Evaluation of elements in a organic coating/paint 1

[MTPortugal]

Dear all

I need to evaluate, both quantitative and qualitative, the elements and molecular constituiton of a coating/ paint applied by spray. This coating is used in situations of low friction needs.
I'm going to do some qualititive analysis in XRD and SEM/ EDX. XRD should give me the results very easily but they are only qualitative. SEM/ EDX for elements with atomic number lower than 12 is not very correct and also i think i have present in this coating several organic compounds, such as Graphite, Teflon and others, that EDX cannot establish the difference between molecules (Carbon is present in all the compounds i think exist in the coating).
My question is:
What should be a accurate and available way of determening what's present in this coating?

Best regards

Paulo Vilaça

 

[CoryPad]

Fourier Transform InfraRed spectrometry (FTIR) can evaluate most organic compounds.

Inductively Coupled Plasma spectrometry (ICP) can evaluate the chemical composition of almost anything, although it can't differentiate molecules.

Gas Chromatography/Mass Spectrometry (GC/MS) can provide results for molecules.


Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[MTPortugal]

Ths a lot CoryPad.

In my college years i've worked sometimes with FTIR (i've forfot how!!!) but it gives me a qualitative analysis of what´s present in a determined sample. For quantitative analysis is ICP (which i ddin't knew before) suitable? what technique you think would be helpfull for a quantitative analysis?

Thank you in advance and best regards

 

[CoryPad]

Yes, ICP provides quanitative information, as does GC/MS.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.