Ionic liquid-based microwave-assisted dispersive liquid–liquid microextraction and derivatization of sulfonamides in river water, honey, milk, and animal plasma

Xu, Xu; Su, Rui; Zhao, Xiaoyan; Liu, Zhuang; Zhang, Yupu; Li, Dan; Li, Xueyuan; Zhang, Hanqi; Wang, Ziming

doi:10.1016/j.aca.2011.09.018

Cited by 111 publications

(57 citation statements)

References 41 publications

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“…Table 1) for the same RTILs, which could be due to the higher hydrophobicity of those group of molecules which have higher molar volume as reflected by the V solute parameter (see Electronic Supplementary Material (ESM) Table S1). 4 ]) and water at room temperature. We also used the SPM to study these biphasic systems to both predict partitioning and to chemically interpret the LSER coefficients [29] f Data from reference [30] g Data from reference [32] h Data from reference [33] obtained.…”

Section: Resultsmentioning

confidence: 99%

“…Although the lack of toxicity for the majority of the RTILs has not been completely demonstrated, they are invoked as "green" or "environmentally friendly solvents" [4][5][6]. The density of the RTILs can be higher or lower than that of typical aqueous solutions which conditions the experimental design if an extractant of this type is going to be used in liquid-liquid extractions (LLEs).…”

Section: Introductionmentioning

confidence: 99%

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Partition coefficients of organic compounds between water and imidazolium-, pyridinium-, and phosphonium-based ionic liquids

2014

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The partition coefficients, P IL/w, of several compounds, some of them of biological and pharmacological interest, between water and room-temperature ionic liquids based on the imidazolium, pyridinium, and phosphonium cations, namely 1-octyl-3-methylimidazolium hexafluorophosphate, N-octylpyridinium tetrafluorophosphate, trihexyl(tetradecyl)phosphonium chloride, trihexyl(tetradecyl)phosphonium bromide, trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfonyl)imide, and trihexyl(tetradecyl)phosphonium dicyanamide, were accurately measured. In this way, we extended our database of partition coefficients in room-temperature ionic liquids previously reported. We employed the solvation parameter model with different probe molecules (the training set) to elucidate the chemical interactions involved in the partition process and discussed the most relevant differences among the three types of ionic liquids. The multiparametric equations obtained with the aforementioned model were used to predict the partition coefficients for compounds (the test set) not present in the training set, most being of biological and pharmacological interest. An excellent agreement between calculated and experimental log P IL/w values was obtained. Thus, the obtained equations can be used to predict, a priori, the extraction efficiency for any compound using these ionic liquids as extraction solvents in liquid-liquid extractions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Partition coefficients of organic compounds between water and imidazolium-, pyridinium-, and phosphonium-based ionic liquids

2014

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“…In this way, a simultaneous ILbased MADLLME method was shown to be suitable for the determination of plasticizers in water [96]. The same technique was employed after derivatization to determine trace amounts of SAs in various food and biological matrices [59].…”

Section: Conclusion and Trendsmentioning

confidence: 98%

“…Xu et al [59] developed a new sample-pretreatment method, IL-based microwaveassisted dispersive liquid-liquid microextraction (MADLLME), and derivatization combined with HPLC, to determine trace amounts of six SAs in various food and biological matrices. By adding methanol (disperser), fluorescamine solution (derivatization reagent) and IL (extraction solvent) into the sample, extraction, derivatization, and pre-concentration were performed continuously.…”

Section: Veterinary Drugsmentioning

confidence: 99%

Microwave-assisted extraction of emerging pollutants in environmental and biological samples before chromatographic determination

Sánchez-Prado

Garcı́a-Jares

Dagnac³

et al. 2015

TrAC Trends in Analytical Chemistry

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“…Microwave (3 × 10 8 –3 × 10 11 Hz, 1–1000 mm) is a kind of electromagnetic wave. The applications of microwave in the field of chemical engineering have been rapidly developed, since it can significantly improve product yield and purity, and reduce reaction time and solvent's consumption . In 2006, Rajakovic et al.…”

Section: Introductionmentioning

confidence: 99%

Microwave‐assisted‐demulsification dispersive liquid–liquid microextraction for the determination of triazole fungicides in water by gas chromatography with mass spectrometry

Wang

Zhao

Wang

et al. 2018

J of Separation Science

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A novel microwave‐assisted‐demulsification dispersive liquid–liquid microextraction technique was established for determination of three triazole fungicides in environmental water samples by gas chromatography with mass spectrometry. Importantly, microwave irradiation has been applied in demulsification to achieve the phase separation and enrichment of triazole fungicides in water samples successfully with low‐density toluene as extractant. The experimental variables, including microwave power, microwave time, ultrasonic time, type and volume of extraction solvent, and effect of salting out were investigated. Under the optimized conditions, the method showed good linearity for myclobutanil, tebuconazole, and difenoconazole in the range of 1–100 μg/L. The limits of detection and the limits of quantification were within the range of 0.14–0.27 and 0.47–0.90 μg/L, respectively. The suitable enrichment factors for three triazole pesticides were in the range of 425–636. The recoveries were between 89.3 and 108.7%, and the relative standard deviations were from 5.4 to 8.6%. Finally, environmental water samples were used to verify the applicability of the proposed method for analysis of triazole fungicides targets. It can be concluded that the developed microwave‐assisted‐demulsification dispersive liquid–liquid microextraction gas chromatography with mass spectrometry method was a rapid, efficient, reliable, and environmental friendly way for analysis of triazole fungicides in water.

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Ionic liquid-based microwave-assisted dispersive liquid–liquid microextraction and derivatization of sulfonamides in river water, honey, milk, and animal plasma

Cited by 111 publications

References 41 publications

Partition coefficients of organic compounds between water and imidazolium-, pyridinium-, and phosphonium-based ionic liquids

Partition coefficients of organic compounds between water and imidazolium-, pyridinium-, and phosphonium-based ionic liquids

Microwave-assisted extraction of emerging pollutants in environmental and biological samples before chromatographic determination

Microwave‐assisted‐demulsification dispersive liquid–liquid microextraction for the determination of triazole fungicides in water by gas chromatography with mass spectrometry

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