Výsledky vyhledávání - "K. D. Kempfert"

Analysis of Antioxidants in Polyethylene Using Supercritical Fluid Extraction/Supercritical Fluid Chromatography and Infrared Detection

Autor: K. D. Kempfert, D. L. Dalrymple, R. C. Wieboldt

Publikováno v: Applied Spectroscopy. 44:1028-1034

Supercritical fluid extraction using 100% carbon dioxide is able to remove antioxidant additives from flaked polyethylene. SFE appears to be more selective for the lower-range low-MW polymer than Soxhlet-type extraction. This yields a chromatogram wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc140acdf0da5235d505f5d7e2b1b2e9
https://doi.org/10.1366/0003702904086641

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Analysis of pyrethrins using capillary supercritical fluid chromatography and capillary gas chromatography with fourier transform infrared detection

Autor: E. R. Campbell, Douglas W. Later, K. D. Kempfert, R. C. Wieboldt

Publikováno v: Journal of High Resolution Chromatography. 12:106-111

The six insecticidally active components in a commercial preparation of pyrethrin extract are separated by capillary gas chromatography (GC) and by capillary supercritical fluid chromatography (SFC). Thermal degradation of pyrethrin I and II are obse

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69b20f744ac30b0276d600f572379c30
https://doi.org/10.1002/jhrc.1240120210

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