Analysis of phenolic acids as chloroformate derivatives using solid phase microextraction–gas chromatography

Citová, Ivana; Sladkovský, Radek; Solich, Petr

doi:10.1016/j.aca.2006.04.077

Cited by 33 publications

(15 citation statements)

References 43 publications

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“…Similar to this study, a decrease in micropollutant uptake by polyacrylate SPME fibres have previously been observed at high temperatures. 39 As sorption to polyacrylate is diffusion controlled, the temperature accelerates removal kinetics. 40 However, as the temperature increases to 45 and 55°C the polyacrylate-water partition coefficient decreases 39 , and this may lead to a reduction in estrone removal at high temperatures.…”

Section: Sorptionmentioning

confidence: 99%

Sorption of micropollutant estrone to a water treatment ion exchange resin

et al. 2010

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Micropollutants occur in natural waters from a range of sources. Estrogenic compounds are naturally excreted by humans and hence stem predominantly from wastewater effluents. Due to their small molecular weight and concentration their effective control is a challenge. In this study magnetic ion exchange (MIEX), which was developed to remove natural organic matter (NOM) from surface water, was investigated for such a micropollutant, estrone. The interaction of estrone with the resin occurs as a side effect when NOM is removed. This interaction results in some degree of removal. However, the accumulation of those hazardous materials on the resin, which can be associated with accidental release, as well as the concentration in the regeneration brine of the process, is environmentally more significant. For this reason a thorough investigation of interaction phenomena was undertaken. Estrone and polymeric materials (such as ion exchange resins or membranes) interact through a number of mechanisms including specific and non-specific interactions. Sorption and desorption of estrone were studied as a function of pH, temperature, natural organic matter concentration, sulfate concentration and ionic strength to elucidate possible mechanisms. The results demonstrated that the resin removed around 70% estrone at high pH conditions (>10.4) when estrone was predominantly negatively charged. However, below pH 10.4, when estrone was neutral, approximately 40% of estrone still sorbed due to hydrogen bonding. The optimum temperature for estrone sorption was observed to be in the 15 to 35 degrees C range, while the presence of other anions, including natural organic matter reduced estrone removal due to competition for anion exchange sites. Desorption of estrone was most effective with 2 M NaCl regeneration brine concentration when estrone was negatively charged (98% desorption). However, when estrone was neutral there was no significant difference between 1 M and 2 M NaCl. The results presented in this study indicate that polar non-ionic micropollutants were removed by magnetic ion exchange resin due to sorption to the resin polymer. This has implications for treatment, however, the accumulation of micropollutants on polymeric materials in water treatment as well as the abundance of such micropollutants in the regeneration brine are risks that warrant monitoring.

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Section: Sorptionmentioning

confidence: 99%

Sorption of micropollutant estrone to a water treatment ion exchange resin

et al. 2010

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“…SPME and LPME have been successfully applied for the analysis of a wide range of analytes in different matrices such as water, drug, plasma, and food (Barri & Jönsson, 2008;Chen et al, 2008;Pawliszyn, 1999;Pedersen-Bjergaard & Rasmussen, 2008;Ridgway et al, 2007;Xu et al, 2007). However, application of microextraction techniques (such as SPME and LPME) to the analysis of phenolic compounds in fruits and plants has not been reported before (Naczk & Shahidi, 2004;Schmidtlein & Herrmann, 1975;Chen et al, 2008;Pawliszyn, 1999;Barri & Jönsson, 2008;Ridgway et al, 2007;Xu et al, 2007;PedersenBjergaard & Rasmussen, 2008;Citová, Sladkovský , & Solich, 2006;Stalikas, 2007), except in our previous work (Saraji & Mousavinia, 2006) where we used the single-drop microextraction (SDME) technique followed by GC-MS to analyse some phenolic acids in fruit and fruit juices.…”

Section: Introductionmentioning

confidence: 95%

Use of hollow fibre-based liquid–liquid–liquid microextraction and high-performance liquid chromatography–diode array detection for the determination of phenolic acids in fruit juices

Saraji

Mousavi

2010

Food Chemistry

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“…DI-SPME has also been widely applied to the analysis of different classes of contaminants: In-vial derivatization is used for homocysteine (Hcy), cysteine (Cys), and methionine (Met) [70], phenylurea herbicides (PUHs) [78], polar aromatic amines [122], degradation products of chemical warfare agents [58], methylamine (MA) [168], alkanethiols and dihydrogen sulfide [123], phenolic acids [69], anatoxin-a [71], acidic pesticides [72], phenoxy acid herbicides [68], methyl mercury and Hg(II) [141], and chromium [146,147]. On-fiber post-derivatization is widely used for anatoxin-a [112,113], p-hydroxybenzoic acid (parabens) [56], phenolic compounds [45,53,161,162], β-agonist clenbuterol [40], anti-inflammatory drugs [39], dimethylamine [103], salicylate-and benzophenone-type UV filters [163], phenoxy acid herbicides, and dicamba [54].…”

Section: Watermentioning

confidence: 99%

Application of Solid-Phase Microextraction Combined with Derivatization for Polar Compound Sampling in Environmental Analysis

Yang¹,

Luan²

2016

Solid Phase Microextraction

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Solid-phase microextraction (SPME) is a solvent-free sample preparation technique using a fused-silica fiber coated with an appropriate stationary phase. Derivatization is often necessary to determine substances with poor chromatographic behavior, high reactivity, and/or volatility or thermal instability. SPME derivatization technique can be operated under different combined modes and may be influenced by factors such as sample matrix, SPME, derivatization, and desorption condition. Combined with derivatization, HS-SPME, DI-SPME, membrane-protected SPME, and in-tube SPME have been applied to the analysis of a vast amount of chemicals, i.e., aldehydes and acetone, amines, organic acids, phenolic compounds, pesticide, metal and organic metal species, and pharmaceutical and personal care products (PPCPs) in a wide range of environmental matrices, including air, water, soil, and sediment samples. This chapter reviews the mode and method development of the derivatization technique, the derivatization reagents, and reaction mechanism, as well as its applications in environmental analysis.

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Analysis of phenolic acids as chloroformate derivatives using solid phase microextraction–gas chromatography

Cited by 33 publications

References 43 publications

Sorption of micropollutant estrone to a water treatment ion exchange resin

Sorption of micropollutant estrone to a water treatment ion exchange resin

Use of hollow fibre-based liquid–liquid–liquid microextraction and high-performance liquid chromatography–diode array detection for the determination of phenolic acids in fruit juices

Application of Solid-Phase Microextraction Combined with Derivatization for Polar Compound Sampling in Environmental Analysis

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