Journal
CURRENT ANALYTICAL CHEMISTRY
Volume 5, Issue 4, Pages 339-346Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157341109789077696
Keywords
Adsorbent; Aromatic sulfur compounds; Crude oil; Seawater pollution; GC-MS
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Gas chromatographic analysis of Aromatic Sulfur Compounds in distilled water and seawater samples has been performed after adsorption from 100 mL water sample onto a cartridge containing a mixture of 50 mg NH2- and 50 mg C-18-bonded porous silica. The Aromatic Sulfur Compounds are desorbed with a mixture of acetone-trichloromethane (1:1), which is concentrated and analysed by gas-chromatography coupled to flame ionization or mass spectrometry detectors. The average recoveries of 80 ng mL(-1) of each Aromatic Sulfur Compound from distilled water and 5.0-160 ng mL(-1) from seawater samples are >= 93.5% with a standard deviation <= 2.7. The limits of detection are 0.1 and 0.08 mu g mL(-1) for thiophene-2-carboxaldehyde and benzothiophene, respectively, and 0.07 and 0.06 mu g mL(-1) for dibenzothiophene and thiantrene, respectively, in GC-FID with a relative standard deviation <= 8.2, whereas they are 0.08 and 0.06 mu g mL(-1) for thiophene-2-carboxaldehyde and benzothiophene, respectively, and 0.05 and 0.04 mu g mL(-1) for dibenzothiophene and thiantrene, respectively, in selected ions monitoring (SIM) with a relative standard deviation <= 7.8.
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