Vortex-assisted magnetic β-cyclodextrin/attapulgite-linked ionic liquid dispersive liquid–liquid microextraction coupled with high-performance liquid chromatography for the fast determination of four fungicides in water samples

Yang, Miyi; Xi, Xuefei; Wu, Xiaoling; Lu, Riyu; Zhou, Wenfeng; Zhang, Sanbing; Gao, Haixiang

doi:10.1016/j.chroma.2015.01.016

Cited by 53 publications

(13 citation statements)

References 61 publications

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“…C). This result is consistent with prior studies and can be explained by the fact that salt addition provides a physical barrier formed at the organic–aqueous interface to prevent the mass transfer of analytes into the extraction solvent . Therefore, the addition of NaCl is not necessary in this method.…”

Section: Resultssupporting

confidence: 92%

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Zhang

Yang

2016

J of Separation Science

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Chloroanisoles, particularly 2,4,6-trichloroanisole, are commonly identified as major taste and odor compounds in water. In the present study, a simple and efficient method was established for the simultaneous determination of chloroanisoles and the precursor 2,4,6-trichlorophenol in water by using low-density-solvent-based simultaneous dispersive liquid-liquid microextraction and derivatization followed by gas chromatography with electron capture detection. 2,4-Dichloroanisole, 2,6-dichloroanisole, 2,4,6-trichloroanisole, 2,3,4-trichloroanisole, and 2,3,6-trichloroanisole were the chloroanisoles evaluated. Several important parameters of the extraction-derivatization procedures, including the types and volumes of extraction solvent and disperser solvent, concentrations of derivatization agent and base, salt addition, extraction-derivatization time, and temperature were optimized. Under the optimized conditions (80 μL of isooctane as extraction solvent, 500 μL of methanol as disperser solvent, 60 μL of acetic anhydride as derivatization agent, 0.75% of Na2 CO3 addition w/v, extraction-derivatization temperature of 25°C, without salt addition), a good linearity of the calibration curve was observed by the square of correlation coefficients (R(2) ) ranging from 0.9936 to 0.9992. Repeatability and reproducibility of the method were < 4.5% and <7.3%, respectively. Recovery rates ranged from 85.2 to 101.4%, and limits of detection ranged from 3.0 to 8.7 ng/L. The proposed method was applied successfully for the determination of chloroanisoles and 2,4,6-trichlorophenol in water samples.

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Section: Resultssupporting

confidence: 92%

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Zhang

Yang

2016

J of Separation Science

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“…The unique properties of ILs have given rise to a great number of applications in analytical chemistry. The main applications are associated with extraction and separation techniques, such as are dispersive liquid liquid microextraction (DLLME), solid phase microextraction, gas chromatography, liquid chromatography and capillary electrophoresis [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Tokalıoğlu

Yavuz

Şahan

et al. 2016

Talanta

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“…To work as an alternative solvent, an RTIL must meet certain requirements, such as being insoluble in water, having a low volatility and high extraction capability. 22 Based on these consideration, 1-butyl-3-methylimidazolium hexafluorophosphate [C 4 MIM][PF 6 ] RTIL was used in this study owing to its low viscosity and …”

Section: Optimization Of Conditions For Ilsfod-llmementioning

confidence: 99%

“…Beyond this point, the extraction efficiency decreased because higher amounts caused an increase of the solubility of the RTIL in aqueous phase at high ionic strength, therefore reducing the volume of the sediment (RTIL) phase. 22 Consequently, Na 2 SO 4 5% (w/v) was used for further studies.…”

Section: Optimization Of Conditions For Ilsfod-llmementioning

confidence: 99%

Ionic Liquid-Assisted Liquid–Liquid Microextraction based on the Solidification of Floating Organic Droplet in Sample Preparation for Simultaneous Determination of Herbicide Residues in Fruits

Vichapong

Santaladchaiyakit²,

Burakham³

et al. 2017

ACSi

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An ionic liquid-assisted liquid-liquid microextraction based on the solidification of floating organic droplet (ILSFOD-LLME) was investigated for analysis of four herbicide residues (i.e. simazine, atrazine, propazine, and linuron) by high performance liquid chromatography. For ILSFOD-LLME, the optimal extraction conditions were 5% w/v Na 2 SO 4 , 30 μL [C 4 MIM][PF 6 ]RTIL, 100 μL of 1-octanol, ultrasonication time 30 s and centrifugation at 5000 rpm for 5 min. Under the optimal conditions, linearity was obtained within the range of 0.1-1000 μg kg -1 , with the correlation coefficients greater than 0.999. The high enrichment factors of the target analytes were in the range of 64.5-139.9 and low limit of detection could be obtained. A modified QuEChERS was applied for fruit sample preparation before analysis. Matrix effects were also investigated using matrix matched standards for construction of the calibration graph. The proposed method has been successfully applied for extraction and preconcentration of herbicide residues in fruit samples, and good recoveries in the range of 87.32% to 99.93% were obtained.

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Vortex-assisted magnetic β-cyclodextrin/attapulgite-linked ionic liquid dispersive liquid–liquid microextraction coupled with high-performance liquid chromatography for the fast determination of four fungicides in water samples

Cited by 53 publications

References 61 publications

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Ionic Liquid-Assisted Liquid–Liquid Microextraction based on the Solidification of Floating Organic Droplet in Sample Preparation for Simultaneous Determination of Herbicide Residues in Fruits

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