We used FTIR-ATR to determine vinyl acetate from a glue stick using the internal standards method....

We used FTIR-ATR to determine vinyl acetate from a glue stick using the internal standards method. We used the standards with 12, 18, 25, and 40% poly(ethylene-co-vinyl acetate). The peak height at 1020 cm^-1 is due to the vinyl acetate copolymer (our analyte) and the peak height at 720 cm^-1 is due to the polyethylene (the internal standard). Our unknown is a store-bought glue stick that is EVA-based.

We found the peak heights for the standards for the peaks on 720 cm^-1 and 1020 cm^-1. What I am aware of is that those are uncorrected peaks. How do you correct the peaks?

After that, we plan on taking the ratio of the concentration in percentages and the ratio of absorbances and plot them, using it as a calibration curve.

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queen_honey_blossom answered 11 months ago

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We used FTIR-ATR to determine vinyl acetate from a glue stick using the internal standards method....

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