DLLME-SFO-GC-MS procedure for the determination of 10 organochlorine pesticides in water and remediation using magnetite nanoparticles

Carvalho, Rhiane Ramos Rocha; Rodríguez, Mariandry; Franco, Elton Santos; Beltrame, Felipe; Pereira, Alex Leite; Santos, Virgínia Souza; Araujo, Wildo; Rocha, Bruno Alves; Rodrigues, Jairo Lisboa

doi:10.1007/s11356-020-10285-2

Cited by 8 publications

(4 citation statements)

References 48 publications

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“…These procedures call for moderate to large quantities of potentially dangerous organic solvents, which is time consuming. Therefore, more sophisticated methods using little or no solvent, such as solid-phase extraction, solid-phase microextraction, and dispersive liquid-liquid microextraction (DLLME), have been proposed to decrease the amount of organic chemical residues and to raise the concentration factors [ 45 , 46 ], and also produce data with a lower detection limit [ 47 ]. Ultrasonication for maize [ 48 ], pressurized solvent extraction for egg and Soxhlet extraction with column cleanup have been reported for fruits and vegetables, cheese, yoghurt, fish, meat, cereal, pulses, maize and air samples [ [49] , [50] , [51] ].…”

Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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“…Carvalho and colleagues were able to achieve an LOD of 0.003 µg/L for aqueous samples by employing the GC analysis with the DLLE method. This DLLE variant is more cost-effective and environmentally friendly as it reduces solvent volume compared to LLE [95]. The technique involves freezing and collecting the solvent post-extraction, followed by melting it before analysis.…”

Section: Heptachlor and Heptachlor Epoxide Analysis: Gas Chromatograp...mentioning

confidence: 99%

Investigative Approaches for Pollutants in Water: Aligning with Water Framework Directive Maximum Allowable Concentrations

Koljančić,

Špánik

2023

Water

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In the wake of rapid advancements in the pharmaceutical, food, and agricultural industries, the environment faces an increasing influx of diverse compounds, both intentionally and unintentionally released. These compounds fall into two categories: persistent and emerging pollutants. Persistent pollutants, characterized by their resistance to degradation and potential to accumulate in the environment, pose serious ecological threats. The Water Framework Directive (WFD) plays a pivotal role in monitoring and regulating these substances. This review discusses various contemporary analytical approaches to determine problematic substances, including benzo(a)pyrene, cypermethrin, dichlorvos, heptachlor, and heptachlor epoxide, aligning with the priorities outlined in the 2013 WFD classification. This review focuses on diverse water sampling methods, sample preparation techniques, and analytical methods, encompassing chromatographic, spectroscopic, and electrochemical approaches, with the primary goal of achieving the requirement laid on analytical methods used for the determination of maximum allowable concentrations defined in the WFD. Chromatographic methods, utilizing diverse mass spectrometers, have achieved detection limits as low as 10−6 μg/L, while modern electroanalytical techniques reach levels as low as 10−13 μg/L, reflecting an ongoing collective effort to enhance monitoring and safeguard the health of aquatic ecosystems. From sampling methods, large-volume sampling and passive sampling devices have been shown to be a cost-effective and modern solution, addressing limitations in traditional sampling methods, even if both of them face important pros and cons in terms of quantitative analysis.

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“…For the purpose of quantifying and separating various pesticide residues, in complex matrices, numerous chromatographic techniques have commonly been employed. Most pesticides are volatile and thermally stable, making them suitable for GC [8][9][10][11][12][13]. On the other hand, HPLC coupled with a diode array detector (DAD) is also frequently used to determine polar and thermally unstable pesticide compounds [7,[14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, usage of chlorinated solvents has been outlawed globally and gradually been replaced with more environmentally friendly solvents that are lighter in density than water to address these shortcomings [34]. Moreover, in DLLME based surface floating organic droplet (DLLME−SFOD) technique collection of extraction solvent seems to be interesting and easy task for the extraction of multiresidue compounds [8]. After its development, numerous research works have been reported for analysis of pesticides in foods including fruit juices [17,29,[35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

Bekele

Megersa

2023

Separation Science Plus

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This study was designed to enable the development of a simple, fast, and environmentally friendly analytical technique utilizing dispersive liquid‐liquid microextraction based on surface floating organic droplets for selective and quantitative enrichment of trace level pesticide contaminants from different fruit juice samples for subsequent detection by high performance liquid chromatography, combined with a diode array detector. The selective extraction was necessitated in order to isolate the seven multiclass pesticide residues frequently occurring in fruit juice samples. The effects of experimental parameters such as pH of sample solution, type and volume of extraction and dispersive solvents, ionic strength and extraction time were optimized. The optimized method was validated using spiked blank sample and satisfactory results for accuracy, with recoveries ranging from 87.23% to 99.45%, with %relative standard deviation between 1.37 and 8.39, precision in terms of %relative standard deviation ≤ 10.78 and linearity at concentration levels from 3 to 1500 ng/ml, which corresponded with correlation coefficients ≥ 0.998. The limits of detection and the limits of quantification were ranged from 1.3×10−2 to 5.3×10−2 and 4.2×10−2 to 1.8×10−1 μg/L, respectively. At the end, the method was successfully applied to analyze real fruit juice samples and target analytes were not detected in real samples.

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DLLME-SFO-GC-MS procedure for the determination of 10 organochlorine pesticides in water and remediation using magnetite nanoparticles

Cited by 8 publications

References 48 publications

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Investigative Approaches for Pollutants in Water: Aligning with Water Framework Directive Maximum Allowable Concentrations

Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

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