Dispersive liquid–liquid microextraction method based on solidification of floating organic droplet for the determination of thiamphenicol and florfenicol in environmental water samples

Peng, Guilong; He, Qiang; Al-Hamadani, Sulala M. Z. F.; Zhou, Guangming; Liu, Mengzi; Zhu, Honghui; Chen, Junhua

doi:10.1016/j.ecoenv.2015.02.025

Cited by 29 publications

(6 citation statements)

References 27 publications

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“…The technique is simple and rapid, yielding high recoveries. DLLME is used primarily to isolate high‐molecular‐weight compounds, such as pesticides insecticides , antibiotics and hormones .…”

Section: Introductionmentioning

confidence: 99%

Application of dispersive liquid–liquid microextraction and gas chromatography with mass spectrometry for the determination of oxygenated volatile organic compounds in effluents from the production of petroleum bitumen

Boczkaj

Makoś

Przyjazny

2016

J of Separation Science

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We present a new procedure for the determination of oxygenated volatile organic compounds in samples of postoxidative effluents from the production of petroleum bitumens using dispersive liquid-liquid microextraction and gas chromatography with mass spectrometry. The eight extraction parameters were optimized for 43 oxygenated volatile organic compounds. The detection limits obtained ranged from 0.07 to 0.82 μg/mL for most of the analytes, the precision was good (relative standard deviation below 2.91% at the 5 μg/mL level and 4.75% at the limit of quantification), the recoveries for the majority of compounds varied from 70.6 to 118.9%, and the linear range was wide, which demonstrates the usefulness of the procedure. The developed procedure was used for the determination of oxygenated volatile organic compounds in samples of raw postoxidative effluents and in effluents after chemical treatment. In total, 23 compounds at concentration levels from 0.37 to 32.95 μg/mL were identified in real samples. The same samples were also analyzed in the SCAN mode, which resulted in four more phenol derivatives being identified and tentatively determined. The studies demonstrated the need for monitoring volatile organic compounds content in effluents following various treatments due to the formation of secondary oxygenated volatile organic compounds.

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Section: Introductionmentioning

confidence: 99%

Application of dispersive liquid–liquid microextraction and gas chromatography with mass spectrometry for the determination of oxygenated volatile organic compounds in effluents from the production of petroleum bitumen

Boczkaj

Makoś

Przyjazny

2016

J of Separation Science

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“…DLLME meets all the requirements of green chemistry since it uses only small volumes of organic solvents while being simple and rapid. DLLME is mostly used in the analysis of high‐molar‐mass compounds, including pesticides , insecticides , antibiotics , and hormones .…”

Section: Introductionmentioning

confidence: 99%

New procedure for the control of the treatment of industrial effluents to remove volatile organosulfur compounds

et al. 2016

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We present a new procedure for the determination of volatile organosulfur compounds in samples of industrial effluents using dispersive liquid-liquid microextraction and gas chromatography with flame photometric detection. Initially, the extraction parameters were optimized. These included: type and volume of extraction solvent, volume of disperser solvent, salting out effect, pH, time and speed of centrifugation as well as extraction time. The procedure was validated for 30 compounds. The developed procedure has low detection limits of 0.0071-0.49 μg/L and a good precision (relative standard deviation values of 1.2-5.0 and 0.6-4.1% at concentrations of 1 and 10 μg/L, respectively). The procedure was used to determine the content of volatile organosulfur compounds in samples of effluents from the production of bitumens before and after chemical treatment, in which six compounds were identified, including 2-mercaptoethanol, thiophenol, thioanisole, dipropyl disulfide, 1-decanethiol, and phenyl isothiocyanate at concentrations ranging from 0.47 to 8.89 μg/L. Problems in the determination of organosulfur compounds related to considerable changes in composition of the effluents, increase in concentration of individual compounds and appearance of secondary pollutants during effluent treatment processes are also discussed.

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“…EVA-DLLME-SFOD requires the extractant to have a low freezing point, significant ability to extract the target analytes, and be easily separated from the sample solution. 22 Based on these requirements, 1-undecanol and 1-dodecanol were selected as potential extraction solvents.…”

Section: Resultsmentioning

confidence: 99%

“…To improve the efficiency of the extractant collection process, the technique of solidification of floating organic droplets (SFOD) was introduced into the DLLME process. 22–24 DLLME-SFOD procedure was based on a low-density, low-freezing-point organic extraction solvent which allowed it to be easily collected after rapidly cooling the sample in an ice bath. 20,25 The collected extractant was subsequently allowed to melt and can then be analyzed chromatographically.…”

Section: Introductionmentioning

confidence: 99%

Rapid analysis of triazine herbicides in fruit juices using evaporation-assisted dispersive liquid–liquid microextraction with solidification of floating organic droplets and HPLC-DAD

Niu

et al. 2022

Anal. Methods

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Dispersive liquid–liquid microextraction method based on solidification of floating organic droplet for the determination of thiamphenicol and florfenicol in environmental water samples

Cited by 29 publications

References 27 publications

Application of dispersive liquid–liquid microextraction and gas chromatography with mass spectrometry for the determination of oxygenated volatile organic compounds in effluents from the production of petroleum bitumen

Application of dispersive liquid–liquid microextraction and gas chromatography with mass spectrometry for the determination of oxygenated volatile organic compounds in effluents from the production of petroleum bitumen

New procedure for the control of the treatment of industrial effluents to remove volatile organosulfur compounds

Rapid analysis of triazine herbicides in fruit juices using evaporation-assisted dispersive liquid–liquid microextraction with solidification of floating organic droplets and HPLC-DAD

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