method, the organic solvent is covered and protected by a hydrophobic hollow fiber, making it easier to control the higher stirring speed (Zuluaga et al, 2021). , it can be seen that the optimal stirring speed is 600 rpm.…”

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

“…However, a higher stirring speed can result in the release of the extracted diazinon on the surface of the hollow fiber to be released back into the sample solution (Cai et al, 2016). The increasing stirring speed can generate bubbles of air within the pores of the fiber, making it difficult mass transfer from the donor phase to the lumen of the thread (Zuluaga et al, 2021). Higher stirring speed also increases the kinetic force so that it will disturb the position of the hollow fiber immersed vertically in the sample solution.…”

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

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Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples

2022

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An extraction method based on a combination of hollow fiber liquid-phase microextraction with high-performance liquid chromatography diode array detector (HF-LPME HPLC-DAD) has been developed and demonstrated to analyze pesticide residues in vegetables. This study aims to determine the optimum extraction conditions and validation performance of this method. Diazinon pesticide was selected as the target model analyte. HF-LPME is performed by stacking microliter organic solvent droplets through an HPLC syringe coated with polypropylene hollow fiber by directly dipping it into the sample solution and stirring it during the extraction process. Finally, the organic solvent was put into an HPLC syringe at the end of the extraction. Then, it was injected into the HPLC-DAD at the wavelength of 247 nm. Several important extraction parameters have been optimized. The optimization results showed the type of organic solvent of n-hexane, the length of the hollow fiber of 1.5 cm, the volume of the sample solution of 20 mL, and the stirring speed of 600 rpm. The validation performance obtained a limit of detection (LoD) of 0.10 mgL-1, limit of quantification (LoQ) of 0.33 mgL-1, percent recoveries of 99.88%, a coefficient of variation of 3% (n=15), and the enrichment factor of 19,982 times. Under optimal conditions, the developed method was applied to extract diazinon in vegetable matrix samples using the spiking method. Mustard green was selected as a model matrix sample. From the research, the percentage recoveries of diazinon obtained in the mustard green matrix sample are 98.80% - 100.41%.

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Section: Validation Methodsmentioning

confidence: 99%

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

Section: Optimization Of the Stirring Speedmentioning

confidence: 99%

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Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples

2022

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“…Considering the extensive use of pesticides, development of fast and reliable technique for trace residue analysis of these compounds in various media such as biological, food, fruit, and vegetable samples is of great importance [6]. Among the instrumental methods, high-performance liquid chromatography (HPLC) instrument is an appropriate option for analyzing trace amount of pesticides in different samples, such as water, urine, and fruits [7].…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted Emulsified Microextraction Followed by High Performance Liquid Chromatography for Permethrin

Pourhossein¹,

Golaghaei²,

Khaghani³

et al. 2021

J. Sib. Fed. Chem.

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Ultrasound assisted emulsification microextraction (UAEME) as a new sample preparation method was optimized for the determination of permethrin in urine samples. Also, deep eutectic solvent was used as the extracting solvent instead of organic solvents in this method. In order to determine the optimal values, six main parameters were studied in different levels. Totally, 105 runs were performed using the one-variable-at-a-time method followed by high-performance liquid chromatography with a UV detector. Under the optimum conditions, the calibration curve for permethrin was linear in the concentration range of 5 to 500 μgL‑1 for urine samples. The accuracy and reproducibility of the introduced method were determined using the relative recovery (RR%) and relative standard deviation (RSD%) tests on the fortified urine samples. RR% and RSD% were found to be 96.3–101.7 % and 3.2–7.6 %, respectively. The limit of quantification and also the limit of detection were obtained 5 and 1 μg/L, respectively. In the present study, the DES-UA-EME technique was successfully developed for the extraction of permethrin from urine samples and subsequent quantification by high-performance liquid chromatography.In comparison to the other sample preparation methods, the proposed technique has the advantages of shorter extraction time, simplicity, and applicability in laboratories with less equipment

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Simple and rapid method for 336 multiresidual pesticide analysis in saliva, determination of their chemical stabilities, and biomonitoring of farmers

Park

Lee

et al. 2022

Chemosphere

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Multi-residue analysis of pesticides in blood plasma using hollow fiber solvent bar microextraction and gas chromatography with a flame ionization detector

Cited by 9 publications

References 19 publications

Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples

Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples

Ultrasound-assisted Emulsified Microextraction Followed by High Performance Liquid Chromatography for Permethrin

Simple and rapid method for 336 multiresidual pesticide analysis in saliva, determination of their chemical stabilities, and biomonitoring of farmers

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