6533b7dcfe1ef96bd1272951
RESEARCH PRODUCT
Improving detection limits for organotin compounds in several matrix water samples by derivatization-headspace-solid-phase microextraction and GC-MS.
L. Segovia-martínezA. Seco-torrecillasPilar Campíns-falcóA. Bouzas-blancosubject
Detection limitCromatografia de gasosChromatographyAnalytical chemistrySolid-phase microextractionAnalytical Chemistrylaw.inventionMatrix (chemical analysis)chemistry.chemical_compoundchemistrylawFlame ionization detectorSample preparationGas chromatographyCompostos organometàl·licsAigües residuals AnàlisiGas chromatography–mass spectrometryDerivatizationdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 | Talanta |