Improved routine speciation of organotin compounds in environmental samples by pulsed flame photometric detection

The high toxicity of the organotin species requires sensitive analytical methods in order to understand the origins of pollution and perform monitoring programs in the water cycle. The optimisation of a new detection method, pulsed flame photometric detection (PFPD), is reported for the simultaneous...

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Bibliographic Details
Published in:Journal of Chromatography A 2000-10, Vol.896 (1), p.149-158
Main Authors: Bancon-Montigny, Ch, Lespes, G., Potin-Gautier, M.
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Animal, plant and microbial ecology
Applied ecology
Applied sciences
Biological and medical sciences
Chemical Sciences
Ecotoxicology, biological effects of pollution
Exact sciences and technology
Fish and seafood industries
Food industries
Fundamental and applied biological sciences. Psychology
Gas Chromatography-Mass Spectrometry - methods
Organotin compounds
Organotin Compounds - classification
Pollution
Reproducibility of Results
Sensitivity and Specificity
Techniques
Wastes
Water Pollutants, Chemical - analysis
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Summary:The high toxicity of the organotin species requires sensitive analytical methods in order to understand the origins of pollution and perform monitoring programs in the water cycle. The optimisation of a new detection method, pulsed flame photometric detection (PFPD), is reported for the simultaneous determination of butyl-, phenyl- and octyltins. The methodology of the experimental designs at two levels was used. It allows the evaluation of the influence of the three gas flow-rates on the peak heights and resolution between the closest peaks obtained using two different wavelengths of detection (390 and 611 nm). The modelling of these two responses, according to second-order polynomials, leads to the precise adjustment of the operating conditions. PFPD has shown two significant improvements over conventional flame photometric detection: increased sensitivity (absolute detection limits: 0.07 to 2 pg as Sn) and greater selectivity, whatever the wavelength used. This new analytical process was validated by the analysis of certified reference material and spiked river water. It was used in routine analysis of environmental samples (wastewater, sludge, sand and oyster).
ISSN:0021-9673
1873-3778
DOI:10.1016/S0021-9673(00)00595-1