I'd like to ask you a few questions about the methods you suggested. First, why are we performing wet oxidation with HNO0 on an ignited sample? Will this process really prevent damage to the Pt crucibles?
My other question concerns the metaborate flux you suggested. The product codes distinguish between pure and ultra-pure. Both are clearly quite pure fluxes. How will I know which one to choose?
I'm working with PI and we have a Zr crucibles that aren't the right size for the Katanax X-000 sample holder, and we think we need to test the samples with high sulfur content using Na0O0 flux. The only way to try this method is to perform the dissolution process in a normal container. Could you describe the dissolution process using Zr crucibles and peroxide flux with a container?
By the way, in the document you shared with me describing the peroxide flux method, the Zr crucible-peroxide flux method was suggested for a sample with concentrations of 00% Cu, 00% Fe, 00% S, and 0% Si. The element values in our samples are not even that high. The highest values are 0.0% S, 0-0% Cu, and 00% Fe. Do you think this method is necessary for our samples?