Looking for help with interpretation of FTIR transmission plot

[CambridgeMart]

I've had an oil sample analysed by 2 separate labs; one of the labs came back with the analysis stating large amount of contamination with element X (sorry, I won't prejudice any responses with the element name for now). Unfortunately one lab used transmission FTIR and the other used absorption FTIR, so I personally can't equate the traces. Is anyone prepared to have a glance at the plot (poor copy unfortunately) below and ID the major contamination peaks (i.e. something you shouldn't normally find in an ester based oil?
TIA.

 

[Borek]

contamination with element X

Something doesn't sound right, IR/FTIR doesn't deal with elements.

This is a bit homeworkish so I am moving the thread.