The performance of an analytical method for determination of tbt during a six-year monitoring programme

✍ Scribed by M. J. Waldock; M. E. Waite

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 672 KB
• Volume: 8
• Category: Article
• ISSN: 0268-2605
• DOI: 10.1002/aoc.590080716

✦ Synopsis

Tributyltin (TBT) concentrations have been measured in UK waters, shellfish and sediments during the period 1986-1992. The methodology was based on conversion of alkyltin compounds to hydrides following extraction, and then measurement by gas chromatography with flame photometric detection. The collection of a large set of data to assess changes in environmental concentrations of organotins required use of good analytical quality control procedures at a time when no reference materials were available. An analytical quality control (AQC) system based on in-house quality control materials was devised and the performance of the method independently assessed by periodic participation in intercalibration exercises with other expert laboratories.