>I've been asked if we can analyse 34S/32S of As2S3 (arsenic trisulphide,
>orpiment) by elemental analyser + conflo IRMS. Bearing in mind the low
>melting/boiling points of this and other arsenic compounds, I'm concerned
>about contamination damage to the instrument.
>Does anyone have experience of 34S/32S of arsenic sulphides?
>Tim H.E. Heaton
I had similar concerns about performing EA-d34S analyses of elemental
sulphur a while back, and it turned out that these analyses were no
problem, although I tend to add a little V2O5 as a precaution to try
and help jolly the combustion along (run conditions are otherwise
standard for EA-d34S). We've analysed a few realgar samples in the
past, again without any problem, so I suspect that orpiment would run
OK as well.
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