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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
Author(s) -
Bagheri Habib,
Salemi Amir
Publication year - 2006
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200500182
Subject(s) - chromatography , geosmin , detection limit , extraction (chemistry) , solvent , chemistry , calibration curve , trace amounts , ionic strength , sample preparation , injection port , volume (thermodynamics) , gas chromatography , analytical chemistry (journal) , materials science , aqueous solution , odor , medicine , alternative medicine , physics , organic chemistry , pathology , quantum mechanics , composite material
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 ( r 2 > 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.