Magnetic Solid-Phase Extraction and Ionic Liquid Dispersive Liquid–Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Hexachlorophene in Cosmetics

Liu, Ruiqi; Liu, Ye; Cheng, Chao; Yang, Yongjian

doi:10.1007/s10337-017-3283-5

Cited by 18 publications

(12 citation statements)

References 38 publications

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“…The best pH condition strongly depends on the chemical structures and pK a of the analytes. Hence, the pH optimization to obtain non-ionized forms of the analytes, which are preferably extracted by the hydrophobic MIL [P 6,6,6,14 + ] 2 [MnCl 4 2− ], is important. The adjustment of sample pH plays a key role when ionizable compounds are analyzed [17].…”

Section: Optimization Of Sample Phmentioning

confidence: 99%

“…Organic solvents such as chloroform and dichloromethane have typically been used in this technique; however, these solvents exhibit some limitations due to their properties such as toxicity and high volatility. Ionic liquids (ILs) have been used as alternative extraction phases due to their remarkable properties, such as non‐flammability, multiple solvation properties, high ability to extract organic and inorganic compounds, low vapor pressure, and adjustable hydrophobicity .…”

Section: Introductionmentioning

confidence: 99%

“…A subclass of ILs known as magnetic ionic liquids (MILs) has been gaining attention, and they have been applied as extraction phases in sample preparation procedures, including HS‐SDME , DLLME and MSPE . These compounds exhibit similar properties to conventional ILs; however, they respond to a magnetic field due to the incorporation of a paramagnetic component in the cation or anion of the ILs . When applied in DLLME, a small amount of MIL combined with a disperser solvent is rapidly introduced into an aqueous sample solution.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic ionic liquids as an efficient tool for the multiresidue screening of organic contaminants in river water samples

Silva

Mafra

Spudeit

et al. 2019

Separation Science Plus

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In this study, a multiresidue analytical methodology based on magnetic ionic liquid as extraction phase and dispersive liquid‐liquid microextraction, was developed for the determination of organic contaminants in river water samples by high‐performance liquid chromatography with diode array detection (HPLC‐DAD). Experimental conditions were carefully optimized using univariate and multivariate designs. A simplex‐lattice design was adopted for the optimization of disperser solvent, univariate planning was applied to pH optimization and a central composite design was used for the optimization of magnetic ionic liquid mass, extraction time and NaCl concentration added to the samples. The optimal extraction conditions were a mixture of acetonitrile/methanol 50:50 v/v as disperser solvent, pH adjusted to 6.0, 10 mg of magnetic ionic liquid, and extraction time of 180 s. The analytical parameters of merit were determined under the optimized conditions, and very acceptable results were achieved, with limits of detection ranging from 1.5 to 15 μg L−1 and determination coefficients (R2) higher than 0.992 for all 15 analytes. Precision varied from 8.6 to 17.8% and from 0.4 to 19.3% for interday (n = 9) and intraday (n = 3) assays, respectively. Relative recoveries varied from 56 to 123% in two aqueous samples, both collected in Camboriú city, Santa Catarina, Brazil.

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Section: Optimization Of Sample Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic ionic liquids as an efficient tool for the multiresidue screening of organic contaminants in river water samples

Silva

Mafra

Spudeit

et al. 2019

Separation Science Plus

View full text Add to dashboard Cite

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“…Several analytical methods including paper and plate chromatography [8], gas chromatography-electron capture detection (GC-ECD) [9], gas chromatography-mass spectrometry (GC-MS) [10], gas-liquid chromatography (GLC) [11], high-performance liquid chromatography (HPLC) [12][13][14], and ultra-high-performance liquid chromatography-quadrupole time of flight mass spectrometry (UPLC-QTOF-MS) [15], have been used to determine HCP. For GC analysis, HCP usually requires suitable derivatization, although it can get higher sensitivity, the procedure is complicated and time consuming.…”

Section: Introductionmentioning

confidence: 99%

Determination of hexachlorophene in cosmetics by capillary electrophoresis compared with high performance liquid chromatography

Gao

Huitao

et al. 2020

AChrom

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Abstract A simple capillary electrophoresis (CE) method with ultraviolet (UV) detection was developed for the determination of hexachlorophene (HCP) in cosmetics. Separation conditions were obtained in 20 mM Na2B4O7, 10% MeOH (pH 9.20), with 25 kV applied voltage and UV detection at 208 nm. Under the selected conditions, electrophoretic analysis was completed in about 4 min, with limit of detection (LOD) of 0.06 µg·mL−1 for HCP. The method was successfully applied to determine HCP in three kinds of cosmetics with relative standard deviations (RSD) of 0.52–3.02% and recoveries from 90.0 to 96.4% for the spiked samples. The results indicated that the proposed method was reliable. Comparative experiments were also carried out with high-performance liquid chromatography (HPLC)-UV method described in National Standards of People's Republic of China. The validation results of the two methods are comparable, but the proposed CE method is simple, rapid, which makes separation and analyte quantification in shorter time with much less reagent consumption.

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“…ILs with 1-alkyl-3-methylimidazolium cation and anions of bromide (Br − ), hexafluorophosphate (PF 6 − ) and bis(trifluoromethylsulfonyl)imide (Tf 2 N − ) are most commonly used as extraction solvents in many literatures. For example, 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF 6 ]) was used to extract benzodiazepines [ 20 ], 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf 2 N]) was used to extract bisphenol A [ 21 ], 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM][PF 6 ]) was used to extract hexachlorophene [ 22 ], and 1-butyl-3-methylimidazolium bromide ([BMIM] Br) was the extraction solvent of brazilin and protosappanin B [ 23 ]. The ILs showed good extraction efficiency in their extraction systems.…”

Section: Introductionmentioning

confidence: 99%

Detection of Organophosphorus Pesticides in Wheat by Ionic Liquid-Based Dispersive Liquid-Liquid Microextraction Combined with HPLC

Liu

Quan

2018

Journal of Analytical Methods in Chemistry

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Food safety issues closely related to human health have always received widespread attention from the world society. As a basic food source, wheat is the fundamental support of human survival; therefore, the detection of pesticide residues in wheat is very necessary. In this work, the ultrasonic-assisted ionic liquid-dispersive liquid-liquid microextraction (DLLME) method was firstly proposed, and the extraction and analysis of three organophosphorus pesticides were carried out by combining high-performance liquid chromatography (HPLC). The extraction efficiencies of three ionic liquids with bis(trifluoromethylsulfonyl)imide (Tf2N) anion were compared by extracting organophosphorus in wheat samples. It was found that the use of 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([OMIM][Tf2N]) had both high enrichment efficiency and appropriate extraction recovery. Finally, the method was used for the determination of three wheat samples, and the recoveries of them were 74.8–112.5%, 71.8–104.5%, and 83.8–115.5%, respectively. The results show that the method proposed is simple, fast, and efficient, which can be applied to the extraction of organic matters in wheat samples.

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Magnetic Solid-Phase Extraction and Ionic Liquid Dispersive Liquid–Liquid Microextraction Coupled with High-Performance Liquid Chromatography for the Determination of Hexachlorophene in Cosmetics

Cited by 18 publications

References 38 publications

Magnetic ionic liquids as an efficient tool for the multiresidue screening of organic contaminants in river water samples

Magnetic ionic liquids as an efficient tool for the multiresidue screening of organic contaminants in river water samples

Determination of hexachlorophene in cosmetics by capillary electrophoresis compared with high performance liquid chromatography

Detection of Organophosphorus Pesticides in Wheat by Ionic Liquid-Based Dispersive Liquid-Liquid Microextraction Combined with HPLC

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