Analytical chemistry of butyltins

Document Type

Article

Publication Date

1988

Publication Title

Oceans '88: Proceedings - a Partnership of Marine Interests; Baltimore, MD, USA

First Page

1716

Keywords

Chemistry, Chromatographic Analysis, Marine Biology, Oceanography--Sedimentation, Tin Compounds--Environmental Impact, Analytical Chemistry, Butyltins, Cation Exchange, Citrate Buffers, Summary Form Only, Ports and Harbors

Abstract

Summary form only given. To arrive at certified concentrations of butyltins in standard reference materials (SRMs) it is imperative to have results from at least two independent analytical techniques. To satisfy this requirement, analytical techniques have been developed for the determination of butyltins in a harbor sediment SRM, PACS-1. These are (1) gas chromatography-flame photometric detection (GC-FPD) of butyltins as chlorides, (2) high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICPMS), and (3) ion spray mass spectrometry/mass spectrometry (ISMS/MS). In GC-FPD, butyltins are extracted from the sediment as chlorides, and separated and quantitated with gas chromatography as such. Two extractants may be used: toluene/isobutyl acetate/tropolone and hexane/isobutyl acetate. Extracted butyltins are separated by cation exchange in HPLC-ICPMS using citrate buffers and determined on-line with ICPMS. ISMS/MS is only applicable to tributyltin (TBT) determination.

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