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Headspace solvent microextraction as a simple and highly sensitive sample pretreatment technique for ultra trace determination of geosmin in aquatic media

Bagheri, H ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1002/jssc.200500182
  3. Publisher: 2006
  4. Abstract:
  5. A headspace solvent microextraction method was developed for the trace determination of geosmin, an odorant compound, in water samples. After performing the extraction by a microdrop of an organic solvent, the microdrop was introduced directly into a GC-MS injection port. One-at-the-time optimization strategy was applied to investigate and optimize some important extraction parameters such as type of solvent, drop volume, temperature, stirring rate, ionic strength, sample volume, and extraction time. The analytical data exhibited an RSD of less than 5% (n = 5), a linear calibration range of 5-900 ng/L (r2 > 0.998), and a detection limit of 0.8 and 3.3 ng/L using two different sets of selected ions. The proposed method was successfully applied to the extraction and determination of geosmin in the spiked real water sample and reasonable recovery was achieved. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinham
  6. Keywords:
  7. Gas chromatography ; Ionic strength ; Ions ; Mass spectrometry ; Optimization ; Organic solvents ; Temperature measurement ; Aquatic media ; Environmental analysis ; Geosmin ; Headspace analysis ; Trace determination ; Solvent extraction ; Analytic method ; Calibration ; Chemical analysis ; Linear system ; Liquid phase microextraction ; Methodology ; Priority journal ; Process optimization ; Quantitative analysis ; Reproducibility ; Sensitivity and specificity ; Temperature sensitivity ; Water analysis
  8. Source: Journal of Separation Science ; Volume 29, Issue 1 , 2006 , Pages 57-65 ; 16159306 (ISSN)
  9. URL: https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jssc.200500182