TITLE

Dispersive liquid–liquid microextraction followed by gas chromatography–mass spectrometry for the rapid and sensitive determination of UV filters in environmental water samples

AUTHOR(S)
Negreira, N.; Rodríguez, I.; Rubí, E.; Cela, R.
PUB. DATE
September 2010
SOURCE
Analytical & Bioanalytical Chemistry;Sep2010, Vol. 398 Issue 2, p995
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The performance of the dispersive liquid–liquid microextraction (DLLME) technique for the determination of eight UV filters and a structurally related personal care species, benzyl salicylate (BzS), in environmental water samples is evaluated. After extraction, analytes were determined by gas chromatography combined with mass spectrometry detection (GC-MS). Parameters potentially affecting the performance of the sample preparation method (sample pH, ionic strength, type and volume of dispersant and extractant solvents) were systematically investigated using both multi- and univariant optimization strategies. Under final working conditions, analytes were extracted from 10 mL water samples by addition of 1 mL of acetone (dispersant) containing 60 μL of chlorobenzene (extractant), without modifying either the pH or the ionic strength of the sample. Limits of quantification (LOQs) between 2 and 14 ng L, inter-day variability (evaluated with relative standard deviations, RSDs) from 9% to 14% and good linearity up to concentrations of 10,000 ng L were obtained. Moreover, the efficiency of the extraction was scarcely affected by the type of water sample. With the only exception of 2-ethylhexyl- p-dimethylaminobenzoate (EHPABA), compounds were found in environmental water samples at concentrations between 6 ± 1 ng L and 26 ± 2 ng mL. [Figure not available: see fulltext.]
ACCESSION #
53556265

 

Related Articles

  • UVC LEDs for Fixed Wavelength Detection in HPLC. Venugopalan, Hari // Chromatography Today;May/Jun2015, Vol. 8 Issue 2, p12 

    The article reports on the implementation of ultraviolet C-range (UVC) lamps for fixed wavelength detection in HPLC separation technique and chromatographic analysis. It mentions that HPLC is used for protein purification, quality control in manufacturing, and biotechnological research. life. It...

  • Pinning Down Tailing Peaks. Hinshaw, John V. // LC-GC Europe;Jun2009, Vol. 22 Issue 6, p310 

    The article addresses the causes and effects of peak tailing, as well as in which chromatographers can measure and report their misshapen peaks. It discusses volumetric tailing, tailing because of adsorptive interactions, and tailing because of nonlinear retention. It also examines several...

  • USP <1058> Analytical Instrument Qualification and its Impact on the Chromatography Laboratory. Mcdowall, R. D. // LC-GC Europe;Jun2009, Vol. 22 Issue 6, p315 

    The article deals with United States Pharmacopeia (USP) on analytical instrument qualification (AIQ) in the U.S. It discusses its impact on the chromatography laboratory. It reveals potential problems with USP. It analysis the difference between positioning AIQ versus other laboratory quality...

  • Evaluation of Fatty Acids as Biochemical Markers for Source Identification of Indian Opium. Reddy, M.M. Krishna; Jayshanker, G.; Sashidhar, R.B.; Varshney, K.M.; Sarin, R.K // LC-GC Europe;Oct2005, Vol. 18 Issue 10, p541 

    This method describes an attempt to identify the source of licit Indian opium based on the fatty acid profile. The analysis was based on gas chromatography (GC) with flame ionization (FID) and mass spectrometric detectors (MS). A total of 124 Indian opium samples were collected and fingerprinted...

  • Use of non-thermal plasma and UV-light for removal of odour from sludge treatment. Andersen, K. B.; Feilberg, A.; Beukes, J. A. // Water Science & Technology;2012, Vol. 66 Issue 8, p1656 

    Non-thermal plasma (NTP) systems can be used for abatement of odour nuisances. Odour reductions are achieved by radical-initiated oxidation and dust collection in the plasma reactor. For some emissions a sequence of NTP followed by UV-light can improve the odour reduction further. This study was...

  • An instrumentation assembly for studying operational behavior of thermal gradient programmed gas chromatography. Rubey, Wayne A. // Review of Scientific Instruments;Sep94, Vol. 65 Issue 9, p2802 

    Extensive laboratory experiments and measurements are required for the operational evaluation and optimization of thermal gradient programmed gas chromatography (TGPGC). To accommodate these numerous laboratory investigations, an instrumentation assembly has been designed and constructed which...

  • The Jan�k-Type Gas Chromatographs of the 1950s. Ettre, Leslie S. // LC-GC North America;Sep2002, Vol. 20 Issue 9, p866 

    Examines the development and applications of the Janak-type gas chromatographs of the 1950s. Low-temperature fractional distillation; Liquid column and paper chromatographic analysis of mono- and diphenols; Use of activated charcoal and silica gel as the column packings for separating inorganic...

  • On the Interpretation of GC � GC Data. Harynuk, James; Gorecki, Tadeusz; Campbell, Colin // LC-GC North America;Sep2002, Vol. 20 Issue 9, p876 

    Describes the basic operation of comprehensive two-dimensional gas chromatography systems as well as how data is manipulated as they are transformed from raw signals to more familiar contour plots. Separation mechanisms used in the two dimensions; Two columns with different stationary phases...

  • The Beginnings of Gas Chromatography and Early Symposia Held in the United States.  // LC-GC North America;Sep2003, Vol. 21 Issue 9, p900 

    Discusses the beginnings of gas chromatography (GC) in the United States and symposia that played roles in the dissemination of GC in the U.S. Differences in the evolution of the GC technique in the U.S. and in Great Britain; Availability of commercial gas chromatographs and introductory...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics