[Eddzzz_2012]

Hey everyone,

I have a set of data that needs analysing. What sort of things can I compare.

I could put the data in an excel spreadsheet and order it but that's about all I would know to do, as well as some graphs. What else can I do to compare the values?

[jadeite78]

The only thing I see is grain size vs concentration for each metal.

[curiouscat]

You can find the total conc. of each metal in 1 gm sample.

Also can plot cumulative and differential curves for total mass as well as each metal. It's quite a rich dataset I think.

Also lets you answer questions like "If the legal limit on Pb is x μg / gm  what particulate filter  (upto what sizes do I need to get rid of) do I need" etc.

The ranges show some gaps and overlap though. Will be interesting how you handle that.

[fledarmus]

Some total metal concentrations might also be useful. Are some particle sizes more metallic than others?

I would plot the total metal concentration and the concentrations of each metal on a graph. Perhaps the changing ratios of metals might suggest the source of the particular particles?

[Eddzzz_2012]

Cheers for the reply, I'll get to it!