Dear John,
I'm using PFE for offline data processing. I assigned anorthite as an Al std. When I delete the 1st line of several anorthite standard acquisitions, the software appears to take that line's Al data + total and substitute it into the following (undeleted) line. So in effect it seems to be combining the 1st and 2nd line's data under the 2nd line's number. I attach a screen shot compilation to illustrate what I mean (if it doesn't attach, I'll try posting it separately). The image compares undeleted vs deleted instances.
When I delete the 2nd line but keep the 1st, this does not happen.
Is this a bug, or is there something I'm missing in how the software performs it's routines?
Thanks,
Deon.
Hi Deon,
Ok, I think I see your misunderstanding. Remember the standards are "forced" to be the standard database concentrations if they are assigned as the primary standard for that element.
So if you delete a point from a standard, that will affect the value that the program iterates a standard to because the program uses the *average* of all the points of the standard sample for the standard intensity. If you delete a point from the standard, the remaining points are re-averaged and utilized again. This doesn't occur for unknowns.
Does that make sense?
Yep. Thank you.