Synergistic enhancement effect of room temperature ionic liquids for cloud point extraction combined with UV–vis spectrophotometric determination nickel in environmental samples

Zeng, Chujie; Xu, Xili; Zhou, Neng; Lin, Yao

doi:10.1016/j.saa.2012.03.064

Cited by 24 publications

(8 citation statements)

References 23 publications

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“…Ni(II) was categrized as a carcinogen compund to humans and awide variety of chronic problems related to respiratory tract, lung cancer and skin dermatities were caused by high exposure to Ni(II) [1]. Therefore, the estimation of trace Ni(II) in different types of various samples is a very important objective for chemists using effective methods [2,3]. Trace quantities of Ni(II) in real samples are less than the of detection limit of some instruments like FAAS or GF-AAS and the co-existing ions interference are two limitations in estimations [4,5].…”

Section: Introductionmentioning

confidence: 99%

Surface active ionic liquid‑assisted cloud point extraction method for preconcentration of nickel in environmental samples before its FAAS determination

Gouda

El-Sheikh

Hafez

et al. 2020

Bulletin of Faculty of Science, Zagazig University

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Green, rapid and modified surface-active ionic liquid assisted cloud point extraction method (SAIL-CPE) was developed to preconcentrate trace levels of nickel Ni(II) ions in environmental samples perior to its detection by FAAS. The proposed method based on utilizing a mixture of a nonionic surfactant (Triton X-114) and a surface-active ionic liquid, 1-hexadecyl-3-methylimidazolium chloride (C16MeImCl), as an extracting phase for Ni(II) ions after the complexation with sunset yellow FCF at pH 6.5. The impact of different analytical parameters on improving the extraction efficiency was invistigated. In the range of 2.0-600 µg L −1 , the calibration graph was linear with correlation coefficient of 0.9998. Limit of detection and preconcentration factor were 0.6 and 100. The reliability and precision of the proposed SAIL-CPE system as the relative standard deviation (RSD %) in the presence and absence of SAIL were examined by applying ten replicate determinations of 300 µg L-1 of Ni(II), and RSD % of the recoveries were found to be 1.40 and 2.9%, respectively. The validation of the proposed procedure was verified by test of certified reference materials (TMDA-51.3 fortified water, TMDA-53.3 fortified water and SRM spinach leaves 1570A) applying the standard addition method. Finally, the proposed SAIL-CPE method was developed and applied to preconcentrate and determine of trace levels of Ni(II) ions in real water, food and tobacco samples with satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Surface active ionic liquid‑assisted cloud point extraction method for preconcentration of nickel in environmental samples before its FAAS determination

Gouda

El-Sheikh

Hafez

et al. 2020

Bulletin of Faculty of Science, Zagazig University

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“…RTILs have many fascinating properties such as negligible vapor pressure, wide liquid ranges, good stability, tunable viscosity, reusability, nonflammability, adjustable miscibility in water and organic solvents, good solubility and extractability for various organic compounds, suitable for energy dissipation, and so on (Du et al 2007). 1-Alkyl-3-methylimidazolium hexafluorophosphates ([C n MIM][PF 6 ], n = 4, 6, 8) have been investigated for microextraction method (Pena-Pereira et al 2009) for various target analytes including herbicides (Ren et al 2011;Gao et al 2010), carbamate pesticides (Vichapong et al 2011), triclosan (Cabaleiro et al 2011), and metal ion [chromium (Ying et al 2011), copper (Wen et al 2011), arsenic (Escudero et al 2013), mercury (Pena-Pereira et al 2009), and nickel (Zeng et al 2012)]. In order to accelerate the mass transfer of the target analytes from aqueous sample solutions into the fine droplet of extraction, vortex agitation has been used.…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid-Based Vortex-Assisted Liquid–Liquid Microextraction for Simultaneous Determination of Neonicotinoid Insecticides in Fruit Juice Samples

2015

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A simple, rapid, and effective method was developed for preconcentration of neonicotinoid insecticides including clothianidin, imidacloprid, acetamiprid, and thiacloprid in fruit juice samples. Room-temperature ionic liquids [C 4 MIM][PF 6 ] can be used as green extractant phases in vortex-assisted liquid-liquid microextraction (VALLME), being compatible with high-performance liquid chromatographic systems. The effect of extraction parameters, including the addition of salt, volume of (C 4 MIM)(PF 6 ), vortex time, and centrifugation time is identified as the key parameters of the method. Under the selected conditions, the high enrichment factors of 100 could be achieved with the limit of detection in the range of 0.25-0.30 ng mL −1 and with the relative standard deviations of lower than 2.68 and 5.38 % for retention time and peak area, respectively. The proposed method was applied to the analysis of fruit juice samples, and the recoveries of the analytes ranged from 95 to 108 % and relative standard deviations were lower than 7 %. The developed method proposes advantages in reduction of the exposure danger to toxic organic solvents used in the conventional liquid-liquid extraction, simplicity of the extraction processes, rapidity, and sensitivity improvement.

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“…[28] Synergistic enhancement effect of RTILs for cloud point extraction combined with UV-Vis spectrophotometry for the determination of nickel in environmental samples was also reported. [29] The aim of the present work was to establish a novel Hg analysis method. Enhancement effect of RTILs for HF-LPME combined with UV-Vis spectrophotometric was used for the determination of Hg.…”

Section: Introductionmentioning

confidence: 99%

UV–Vis Spectrophotometric Determination of Mercury Based on Room Temperature Ionic Liquids Enhanced Hollow-Fiber Liquid-Phase Microextraction

Zeng

Xie

et al. 2015

Spectroscopy Letters

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A novel method based on the enhancement effect of room temperature ionic liquids for hollow-fiber liquid-phase microextraction trace amounts of mercury combined with UV-Vis spectrophotometry for the determination of Hg was developed. The addition of room temperature ionic liquids led to 6.0 times improvement in the determination of mercury. Under optimized conditions, an enrichment factor of 120 could be obtained, and the detection limit for Hg was 0.2 ng mL À1 . The relative standard deviations for five replicate determinations of 20 ng mL À1 Hg(II) was 5.4%. The proposed method was successfully applied to certified reference materials and environmental water samples with satisfactory results for the determination of Hg.

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Synergistic enhancement effect of room temperature ionic liquids for cloud point extraction combined with UV–vis spectrophotometric determination nickel in environmental samples

Cited by 24 publications

References 23 publications

Surface active ionic liquid‑assisted cloud point extraction method for preconcentration of nickel in environmental samples before its FAAS determination

Surface active ionic liquid‑assisted cloud point extraction method for preconcentration of nickel in environmental samples before its FAAS determination

Ionic Liquid-Based Vortex-Assisted Liquid–Liquid Microextraction for Simultaneous Determination of Neonicotinoid Insecticides in Fruit Juice Samples

UV–Vis Spectrophotometric Determination of Mercury Based on Room Temperature Ionic Liquids Enhanced Hollow-Fiber Liquid-Phase Microextraction

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