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Optimization of an extraction procedure for the accurate determination of total tin in eighteen Geological Survey of Japan rock reference materials

October 11, 1993

A fusion-extraction procedure for the determination of total tin in rocks and sediments by graphite furnace atomic absorption spectrometry (GFAAS) was reexamined and modified to obtain the optimum accuracy and precision. Several variations based on increases in the sample weight or extraction ratio were compared based on the determination of tin in 18 Geological Survey of Japan (GSJ) reference materials. The most accurate and precise procedure was found to be an 8:1 extraction of a 0.5 g rock sample fused with lithium metaborate and dissolved in 7.5% hydrochloric acid, using a 4% solution of trioctylphosphine oxide in methyl isobutyl ketone (TOPO-MIBK). Rocks containing

Publication Year 1993
Title Optimization of an extraction procedure for the accurate determination of total tin in eighteen Geological Survey of Japan rock reference materials
DOI 10.2116/analsci.9.681
Authors H.N. Elsheimer
Publication Type Article
Publication Subtype Journal Article
Series Title Analytical Sciences
Index ID 70243547
Record Source USGS Publications Warehouse