A doubt about GC-MS analysis: number of tests?

[CarbonPure]

Hello eveyone, I am new on this forum. Please help me about this doubt.
I want to carry out a GC-MS analysis on a plastic raw material to find out presence or absence of and quantitative analysis of following list of chemicals/impurities.

Please see the image file attached.

My doubt is : Should I carry out seperate test for each impurirty or one single GC-MS test will give both qualititative and quantitative analysis of all chemicals?
Like for group of PAHs one seperate test, for Phthalates one seperate test?
Or one single GC-MS analysis/test will give all the information?

Please help me out, I am thinking about such a problem after a long time.