In situ ionic liquid dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry for the determination of organophosphorus pesticides

Cacho, J.I.; Campillo, Natalia; Viñas, Pilar; Hernández‐Córdoba, Manuel

doi:10.1016/j.chroma.2017.12.059

Cited by 113 publications

(22 citation statements)

References 31 publications

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“…Wine samples HPLC [285] Organophosphorus pesticides Water GC-MS [286] Polycyclic aromatic hydrocarbons Water HPLC [287] Zinc Water and milk FAAS [288] Bisphenol A Human fluids HPLC-MS [289] Emerging contaminants Water HPLC-UV/Vis [290] Fluoroquinolones and NSAIDs Water HPLC-DAAD [291] Aromatic amines Water HPLC [292] Organophosphate esters water GC-MS [293] Emerging pollutants Water HPLC-UV [294] Pollutants Water HPLC-UV [295] Triazine herbicides Water HPLC-UV [296] Neonicotinoids Honey HPLC-DAAD [297] Organophosphorus pesticides and aromatic compounds Tap, rain and river water HPLC-UV [16] Cadmium Water ETAAS [298] HPLC: high-performance liquid chromatography; FAAS: flame atomic absorption spectrometry; GC-MS: gas chromatography mass spectrometry; NSAIDs: nonsteroidal anti-inflammatory drugs; ETAAS: electrothermal atomic absorption spectrometry.…”

Section: Sulfonylurea Herbicidesmentioning

confidence: 99%

Green Approaches to Sample Preparation Based on Extraction Techniques

Aly

Górecki

2020

Molecules

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Preparing a sample for analysis is a crucial step of many analytical procedures. The goal of sample preparation is to provide a representative, homogenous sample that is free of interferences and compatible with the intended analytical method. Green approaches to sample preparation require that the consumption of hazardous organic solvents and energy be minimized or even eliminated in the analytical process. While no sample preparation is clearly the most environmentally friendly approach, complete elimination of this step is not always practical. In such cases, the extraction techniques which use low amounts of solvents or no solvents are considered ideal alternatives. This paper presents an overview of green extraction procedures and sample preparation methodologies, briefly introduces their theoretical principles, and describes the recent developments in food, pharmaceutical, environmental and bioanalytical chemistry applications.

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Section: Sulfonylurea Herbicidesmentioning

confidence: 99%

Green Approaches to Sample Preparation Based on Extraction Techniques

Aly

Górecki

2020

Molecules

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“…Nine OPPs were evaluated in environmental waters from different origins using in situ ionic liquid dispersive liquid microextraction by Cacho et al, (2017).…”

Section: Treatment Strategiesmentioning

confidence: 99%

Pesticides and Herbicides

Choudri

Charabi

Ahmed

2018

Water Environment Research

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“…Particularly, the determination of BPA has been carried out by many authors from different matrices, such as plastics by means of gas chromatography [ 11 , 12 ], vegetable oils using a magnetic ionic liquid [ 6 ], and a variety of foods and drinks by different analytical techniques [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Determination of Very Low Concentration of Bisphenol A in Toys and Baby Pacifiers Using Dispersive Liquid–Liquid Microextraction by In Situ Ionic Liquid Formation and High-Performance Liquid Chromatography

Vicente-Martínez¹,

Caravaca²,

Soto-Meca³

2020

Pharmaceuticals

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Bisphenol A (BPA) is a chemical compound used in the manufacturing of plastics and resins whose presence in the body in low concentrations can cause serious health problems. Due to this, there is a growing interest in the scientific community to develop analytical methods that allow quantifying trace concentrations of BPA in different types of samples. The determination of this compound in toys made of plastics that can be manipulated by children leads to an extra concern, because it is possible for BPA to enter the body by introducing these toys into the mouth. This work presents a novel procedure to the quickly and easily quantification of trace levels of BPA in samples of toys and pacifiers according to the current demanding regulations. The determination of very low levels of BPA was carried out by ionic liquid dispersive liquid–liquid microextraction (IL-DLLME) followed by high-performance liquid chromatography (HPLC). The formation in situ of the ionic liquid (IL) 1-octyl-3-methylimidazolium bis((trifluoromethane)sulfonyl)imide ([C8MIm] [NTf2]), was achieved by mixing 1-octyl-3-methylimidazolium chloride ([C8MIm]Cl) and lithium bis(trifluoromethanesulfonyl)imide ([NTf2]Li) aqueous solutions, reaching an instant dispersion whose cloud of microdrops allows the total extraction of BPA in the IL from aqueous solutions. After centrifugation, BPA concentration in the sedimented phase was determined by HPLC. The optimal experimental conditions for the microextraction and determination of BPA in the IL were studied. The total extraction was achieved at pH 4, heating the sample at 30 °C for 5 min, using 100 µL of IL precursor volume, and spinning after the formation of dispersion at 3000 rpm for 10 min. The enrichment factor (EF) and detection limit (LOD) reached with the procedure were 299 and 0.19 µg L−1, respectively. The relative standard deviation for ten replications at the 0.5 µg L−1 level was 5.2%. Recovery studies showed a mean value for BPA recovery percentage in the samples of 99%. Additionally, a hybrid model was applied to characterize the extraction kinetics. This simple, low cost and fast method simplifies traditional microextraction techniques, representing an outstanding alternative.

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In situ ionic liquid dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry for the determination of organophosphorus pesticides

Cited by 113 publications

References 31 publications

Green Approaches to Sample Preparation Based on Extraction Techniques

Green Approaches to Sample Preparation Based on Extraction Techniques

Pesticides and Herbicides

Determination of Very Low Concentration of Bisphenol A in Toys and Baby Pacifiers Using Dispersive Liquid–Liquid Microextraction by In Situ Ionic Liquid Formation and High-Performance Liquid Chromatography

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