Magnetic ionic liquid-based dispersive liquid–liquid microextraction for the determination of triazine herbicides in vegetable oils by liquid chromatography

Wang, Qianqian; Sun, Ying; Xu, Bo; Li, Xinpei; Jin, Rui; Zhang, Hanqi; Song, Daqian

doi:10.1016/j.chroma.2014.11.009

Cited by 107 publications

(45 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Small differences in the wavenumbers and intensities of the absorbance bands were found in the spectra of the filter paper and DIL-FPs. [40][41][42] And yet, the peak at 1563 cm -1 observed in the spectra of DIL-FPs was attributed to the characteristic frequency of the imidazolium groups, 39 which confirmed the anchoring of ionic liquids on the surface of the filter paper.…”

Section: Characterizationmentioning

confidence: 74%

See 1 more Smart Citation

Investigation of 1-Dodecylimidazolinm Modified Filter Papers as a Thin-Film Microextraction Phase for the Preconcentration of Bisphenol A from Plant Oil Samples

Liu

Wang

et al. 2017

ANAL. SCI.

View full text Add to dashboard Cite

Based on the tunability of ionic liquids (ILs) according to the specific requirement of an application, 1-dodecylimidazolium chloride with amphiphilic structures was chemically fabricated on the surface of filter papers (DIL-FPs) for the first time. After synthesis, DIL-FPs was characterized by scanning electronic microscopy, energy dispersive X-ray spectroscopy and Fourier-transform infrared spectroscopy. DIL-FPs was used as a novel thin-film microextraction (TFME) phase for the preconcentration of amphiphilic bisphenol A from plant oil samples. The related extraction variables were studied in a spiked sunflower seed oil. Under the optimal conditions, the linear range was 5.0 -1000 μg L -1 with a correlation coefficient of 0.9976. The limit of detection (S/N = 3) and the enrichment factor of the proposed method were 2.7 μg L -1 and 118, respectively. The intra-day precision and inter-day precision for six repeated determinations were 2.3 and 4.9%, respectively. These plant oil samples used in this work were free of bisphenol A contaminations. The recovery study carried out in different plant oil samples and mean recoveries ranged from 77.16 to 97.10%. The developed DIL-FPs extraction film phase followed by HPLC-UV provides a potential pretreatment strategy for the analysis of weak organic acid compounds in plant oil samples.

show abstract

Section: Characterizationmentioning

confidence: 74%

“…According to a reference, 39 these oil samples were previously analyzed if there was a peak at the retention position of BPA in the chromatograms. The experimental results showed that BPA was undetectable in these oil samples.…”

Section: Plant Oil Samplesmentioning

confidence: 99%

Investigation of 1-Dodecylimidazolinm Modified Filter Papers as a Thin-Film Microextraction Phase for the Preconcentration of Bisphenol A from Plant Oil Samples

Liu

Wang

et al. 2017

ANAL. SCI.

View full text Add to dashboard Cite

show abstract

“…Some relevant data for comparison of the developed method with some other reported methods for the determination of triazine herbicides are shown in Supporting Information Table S2. The current method showed better or comparable linearity, precision, and LODs.…”

Section: Resultsmentioning

confidence: 99%

Self‐assembled magnetic nanoparticle supported zeolitic imidazolate framework‐8: An efficient adsorbent for the enrichment of triazine herbicides from fruit, vegetables, and water

Zhou

Deng

et al. 2017

J of Separation Science

View full text Add to dashboard Cite

Zeolitic imidazolate frameworks have positive surface charges and high adsorption capabilities. In this work, zeolitic imidazolate frameworks-8 and negatively charged magnetic nanoparticles were self-assembled by electrostatic attraction under sonication. The extraction performance of the synthesized hybrid material was evaluated by using it as a magnetic adsorbent for the enrichment of triazine herbicides in various sample matrices prior to analysis using ultrafast liquid chromatography. The main parameters, that is, extraction time, adsorbent dosage, salt concentration, and desorption conditions, were evaluated. Under the optimum conditions, good linear responses from 2.5 to 200 ng/mL for atrazine (simazine) and 1 to 200 ng/mL for prometryn (ametryn), with correlation coefficients (R ) higher than 0.9992 were obtained. The detection limits of the method (S/N = 3) were 0.18-0.72 ng/mL. The proposed method was successfully used to determine triazine herbicides in six samples, namely, apple, pear, strawberry, pakchoi, lettuce, and water. The amounts of simazine in all the fruit and vegetable samples were 10.8-25.2 ng/mL. The recoveries of all the analytes were 88.0-101.9%, with relative standard deviations of less than 8.8%.

show abstract

“…DLLME offers significant advantages including simplicity, easy handling, cost-effectiveness, rapidity, limited consumption of organic solvents, and high enrichment capabilities. These features have attracted the interest of many research groups, and DLLME has been applied for the extraction of triazines from different matrixes (Radišić et al 2013;Wu et al 2012;Zhang and Xu 2014;Andruch et al 2013;Wang et al 2014). Of course, like other analytical methods, DLLME also has its drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Salt De-Emulsification Dispersive Liquid-Liquid Microextraction and Back-Extraction Combined with Sweeping Micellar Electrokinetic Capillary Chromatography for Detection of Triazine Herbicides in Honey

Yue

et al. 2015

Food Anal. Methods

View full text Add to dashboard Cite

A rapid, simple, and sensitive method has been developed for the analysis of triazine herbicides in honey samples by using salt de-emulsification dispersive liquidliquid microextraction and back-extraction (SD-DLLME-BE) coupled with sweeping in micellar electrokinetic chromatography (MEKC). In the newly developed method, chloroform can be generated by the reaction of chloral hydrate and sodium hydroxide, and the chloroform droplets dispersed into bulk aqueous solution can be swiftly carried to the bottom of the centrifuge tube with the addition of calcium chloride. Then, back-extraction was utilized to extract the analytes into an aqueous solution prior to capillary electrophoresis (CE) analysis. The advantages of the new in situ DLLME lie in dispersive solvent-free and no centrifugation operation compared with the conventional DLLME. Several important parameters influencing the preconcentration and extraction efficiency of SD-DLLME-BE such as sodium dodecyl sulfate (SDS) concentration, pH, chloral hydrate and sodium hydroxide content, extraction time, and calcium chloride content were optimized. Under the optimized conditions, the enrichment factors were achieved in the range from 459 to 636. The proposed method provided a good linearity, low limits of detection (8.56 ng/mL), and good repeatability of the extractions (relative standard deviations (RSDs) below 8.8 %, n=6).Honey samples were analyzed by the proposed method, and obtained results indicated that the proposed method provides acceptable recoveries and precisions.

show abstract

Magnetic ionic liquid-based dispersive liquid–liquid microextraction for the determination of triazine herbicides in vegetable oils by liquid chromatography

Cited by 107 publications

References 38 publications

Investigation of 1-Dodecylimidazolinm Modified Filter Papers as a Thin-Film Microextraction Phase for the Preconcentration of Bisphenol A from Plant Oil Samples

Investigation of 1-Dodecylimidazolinm Modified Filter Papers as a Thin-Film Microextraction Phase for the Preconcentration of Bisphenol A from Plant Oil Samples

Self‐assembled magnetic nanoparticle supported zeolitic imidazolate framework‐8: An efficient adsorbent for the enrichment of triazine herbicides from fruit, vegetables, and water

Salt De-Emulsification Dispersive Liquid-Liquid Microextraction and Back-Extraction Combined with Sweeping Micellar Electrokinetic Capillary Chromatography for Detection of Triazine Herbicides in Honey

Contact Info

Product

Resources

About