Quantitative Analysis of Polymer Additives with MALDI-TOF MS Using an Internal Standard Approach |
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Authors: | Clemens Schwarzinger Stefan Gabriel Susanne Beißmann Wolfgang Buchberger |
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Institution: | (1) Institute for Chemical Technology of Organic Materials, Johannes Kepler University, Linz, Austria;(2) Institute of Analytical Chemistry, Johannes Kepler University, Linz, Austria |
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Abstract: | MALDI-TOF MS is used for the qualitative analysis of seven different polymer additives directly from the polymer without tedious
sample pretreatment. Additionally, by using a solid sample preparation technique, which avoids the concentration gradient
problems known to occur with dried droplets and by adding tetraphenylporphyrine as an internal standard to the matrix, it
is possible to perform quantitative analysis of additives directly from the polymer sample. Calibration curves for Tinuvin
770, Tinuvin 622, Irganox 1024, Irganox 1010, Irgafos 168, and Chimassorb 944 are presented, showing coefficients of determination
between 0.911 and 0.990. |
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Keywords: | |
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