Investigation of various polymeric materials for set-point temperature calibration in pyrolysis–gas chromatography–mass spectrometry (Py–GC–MS)
✍ Scribed by L.M. Lund; P.M.L. Sandercock; G.J. Basara; C.C. Austin
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 271 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0165-2370
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✦ Synopsis
The precision and long-term stability of pyrolysis probe set-point temperature calibration of a commercially available coiled-filament pyrolyzer were assessed for a variety of polymers, including Kraton 1 D1107, high-density polyethylene (HDPE), and low-density polyethylene (LDPE). While plots of peak area ratios for Kraton 1 and HDPE versus pyrolysis set-point temperatures produced statistically significant linear curves at the 95% confidence level, poor precision was observed at each of the set-point temperatures. Plots of peak area ratios for LDPE, in particular for n-C 16 alkyldiene/n-C 16 alkene peak area ratios, also exhibited good linearity but showed significant improvements in precision at each set-point temperature. In addition, replicate analysis over a 10-month period of peak area ratios for polymers pyrolyzed at a set-point temperature of 900 8C confirmed the improved method precision obtained from pyrolysis of LDPE and analysis of the n-C 16 alkyldiene/n-C 16 alkene ratio when compared to the precision obtained from pyrolysis of Kraton 1 D1107 or high-density polyethylene.