推荐 为解决传统gc - ms在复杂基质中难以有效分离异构体和微量成分的问题，研究人员以武夷岩茶（水仙）为对象，开展烘焙过程中挥发性成分动态变化研究。采用gc - ims和gc×gc - o - ms结合机器学习，鉴定出多种关键差异化合物，为茶叶加工和质量控制提供理论支持。

本研究针对东方甜瓜香气活性物质鉴定技术不足的问题，采用hs-spme结合gc?×?gc-o-tof-ms和gc-ms技术，结合aeda、香气重组与缺失实验，系统分析long4（果香型）和zhcg（青瓜香型）的挥发性成分差异。研究发现124种挥发性物质中32种具有香气活性，其中8种酯类物质主导long4的果香特征，7种醛醇类物质决定 ...

Agilent J&W HP-5ms has very low bleed characteristics that are ideal for GC/MS. The column has excellent inertness for active compounds, including acidic and basic compounds, and improved signal ...

Agilent 7890B GC is a dynamic partner for the 5977B MSD, with its efficient protocols and fully synchronized MS operation. MassHunter Software puts you in control – and makes your GC/MSD ...

New GC/GC-MS instrument portfolio, including Thermo Scientific TRACE 1600 Series Gas Chromatograph, Thermo Scientific AI/AS 1610 Liquid Autosampler, Thermo Scientific ISQ 7610 Single Quadrupole GC ...

GC/MS is commonly applied to volatile and semi-volatile compounds, said Terry Sheehan, Agilent’s director of marketing for GC/MS products. Use of tech Semi-volatiles include hundreds of pesticides and ...

The Agilent 7000E triple quadrupole GC/MS provides unequivocal intelligence and robustness to deliver the answers you seek. The routine workhorse for labs across a wide range of industry applications ...

Analysts interested in quantifying volatile organic compounds or pesticides in liquid samples should consider using the gas chromatography - mass spectroscopy (GC-MS) system. The gas chromatography ...

The Agilent 7890B is a state-of-art gas chromatograph (GC) that provides superior performance for all GC applications with the use of advanced electronic pneumatic control (EPC) modules and high ...

Lab & facilities. The Organic Geochemistry Laboratory (OG Lab) at CU Boulder is a shared analytical facility for multidisciplinary and collaborative research in fields as diverse as biogeochemistry, ...

To remain in compliance with EPA regulations, many labs are considering the more complex D5769 GC/MS method for total aromatics analysis. This presentation will offer best practices for setting up, ...