Comparison of Methodologies for Butyltin Species Determination

This chapter reviews, evaluates, and critically compares the major techniques for the determination of butyltin species; discusses an analytical protocol for good laboratory practice; and presents results of several interlaboratory comparisons, including the certification of PACS-1 (the world’s first certified reference material for butyltins). The certified concentrations for tributyl-, dibutyl-, and monobutyltin are 1.21 ± 0.24, 1.14 ± 0.20, and 0.28 ± 0.17 mg Sn kg-1 of dry sediment, respectively. The uncertainties are 95% confidence intervals for the analysis of an individual subsample.