How do I obtain total sulfur from xrf data, with sulfur reported as wt.%SO3 and ppm S for each sample?

I have XRF data obtained by both pressed pellets and fuse disk. from the result I want to calculate the total sulphur. my sulphur is reported as wt.%SO3 from fuse disk and as ppm S from pressed...

26 October 2016 6,339 1 View