کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1242998 | 1495852 | 2010 | 6 صفحه PDF | دانلود رایگان |
Triethyltin, tributyltin, diphenyltin and triphenyltin were selected as model compounds. The method is based on in situ ethylation and simultaneous headspace-solid-phase microextraction (HS-SPME) and gas chromatographic-mass spectrometry analysis (GC–MS). The extraction procedure was optimized studying some variables such as reaction time, salinity, sample volume and headspace volume. SPME–GC–MS and SPME–GC–FID techniques were compared; quality assurance parameters such as sensitivity, selectivity and precision were established. The proposed procedure showed limits of detection between 0.025 and 1 ng/L. The linearity was in the 0.025–5000 ng/L range. The precision expressed as relative standard deviations (RSD), were below 20%. Real wastewaters and seawaters were analyzed. The method permits controlling legislated annual average values.
Journal: Talanta - Volume 80, Issue 5, 15 March 2010, Pages 1888–1893