Long‐chain ionic liquid based mixed hemimicelles and magnetic dispersed solid‐phase extraction for the extraction of fluorescent whitening agents in paper materials

Wang, Qing; Qiu, Bin; Chen, Xianbo; Wang, Bin; Zhang, Hui; Zhang, Xiaoyuan

doi:10.1002/jssc.201601399

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…Hydrophobic ILs can be collected after the addition of the magnetic material due to the electrostatic interactions between the IL cation and the negatively-charged surface of the MPs [84][85][86][87][88][89]. Furthermore, despite the hydrophilicity of IL-based surfactants, they form mixed hemimicelles (hemimicelles plus admicelles) on the surface of MPs due to electrostatic interactions, thus functionalizing these MPs to improve their extraction efficiency [90,91]. The formation of hemimicelles as a monolayer of IL provided hydrophobic interactions, while the bilayer of admicelles provided more electrostatic interactions between the sorbent and the target analytes.…”

Section: Magnetic Effervescent Tablets and Other Strategies Based On ...mentioning

confidence: 99%

Role of Ionic Liquids in Composites in Analytical Sample Preparation

et al. 2020

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Ionic liquids (ILs) are a group of non-conventional salts with melting points below 100 °C. Apart from their negligible vapor pressure at room temperature, high thermal stability, and impressive solvation properties, ILs are characterized by their tunability. Given such nearly infinite combinations of cations and anions, and the easy modification of their structures, ILs with specific properties can be synthesized. These characteristics have attracted attention regarding their use as extraction phases in analytical sample preparation methods, particularly in liquid-phase extraction methods. Given the liquid nature of most common ILs, their incorporation in analytical sample preparation methods using solid sorbents requires the preparation of solid derivatives, such as polymeric ILs, or the combination of ILs with other materials to prepare solid IL-based composites. In this sense, many solid composites based on ILs have been prepared with improved features, including magnetic particles, carbonaceous materials, polymers, silica materials, and metal-organic frameworks, as additional materials forming the composites. This review aims to give an overview on the preparation and applications of IL-based composites in analytical sample preparation in the period 2017–2020, paying attention to the role of the IL material in those composites to understand the effect of the individual components in the sorbent.

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Section: Magnetic Effervescent Tablets and Other Strategies Based On ...mentioning

confidence: 99%

Role of Ionic Liquids in Composites in Analytical Sample Preparation

et al. 2020

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“…The authors exploited the adsorption of the [C 16 MIM + ][Br − ] IL to magnetic graphene oxide to extract the studied chlorophenols and optimized extraction conditions resulting in E F greater than 400 for aqueous solutions at 20 ppb. Wang and coworkers developed a MSPE method based on the adsorption of the same [C 16 MIM + ][Br − ] IL to a magnetic substrate to facilitate the extraction of fluorescent whitening agents in paper samples .…”

Section: Il‐based Materials In Magnetic Solid‐phase Extractionmentioning

confidence: 99%

Ionic liquids: solvents and sorbents in sample preparation

Clark

Emaus

Varona

et al. 2017

J of Separation Science

141

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The applications of ionic liquids (ILs) and IL-derived sorbents are rapidly expanding. By careful selection of the cation and anion components, the physicochemical properties of ILs can be altered to meet the requirements of specific applications. Reports of IL solvents possessing high selectivity for specific analytes are numerous and continue to motivate the development of new IL-based sample preparation methods that are faster, more selective, and environmentally benign compared to conventional organic solvents. The advantages of ILs have also been exploited in solid/polymer formats in which ordinarily nonspecific sorbents are functionalized with IL moieties in order to impart selectivity for an analyte or analyte class. Furthermore, new ILs that incorporate a paramagnetic component into the IL structure, known as magnetic ionic liquids (MILs), have emerged as useful solvents for bioanalytical applications. In this rapidly changing field, this Review focuses on the applications of ILs and IL-based sorbents in sample preparation with a special emphasis on liquid phase extraction techniques using ILs and MILs, IL-based solid-phase extraction, ILs in mass spectrometry, and biological applications. K E Y W O R D Salternative solvents, ionic liquids, magnetic ionic liquids, microextraction, sample preparation

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“…[ 25 ] There are many kinds of substances in printing paper, including fluorescent whitening agent (FWA) added in the production process. [ 26,27 ] Moreover, a survey in the United Kingdom has reported that high FWA concentrations (430–1160 mg/kg paper) were detected in some napkins and paper materials used for ‘take‐out’ food packages. [ 28,29 ] It is well known that waste paper recycling significantly reduces environmental pollution and decreases waste flow to the environment and associated disposal costs.…”

Section: Introductionmentioning

confidence: 99%

Ratiometric fluorescent probe for tetracycline detection based on waste printing paper

Liu

Wang

et al. 2021

Luminescence

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Tetracycline (TC) is a broad‐spectrum antibiotic used to treat bacterial infections. In this study, a ratiometric fluorescence (FL) probe was developed to detect TC in water samples using waste printing paper extract as a FL indicator. For this ratiometric probe, the emission of printing paper extract at 436 nm gradually decreased and the emission of a mixed solution at 538 nm significantly increased with the sequential addition of TC upon excitation at 390 nm, coupled with a marked FL colour change from bright blue to faint yellow. Therefore, a ratiometric F538/F436 FL probe was created for TC detection by simply mixing the printing paper extraction and TC. Under the optimized conditions, a linear range from 1 to 100 μM and a detection limit of 0.48 μM (S/N = 3) for TC were obtained. Importantly, the FL probe can be easily prepared with rapid response, high sensitivity, and good selectivity. The application of waste printing paper extract for detection of TC in environmental water samples was demonstrated.

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Long‐chain ionic liquid based mixed hemimicelles and magnetic dispersed solid‐phase extraction for the extraction of fluorescent whitening agents in paper materials

Cited by 8 publications

References 29 publications

Role of Ionic Liquids in Composites in Analytical Sample Preparation

Role of Ionic Liquids in Composites in Analytical Sample Preparation

Ionic liquids: solvents and sorbents in sample preparation

Ratiometric fluorescent probe for tetracycline detection based on waste printing paper

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