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Comparison of diferent aroma active compounds of Sichuan Dark brick tea (Camellia sinensis) and Sichuan Fuzhuan brick tea using gas chromatography–mass spectrometry (GC–MS) and aroma descriptive profle tests
aroma active compounds Sichuan Dark brick tea Sichuan Fuzhuan brick tea GC–MS aroma descriptive profle tests
2024/7/31
Sichuan dark brick tea (Camellia sinensis) and Sichuan Fuzhuan brick tea have signifcantly diferent aroma characteristics although both of them have almost the same processing methods. Thus, these two...
Determination of pesticide residues in avocado and almond by liquid and gas chromatography tandem mass spectrometry
pesticide residues almond
2014/11/26
This report describes a validation data of 279 pesticides using a
multiresidue method by LC-MS/MS and GC-MS/MS in avocado and
almond.
Pesticide analysis in teas and chamomile by liquid chromatography and gas chromatography tandem mass spectrometry
teas chamomile chromatography
2014/11/26
This report describes a validation data of 86 pesticides using a
multiresidue method by LC-MS/MS and GC-MS/MS in green tea, red
tea, black tea and chamomile.
Determination of Organophosphorus Pesticide Residues in Onion and Welsh Onion by Gas Chromatography with Pulsed Flame Photometric Detector
organophosphorus pesticide residues onion welsh onion sulfur-matrices gas chromatography pulsed flame photometric detector
2009/3/7
A rapid gas chromatographic method for determining organophosphorus pesticide residues in allium such as onion and welsh onion containing high levels of sulfur-matrices was studied. A sample was e...
Rapid Method for the Determination of 180 Pesticide Residues in Foods by Gas Chromatography/Mass Spectrometry and Flame Photometric Detection
pesticide residue analysis multiresidue graphitized carbon black / primary secondary amine
2009/3/5
A method was established for the determination of 180 pesticide residues in fruits and vegetables. The procedure involved extraction with acetonitrile, followed by a salting-out step with anhydrous ...
LEVELS OF BACTERIAL ENDOTOXIN IN AIR OF ANIMAL HOUSES DETERMINED WITH THE USE OF GAS CHROMATOGRAPHY – MASS SPECTROMETRY AND LIMULUS TEST
endotoxin organic dust air animal houses gas chromatography
2010/12/23
Air samples were collected on glass fi bre fi lters in 22 animal houses and 3 hay storage barns and examined for the presence of bacterial endotoxin with the Limulus (LAL) test and the gas chromatogra...