In situ derivatization combined to automated microextraction by packed sorbents for the determination of chlorophenols in soil samples by gas chromatography mass spectrometry

Paredes, Rosa María González; Pinto, Carmelo Garcı́a; Pavón, José Luis Pérez; Cordero, Bernardo Moreno

doi:10.1016/j.chroma.2014.07.048

Cited by 31 publications

(3 citation statements)

References 41 publications

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“…As shown in Table 2, the use of MEPS in environmental analysis is very popular for water matrices, a fact that is certainly related with the low complexity and viscosity of the samples, therefore requiring less processing steps. Nevertheless, there are some interesting applications involving the extraction of different environmental contaminants in more complex samples, as textiles, 95 soils, 101 blood, 85,97 or serum. 102 There are also several examples reporting MEPS approaches to detect pesticides and other environmental contaminants in food matrices, such as wheat flour, 103 honey 104 or corn.…”

Section: Analyst Critical Reviewmentioning

confidence: 99%

Current trends on microextraction by packed sorbent – fundamentals, application fields, innovative improvements and future applications

Gonçalves

Porto-Figueira

Figueira

et al. 2019

Analyst

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Section: Analyst Critical Reviewmentioning

confidence: 99%

Current trends on microextraction by packed sorbent – fundamentals, application fields, innovative improvements and future applications

Gonçalves

Porto-Figueira

Figueira

et al. 2019

Analyst

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“…favorable derivatization reagent for some advantages such as aqueous medium, high yield, and low reagent cost [8,[19][20][21].…”

Section: F I G U R E 1 Formation Of Trihaloanisoles and Their Direct mentioning

confidence: 99%

“…Therefore, halophenols need to be derivatized before their chromatographic analysis . To derive phenolic compounds in water, acetic anhydride is usually used as the favorable derivatization reagent for some advantages such as aqueous medium, high yield, and low reagent cost . In the presence of acetic anhydride under alkaline conditions, halophenols may be transformed into their corresponding esters in derivatization process.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of haloanisoles and halophenols in water using in situ acylation combined with solid‐phase microextraction with gas chromatography and mass spectrometry

Wang

Pan

Zhang

et al. 2016

J of Separation Science

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In this work, an in situ acylation combined with solid-phase microextraction coupled to gas chromatography and mass spectrometry method has been developed for simultaneously determining haloanisoles (2,4,6-trichloranisole, 2,4,6-tribromoanisole), and their direct precursors (2,4,6-trichlorophenol, 2,4,6-tribromophenol) and indirect precursors (2-chloropenol, 2,4-dichlorophenol, 2-bromophenol, 2,4-dibromophenol) in water. The key parameters for the solid-phase microextraction were determined by using Plackett-Burman screening and optimized by central composite optimization. Under optimal conditions, the eight compounds can be analyzed in a short time (33 min) with a strong linearity ranging from 2 to 200 ng/L (correlation coefficient greater than 0.996), showing good sensitivities with the limit of detection in a range of 0.23-0.91 ng/L and a limit of quantification of 0.77-3.03 ng/L, good repeatability (2.00-9.10%) and interday precision (1.67-11.3%). When environmental water samples were treated, the recoveries of target compounds were 75.5-127.3%, suggesting that the developed method could be applied in probing the origin of haloanisoles and monitoring halophenols and haloanisoles in natural waters at concentration levels of ng/L.

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Analysis of chlorophenols in environmental water using polydopamine-coated magnetic graphene as an extraction material coupled with high-performance liquid chromatography

Liu

Chen

et al. 2016

J. Sep. Science

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In this work, polydopamine-coated magnetic graphene nanocomposites were synthesized by a simple solvothermal reaction and self-polymerization of dopamine, and the as-made nanocomposites were successfully applied as an effective adsorbent for the preconcentration of the four chlorophenols in environmental water samples before high-performance liquid chromatography. The polydopamine-coated magnetic graphene nanocomposites have several advantages such as a high surface area, fast separation ability, super-hydrophilicity, and high peak intensities for aromatic analytes. Various parameters, including eluting solvent and volume, the amounts of absorbents, extraction time and elution time were optimized. Validation experiments showed that the optimized method had good linearity (r(2) > 0.9990), satisfactory precision (RSD < 6.7%) and high recovery (90-105%). The limits of detection were 0.013-0.020 μg/L and the limits of quantification ranged from 0.043 to 0.070 μg/L. The results indicated that the proposed method had advantages of convenience, good sensitivity, and high efficiency. The method has been applied successfully to analyze chlorophenols in real water samples.

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In situ derivatization combined to automated microextraction by packed sorbents for the determination of chlorophenols in soil samples by gas chromatography mass spectrometry

Cited by 31 publications

References 41 publications

Current trends on microextraction by packed sorbent – fundamentals, application fields, innovative improvements and future applications

Current trends on microextraction by packed sorbent – fundamentals, application fields, innovative improvements and future applications

Simultaneous determination of haloanisoles and halophenols in water using in situ acylation combined with solid‐phase microextraction with gas chromatography and mass spectrometry

Analysis of chlorophenols in environmental water using polydopamine-coated magnetic graphene as an extraction material coupled with high-performance liquid chromatography

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