Tin compounds in sediments

Lobinski et al. [78] speciated organotin compounds in sediment samples by capillary gas chromatography using helium microwave induced plasma emission spectrometry as a detector. They used the procedure to determine mono-, di- and tri- and some tetraalkylated tin compounds in sediments. 

A rapid method of analysis of organo-tin compounds in sediment and biological CRMs was developed (Pereiro et al., 1997). Ethylated butyltin compounds were separated isothermally on a multicapillary (MC) gas chromatographic column in less than 30 s as compared with 5-10 min on a regular capillary column. The MC column consisted of a bundle of about 900 1 m-long, 40 mm i.d. coated capillaries. The column was connected to a microwave-induced plasma atomic emission spectrometer. Phenyltin compounds were also included in the procedure. Detection limits of MBT, DBT and TBT were about 0.2ngml 1 (as tin). 

A combined use of single and multiple isotope enriched spike solution for the detection of butyl tin compounds in sediments by GC-ICP-MS has been evaluated in order to validate an analytical procedure proposed for routine determination." A mixture of mono-, di- and tributyl tin (MET, DBT and TBT, respectively) eiuiched in Sn and a triple spike solution containing each butyl tin species eiuiched with a different tin isotopes ( Sn and Sn) were employed to develop the analytical technique. This demoustrated the advautage provided by the combined use of single and multiple spike solutious to validate a methodology for the determination of butyl tin content by GC-ICP-MS after a quantitative solid-Uquid extraction procedure for species in unknown sediment." ... 

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