نتایج جستجو برای: spme gc ms
تعداد نتایج: 146198 فیلتر نتایج به سال:
Volatile organic compounds (VOCs) from uninfested and infested broccoli plant samples with green peach aphid Myzus persicae were investigated by headspace solid microextraction (HS-SPME) combined gas chromatography mass spectrometry (GC-MS). Overall, 25 identified in plants. The HS-SPME GC-MS analysis of the volatiles described differences between samples. Based on peak area analysis, VOCs sign...
Livestock is an important source of volatile organic compounds (VOCs) that can cause odor nuisance and pollution. The main sources these VOCs in livestock are effluents their management system. In this study, the applicability headspace-solid phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS) for VOC characterization effluent samples both laboratory field te...
Two methods for the extraction, identification and quantification of the highest occurrence and lowest perception threshold off-flavours in fifteen different samples of Brazilian Pilsner beers were developed. For this purpose, headspace solid phase microextraction in combination with a gas chromatography coupled to a mass spectrometric detection (HS-SPME-GC-MS) as well as headspace extraction i...
To investigate the utility of comprehensive GC×GC gas chromatography metabolomics in finding varietal markers among volatile compounds non-aromatic red wines, representative samples two most important Croatian monovarietal Plavac mali and Teran, were subjected to analysis by both conventional chromatography–mass spectrometry (GC-MS) two-dimensional with time-of-flight mass (GC×GC-TOF-MS) after ...
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