| Title: | Analysis of odour and taste problems in high-density polyethene |
| Author(s): | Villberg K; Veijanen A; Gustafsson I; Wickstrom K; |
| Address: | "University of Jyvaskyla, Department of Chemistry, Finland" |
| DOI: | 10.1016/s0021-9673(97)00769-3 |
| ISSN/ISBN: | 0021-9673 (Print) 0021-9673 (Linking) |
| Abstract: | "The compounds that cause off-flavours in plastics, have been recognized mainly as carbonyl compounds (aldehydes, ketones and esters). They occur in low concentrations, and due to their low-threshold odour concentrations, their typical odours were identified. Most of these off-flavour compounds are volatile. Chemical analysis of smelling compounds requires a very sensitive method with a high-resolution capability. The analysis of volatile organic compounds (VOCs) in high density polyethene (HD-PE) granules and waters in which the granules have been shaken for 4 h, were carried out by gas chromatography-mass spectrometry-sniffing system (GC-MS-SNIFF) and by gas chromatography-fourier transform infrared spectroscopy-sniffing system (GC-FTIR-SNIFF). A purge-and-trap technique was used to introduce the VOCs from samples into the gas chromatograph. Leaching waters of HD-PE granules were also evaluated by panel. This panel agreed upon six descriptive attributes for odour: sweet, chemical, stale, dusty, foul and floor-cloth. The attributes for taste were: sweet, metallic, stony, pungent, dusty, plastic, foul, stink bug and candle grease" |
| Keywords: | "Chromatography, Gas/*methods Mass Spectrometry/*methods Odorants/*analysis Polyethylenes/*chemistry Reproducibility of Results Sensitivity and Specificity *Taste Water Supply/*analysis/standards;" |
| Notes: | "MedlineVillberg, K Veijanen, A Gustafsson, I Wickstrom, K eng Comparative Study Research Support, Non-U.S. Gov't Netherlands 1998/02/17 J Chromatogr A. 1997 Dec 12; 791(1-2):213-9. doi: 10.1016/s0021-9673(97)00769-3" |
