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Questions related from Mahsa Lotfi Marchoubeh
We are trying to sample PMMA's combustion products and are looking into the amount of MMA in the "smoke". We are looking into air sampling possibilities that don't involve the desorption of MMA in...
14 July 2023 9,646 0 View
Hello, we have standard solutions of VOCs (benzene, toluene, ethylbenzene, xylene, styrene) that come to us in ampules. The solvent is methanol. Once we open these ampules, we transfer them to...
26 June 2023 882 2 View
Can someone explain the chemical phenomena behind this? I spike my sorbent bed (tenax ta) with benzene, toluene, ethylbenzene, xylene, styrene, naphthalene, pyrene, and benzo[a]pyrene. The boiling...
16 June 2023 9,049 1 View
I was told that it's best to develop my GC detection and quantification method with the single quad mass spec and then switch the method to FID to generate the calibration curves and do...
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I am performing some Py-GC/MS experiments on raw wood samples at 800C and analyzing the pyrolysates using an HP-5ms column and a single quad MS. I can identify BTEXS and naphthalene in my results,...
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Hello all, I have some microvials that go into liners for TDU analysis. They have been sitting in open air for a while now. I want to bake them to make them clean for the GC analysis. Is there a...
24 November 2021 4,680 4 View
Hi all, I am setting up a new lab with G/MS capabilities and I want to start ordering chemicals for it. Can you guys share with me what are the most basic solvents needed for a GC lab? We will be...
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