Fast analysis of trichloroanisols in wine using solid phase micro extraction and fast-GC/MS

来源 :DaLian Internationall Symposia and Exhibition on Chromatogra | 被引量 : 0次 | 上传用户:qyyqyy202
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Wine can go off (corked) when it comes in contact with the cork.Therefore it is vitally important to detect corked wine in order to maintain the quality.Trichloroanisols (TCAs) are regarded as the main cause of corked wine.Because these compounds are low odor threshold, tlhe monitoring requires highly sensitive detection method.In general the organoleptic test is used for the evaluation of odors.The features of this test are a fast method but lower quantitative accuracy.Alternatively the analytical instrument method shows superior quantitative accuracy but with longer analysis time and lower sensitivity.Conventional analytical instrument methods include the purge & trap and thermal desorption-GC/MS methods, which have a high degree of enrichment.In this study, the solid phase micro extraction (SPME) and the fast GC/MS were applied to this analysis to increase sensitivity and reduce analysis time.
其他文献
目的:与单一复方甘草酸苷用药治疗相比,探究消疕汤+复方甘草酸苷联合用药在治疗寻常型银屑病中的临床效果.方法:选择60例寻常型银屑病患者作为研究对象,并随机分为对照组和治
Capillary Electrochromatography (CEC) is a new microanalytical technique that uses capillary columns with a stationary phase and an electroosmotically driven mo
会议
【摘 要】BIM是建筑技术和核心业务的信息化,是创建并利用数字化模型对建设项目进行设计、建造和运营全工程管理、优化的方法和工具,其内涵体现在技术、过程、价值等多方面,建筑信息化技术的发展是未来相当长一段时间内行业发展的重心。本文分析了BIM在机电工程施工总承包项目管理中的应用,并详细阐述了其应用价值。  【关键词】BIM;施工总承包;机电;建模  一、BIM概述  建筑信息模型(Building
  One of the drugs screened for routinely in workplace drug testing is marijuana.One of the safe.ways to analyse marijuana is to test for Carboxy THC in hair.
会议
现代城市建设与发展中,城市规划是决定城市宜居水平的关键、是决定城市公共交通运输能力的关键。在我国城市大力发展过程中,城市规划与环境规划存在着很大的矛盾。这一矛盾将决
  Human erythropoietin (hEPO), an endogenously produced glycoprotein, plays a fundamental role in erythropoiesis controlling the formation of red blood cells.
会议
  The selectivity in gas chromatographic chiral separation can be modified by: 1) the nature of chiral stationary phase-in this case the adjustment of selecti
会议
留点温度计(下简称温度计)常用于检查压力蒸汽灭菌是否达到规定温度,我们在工作中发现,有的温度计显示的温度互相间有差异。为进一步证实上述问题,我们进行了如下试验。试验
  The quality of wine distillate depends on many factors, e.g.grape cultivars, harvesting time, quality of grape cider, activity of yeasts, fermentation, used
会议
  Nucleoside analogues comprise an important class of current and potential anticancer and antiviral drugs.These agents usually require activation by intracel
会议