A new device for magnetic stirring-assisted dispersive liquid–liquid microextraction of UV filters in environmental water samples

Zhang, Pingping; Shi, Zhi‐Guo; Yu, Quan; Feng, Yu‐Qi

doi:10.1016/j.talanta.2010.11.076

Cited by 131 publications

(45 citation statements)

References 24 publications

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“…The usual combinations of extractant and disperser used of UVfilters extraction are chloroform/acetone (CHL/Ac) (Benedé et al, 2014;Tarazona et al, 2010;Tovar-Sánchez et al, 2013) and tetrachloroethylene/Ac (Wu et al, 2013 (Ye et al, 2011) are starting to be used, due to their unique physical and chemical properties, such as non-flammability, negligible vapour pressure, good extractability for a wide spectrum of inorganic, organic and organometallic compounds, as well as tuneable viscosity and miscibility with water and organic solvents (Zhang and Lee, 2012a). This technique was tested in five classes of UV-filters (benzophenone, camphor, salicylate, crylene and p-aminobenzoic acid derivatives) and conducted to high recovery rates (70-118%), using different matrices like river, lake, sea and swimming pool waters (Benedé et al, 2014;Wu et al, 2013;TovarSánchez et al, 2013;Zhang et al, 2011;Tarazone et al, 2010).…”

Section: Dllme Is a Liquid-liquid Extraction (Lle) Based On The Relamentioning

confidence: 99%

“…Good chromatographic separations are desirable, even with sophisticated detectors like mass spectrometers. Diode-array (DAD) (Giokas et al, 2005;Zhang et al, 2011) or photodiode array detectors (PDA) (Li et al, 2013) are also used coupled to HPLC. Recently, ultra-performance liquid chromatography (UPLC) has been explored for this type of analysis since it uses less solvent and provides improved speed, resolution, and sensitivity from narrower and sharper chromatographic peaks and also reduction of matrix effects during MS/MS detection (Wong and MacLeod, 2009).…”

Section: Chromatographic Analysismentioning

confidence: 99%

See 1 more Smart Citation

Advances in analytical methods and occurrence of organic UV-filters in the environment — A review

Ramos

Homem

Alves

et al. 2015

Science of The Total Environment

254

100

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UV-filters are a group of compounds designed mainly to protect skin against UVA and UVB radiation, but they are also included in plastics, furniture, etc., to protect products from light damage. Their massive use in sunscreens for skin protection has been increasing due to the awareness of the chronic and acute effects of UV radiation. Some organic UV-filters have raised significant concerns in the past few years for their continuous usage, persistent input and potential threat to ecological environment and human health. UV-filters end up is wastewater and because wastewater treatment plants are not efficient in removing them, lipophilic compounds tend to sorb onto sludge and hydrophilics end up in river water, contaminating the existing biota. To better understand the risk associated with UV-filters in the environment a thorough review regarding their physicochemical properties, toxicity and environmental degradation, analytical methods and their occurrence was conducted.Higher UV-filter concentrations were found in rivers, reaching 0.3 mg/L for the most studied family, the benzophenone derivatives. Concentrations in the ng to µg/L range were also detected for the paminobenzoic acid, cinnamate, crylene and benzoyl methane derivatives in lake and sea water.Although at lower levels (few ng/L), UV-filters were also found in tap and groundwater. Swimming pool water is also a sink for UV-filters and its chlorine by-products, at the µg/L range, highlighting the benzophenone and benzimidazole derivatives. Soils and sediments are not frequently studied, but concentrations in the µg/L range have already been found especially for the benzophenone and crylene derivatives. Aquatic biota is frequently studied and UV-filters are found in the ng/g-dw range with higher values for fish and mussels. It has been concluded that more information regarding UVfilter degradation studies both in water and sediments is necessary and environmental occurrences should be monitored more frequently and deeply. SEHSDT -sequential extraction with high-speed dispersion tool; SLE -solid-liquid extraction; SPEsolid-phase extraction; SPF -sun protection factor; SPLE -selective pressurized liquid extraction;SPMDs -semipermeable membrane devices; SPME -solid phase microextraction; TD -thermal desorption; TCE -tetrachloroethylene; THF -tetrahydrofuran; Tl -toluene; UPLC -ultraperformance liquid chromatography; USE -ultrasound extraction; UV -ultraviolet; WTP -water treatment plant; WWTP -wastewater treatment plant 4

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Section: Dllme Is a Liquid-liquid Extraction (Lle) Based On The Relamentioning

confidence: 99%

Section: Chromatographic Analysismentioning

confidence: 99%

Advances in analytical methods and occurrence of organic UV-filters in the environment — A review

Ramos

Homem

Alves

et al. 2015

Science of The Total Environment

254

100

View full text Add to dashboard Cite

show abstract

“…A new device for magnetic stirring-assisted DLLME was developed by Zhang et al coupled with HPLC for the analysis of UV-filter (4-hydroxybenzophnone (HB), benzo-phenone (BP), 2,4-dihydrozybenzophenone (DB) and 2-hydroxy-4-methoxybenzophenone(HMB)) in water samples [107]. The schematic extraction procedures were depicted in Fig.…”

Section: Other Modality Of Dllmementioning

confidence: 99%

Recent Advances in Dispersive Liquid - Liquid Microextraction for Organic Compounds Analysis in Environmental Water: A Review

Ma¹,

Lü²,

Chen

2012

CAC

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Dispersive liquid-liquid microextraction (DLLME) is a novel microextraction technique with a great potential in sample pretreatment, which has been increasingly used for preconcentration of diverse analytes. This review updates the state of the art and discusses promising prospects of DLLME, especially focuses on its combined use with chromatographic techniques for organic compounds analysis in environmental water samples. General and specific concepts of the fundamental theory of DLLME are described, and examples of recent innovations and applications are provided to demonstrate its potential for the determination of a wide range of organic compounds in various water matrices. Moreover, some limitations related to DLLME are also discussed in detail, and an outlook on the future of the technique, specifically its coupling with other pretreatment approaches, separation and detection techniques, is also given.

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“…Hashemi, Beyranvand, Mansur, and Ghiasvand (2009) introduced a home-made narrow-necked glass tube for the effective collection of extractant, and inserted it into a centrifuge tube for centrifugation after extraction. Zhang, Shi, Yu, and Feng (2011), designed a special flask equipped with two narrow open necks with one having a capillary tip to facilitate the DLLME process. However, all of these glass-based devices are fragile and require special design, therefore their cost is relatively high and their commercial availability is limited (Wang, Cheng, Zhou, Wang, & Cheng, 2013).…”

Section: Introductionmentioning

confidence: 99%

Optimization of a phase separation based magnetic-stirring salt-induced liquid–liquid microextraction method for determination of fluoroquinolones in food

Gao

Wang

et al. 2015

Food Chemistry

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a b s t r a c tHerein, we developed a novel integrated apparatus to perform phase separation based on magneticstirring, salt-induced, liquid-liquid microextraction for determination of five fluoroquinolones in animal-based foods by HPLC analysis. The novel integrated apparatus consisted of three simple HDPE (high density polyethylene) parts that were used to separate the solvent from the aqueous solution prior to retrieving the extractant. The extraction parameters were optimized using the response surface method based on central composite design: 791 lL of acetone solvent, 2.5 g of Na 2 SO 4 , pH 1.7, 3.0 min of stir time, and 5.5 min centrifugation. The limits of detection were 0.07-0.53 lg kg À1 and recoveries were 91.6-105.0% for the five fluoroquinolones from milk, eggs and honey. This method is easily constructed from inexpensive materials, extraction efficiency is high, and the approach is compatible with HPLC analysis. Thus, it has excellent prospects for sample pre-treatment and analysis of fluoroquinolones in animal-based foods.

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A new device for magnetic stirring-assisted dispersive liquid–liquid microextraction of UV filters in environmental water samples

Cited by 131 publications

References 24 publications

Advances in analytical methods and occurrence of organic UV-filters in the environment — A review

Advances in analytical methods and occurrence of organic UV-filters in the environment — A review

Recent Advances in Dispersive Liquid - Liquid Microextraction for Organic Compounds Analysis in Environmental Water: A Review

Optimization of a phase separation based magnetic-stirring salt-induced liquid–liquid microextraction method for determination of fluoroquinolones in food

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