Determination of organotins in aquatic plants by headspace SPME followed by GC-PFPD determination

Optimal conditions of headspace solid-phase microextraction followed by gas chromatography coupled to pulsed flame photometric detection (SPME-GC-PFPD) have been investigated to validate the analysis of 11 organotin compounds in plant matrices including methyl-, butyl-, and phenyltin compounds. The...

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Bibliographic Details
Published in:International journal of environmental analytical chemistry 2006-08, Vol.86 (10), p.733-742
Main Authors: El Ati-Hellal, Myriam, Lespes, Gaetane, Dachraoui, Mohamed
Format: Article
Language:English
Subjects:
Algae of Bizerte Lagoon
Analytical chemistry
Chemical Sciences
Environmental Sciences
Headspace solid-phase microextraction
Organotin compounds
Validation
Vegetal matrices
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Summary:Optimal conditions of headspace solid-phase microextraction followed by gas chromatography coupled to pulsed flame photometric detection (SPME-GC-PFPD) have been investigated to validate the analysis of 11 organotin compounds in plant matrices including methyl-, butyl-, and phenyltin compounds. The extraction of organotin compounds from vegetal matrices has been carried out using optimized conditions of HCl-based extraction. The use of headspace SPME to preconcentrate the analytes allowed most of the detection limits to be obtained sub-0.5 ng(Sn) g −1 . The precision evaluated using RSD with six replicates ranges between 5 and 10% (except for triphenyltin: 17%). The accuracy of the method was validated on spiked or polluted vegetal samples taken from Bizerte Lagoon (Tunisia) and by comparison with classical liquid-liquid extraction (LLE). These results highlight the suitability of the selected method for organotin control in complex environmental matrices such as aquatic plants.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067310500489577