Enantioselective determination of triazole fungicide simeconazole in vegetables, fruits, and cereals using modified QuEChERS (quick, easy, cheap, effective, rugged and safe) coupled to gas chromatography/tandem mass spectrometry

Li, Jing; Dong, Fengxia; Xu, Jun; Liu, Xingang; Li, Yuanbo; Shan, Weili; Zheng, Yongquan

doi:10.1016/j.aca.2011.06.034

Cited by 65 publications

(29 citation statements)

References 29 publications

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“…Considering the fact that fruit juices are becoming more and more popular, it is necessary to develop sensitive and selective methods for the analysis of triazole fungicide residues usually present in trace amounts. Many chromatographic analytical methods for the trace determination of triazole fungicide residues in water and fruit juice samples included gas chromatography (GC) (Bordagaray et al 2011;Farajzadeh et al 2010Farajzadeh et al , 2011Farajzadeh et al , 2012Farajzadeh and Khoshmaram 2013;Freitas et al 2014;Li et al 2014;Sarafraz-Yazdi et al 2012), GC with mass spectrometry (GC-MS) (Farajzadeh et al 2012;Freitas et al 2014;Sarafraz-Yazdi et al 2012), GC with tandem mass spectrometry (GC-MS/MS) (Li et al 2011, highperformance liquid chromatography (HPLC) (Bordagaray et al 2013(Bordagaray et al , 2014Gao et al 2012;Luo et al 2013;Wang et al 2011;Ye et al 2012), HPLC with tandem mass spectrometry (HPLC-MS/MS) (Juan-Garcia et al 2004;Li et al 2013;Wang et al 2014;Zhang and Xu 2014), and capillary electrophoresis (CE) (Chicharro et al 2003;Rodriguez et al 2001;Wu et al 2001). On the other hand, quick and effective sample preparation coupled with a reliable analytical method is imperative.…”

Section: Introductionmentioning

confidence: 99%

Vortex-Assisted Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Triazole Fungicides in Fruit Juices

Zhang

Zhao

et al. 2015

Food Anal. Methods

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A rapid, efficient, and environmentally friendly method using vortex-assisted ionic liquid dispersive liquidliquid microextraction (VA-IL-DLLME) prior to highperformance liquid chromatography coupled with photodiode array detection (HPLC-PDA) has been developed for the determination of six triazole fungicides (triazolone, triadimenol, epoxiconazole, flusilazole, tebuconazole, and diniconazole) in various fruit juices. 1-Hexyl-3-methylimidazolium hexafluorophosphate ([C 6 MIM][PF 6 ]) and acetonitrile were used as extraction and dispersive solvents, respectively. A single factor experiment was selected to obtain the significant variables from the several related parameters that could affect the extraction efficiencies, such as the volume of IL and acetonitrile, extraction time, centrifugation time, and salt addition. Under the optimum conditions, an excellent linearity with correlation coefficients higher than 0.997 was obtained. Enrichment factors and average recoveries in three concentration levels ranged from 51 to 72, and 71.0 to 104.5 %, respectively, and the relative standard deviations (RSDs) from 1.4 to 11.8 %. The limits of detection (LODs) (S/N=3) for the six triazole fungicides were between 0.4 and 6.7 μg L −1 . The proposed method was successfully applied for the determination of trace amounts of triazole fungicides in various fruit juices including peach, apple, and orange juices.

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Section: Introductionmentioning

confidence: 99%

Vortex-Assisted Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Triazole Fungicides in Fruit Juices

Zhang

Zhao

et al. 2015

Food Anal. Methods

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“…Numerous techniques including gas chromatography (GC) [8], high performance liquid chromatography (HPLC) [9][10][11], capillary electrophoresis (CE) [12][13][14], membrane separation [15] and preferential crystallization [16,17] have been extensively employed for chiral resolution of racemates. However, sometimes these techniques are limited to be applied in the field of analytical chemistry and face some problems in large-scale separation [18].…”

Section: Introductionmentioning

confidence: 99%

“…The equilibrium constant could then be related to the Gibbs free energy (ΔG o ads ) according to the following expression: ΔG o ads = −RT ln K C (7) Fig. 5 where lnKc plotted against 1/T permits the estimation of both ΔH• ads and ΔS• ads values according to the following equation.lnK C = ΔS o ads /R − ΔH o ads /RT(8) …”

mentioning

confidence: 99%

Preparation of l -tryptophan imprinted microspheres based on carboxylic acid functionalized polystyrene

Monier

Abdel-Latif

Nassef

2015

Journal of Colloid and Interface Science

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“…Achiral analysis gives only partial information; thus, traditional risk evaluations are unreliable if enantioselective behaviors occur. Consequently, it is of great significance to optimize enantioseparation and develop enantiomeric analysis methods of chiral pesticides and investigate the different environmental behaviors of the individual enantiomer to supply more accurate data for evaluating the environmental risk and food safety [5,6].…”

Section: Introductionmentioning

confidence: 99%

Enantioselective separation and determination of the dinotefuran enantiomers in rice, tomato and apple by HPLC

Chen

Dong

Liu

et al. 2012

J of Separation Science

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An effective chiral analytical method was developed for the resolution and determination of dinotefuran enantiomers in rice, tomato and apple samples. Dinotefuran enantiomers were baseline-separated and determined on a novel chiral column, ChromegaChiral CCA, with n-hexane-ethanol-methanol (85:5:10, v/v/v) as the mobile phase at a flow rate of 1.0 mL/min with UV detection at 270 nm. The resolution of dinotefuran enantiomers was about 1.8. The first eluted enantiomer was (+)-dinotefuran and the second eluted one was (-)-dinotefuran. The effects of mobile-phase composition and column temperature on the enantioseparation were evaluated. The method was validated for linearity, repeatability, accuracy, LOD and LOQ. LOD was 0.15 mg/kg in rice and tomato, 0.05 mg/kg in apple, with an LOQ of 0.5 mg/kg in rice and tomato, 0.2 mg/kg in apple. The average recoveries of the pesticide from all matrices ranged from 75.8 to 92.9% for all fortification levels The precision values associated with the analytical method, expressed as RSD values, were <16.5% for the pesticide in all matrices. The methodology was successfully applied for the enantioselective analysis of dinotefuran enantiomers in real samples, indicating its efficiency in investigating the environmental stereochemistry of dinotefuran in food matrix.

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Enantioselective determination of triazole fungicide simeconazole in vegetables, fruits, and cereals using modified QuEChERS (quick, easy, cheap, effective, rugged and safe) coupled to gas chromatography/tandem mass spectrometry

Cited by 65 publications

References 29 publications

Vortex-Assisted Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Triazole Fungicides in Fruit Juices

Vortex-Assisted Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Triazole Fungicides in Fruit Juices

Preparation of l -tryptophan imprinted microspheres based on carboxylic acid functionalized polystyrene

Enantioselective separation and determination of the dinotefuran enantiomers in rice, tomato and apple by HPLC

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