Hodgson Alex, Cochran Jack
VUV Analytics, Inc - Applications, 715 Discovery Blvd, Suite 502, Cedar Park, TX 78613.
J AOAC Int. 2019 Mar 1;102(2):655-658. doi: 10.5740/jaoacint.18-0284. Epub 2018 Nov 19.
: Traditional detectors such as flame ionization detection and MS have issues with coeluting isomers like terpenes; however, unique vacuum UV (VUV) absorbance spectra can be used to deliberately compress chromatography. : Deconvolution capabilities under various run conditions of GC-MS and GC-VUV are compared. : A standard terpenes mix and tea tree essential oil were run on both GC-MS (63 and 14 min run times) and GC-VUV (22, 11, and 7 min run times). : The three GC-VUV methods showed good precision for 10 terpenes, as well as with the 63 min GC-MS method. The 14 min GC-MS method struggled precisely quantifying some terpenes. : GC-VUV allows for faster run times while providing the same level of quantitative accuracy.
传统的检测器，如火焰离子化检测和质谱，对于像萜烯这样的共洗脱异构体存在问题；然而，独特的真空紫外（VUV）吸收光谱可用于特意压缩色谱分析。比较了气相色谱-质谱联用仪（GC-MS）和气相色谱-真空紫外光谱仪（GC-VUV）在各种运行条件下的解卷积能力。在GC-MS（运行时间为63分钟和14分钟）和GC-VUV（运行时间为22分钟、11分钟和7分钟）上分别运行了标准萜烯混合物和茶树精油。三种GC-VUV方法对10种萜烯以及63分钟的GC-MS方法都显示出良好的精密度。14分钟的GC-MS方法在精确量化某些萜烯方面存在困难。GC-VUV在提供相同水平定量准确性的同时，允许更短的运行时间。
