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Dear David, depending on your digestion procedure, you may be confronted to tin volitization as tin chlorides. We're obtening very good results since now more than 20 years at C2RMF by using sealed PFA vessels for digestion in aqua regia. You may be interested by this paper where we published our analytical protocol, including the digestion procedure : Bourgarit, D., & Mille, B. (2003). The elemental analysis of ancient copper-based artefacts by Inductively-Coupled-Plasma Atomic-Emission-Spectrometry (ICP-AES) : an optimized methodology reveals some secrets of the Vix Crater. _Measurement Science and Technology_, _14_, 1538‑1555. All the best, Benoit Le 2018-10-03 22:05, Killick, David J - (killick) a écrit : > We are using a new ICP lab that is more used to analyzing soils than metals, and are getting back numbers that suggest substantial loss of tin (compared to microprobe analyses of the same objects). Can any of you provide a tested protocol for ICP analysis of tin-bearing copper alloys? I've tried searching the Agilent and Perkin Elmer application notes but haven't yet come up with anything useful. > > ------------------------- > > To unsubscribe from the ARCH-METALS list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=ARCH-METALS&A=1 [1] Links: ------ [1] https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=ARCH-METALS&A=1 ---------------------------------------------------------------------- Merci de nous aider à préserver l'environnement en n'imprimant ce courriel et les documents joints que si nécessaire. ######################################################################## To unsubscribe from the ARCH-METALS list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=ARCH-METALS&A=1