ISOTOPE-DILUTION INDUCTIVELY COUPLED PLASMA MASS-SPECTROMETRIC DETERMINATION OF TOTAL TIN IN NIES FISH TISSUE REFERENCE MATERIAL

The National Institute for Environmental Studies has recently undertaken the preparation of fish tissue reference material for use in the speciation of total tin, tributyltin and triphenyltin. Isotope dilution/inductively coupled plasma mass spectrometry (ICP-MS) was used for the determination of trace levels of total tin in fish tissue and other biological reference materials. The isotope dilution/ICP-MS showed high accuracy and precision, thus the use of this analytical technique was indispensable in the certification process of total tin in the fish tissue reference material. Analytical procedures for the isotope dilution analysis and certification procedures based on collaborative analysis are described.