应用报告-思聚仪器仪表（上海）有限公司

疾病VOCs 标记物筛查-基于TD-GCxGC-TOFMS呼吸活检分析技术该研究是介绍了一套分析系统用于快速鉴定呼吸气中挥发性有机物（VOCs），用于一些疾病的标记物快速筛查。该系统是基于热脱附吸附管采集呼吸气，经热脱附全自动预浓缩进样，最后经气相色谱 -飞行时间质谱（GC –TOF MS）分析目标物。该系统具有无创易操作的采样过程，经冷阱浓缩和飞行时间质谱分析，具有灵敏度高，软件操作流程清晰明了，可自动对样品进行差异度比较。
热脱附- 气相色谱法连续在线监测空气中有害污染物本应用案例展示了 TT24-7 热脱附仪 ( 热解析仪 ) 如何应用于连续在线监测空气中的有害污染物，以及所得到的随时间变化的浓度数据对排放源分析的贡献。
Centri 262 Comprehensive VOC profiling of meat using dynamic headspace and automated TD–GC–MS analysis This study shows that data acquired using the Centri® automated multi-mode sampling and preconcentration system for gas chromatography–mass spectrometry (GC–MS) can be used to generate useful insights into the aroma profiles of foods. In the example investigated, the dynamic headspace profiles of two cuts of lean steak were sampled at elevated temperature onto sorbent tubes, with subsequent preconcentration on Centri. Over 140 VOCs and SVOCs from a variety of chemical classes were identified, with the detection of a range of sulfur species demonstrating the inertness of the Centri flowpath and the use of optimised sorbent tubes and desorption conditions.
Centri 261 Enhanced aroma profiling of vodka using automated immersive high-capacity sorptive extraction with GC–MS This study shows the advantages of immersive sorptive extraction, using high-capacity HiSorb probes, for the gas chromatography–mass spectrometry (GC–MS) analysis of a wide range of aroma compounds in vodka. Key benefits include full automation on the Centri multi-mode sampling and concentration system, re-collection for repeat analysis of a single sample under different conditions, and selective purging of ethanol.
Centri 259 Improving the performance of headspace sampling using trap-based preconcentration This study shows how large-volume and splitless injections can be used to improve the sensitivity of headspace sampling without compromising chromatography, as well as simplifying method development.
Centri 258 Enhancing laboratory throughput using fully automated high-capacity sorptive extraction This report describes how laboratory throughput for sampling of volatiles from liquid or solid matrices can be more than doubled, by using HiSorb high-capacity sorptive extraction on the Centri automated multi-mode sampling and preconcentration platform.
Centri 257 Improving the performance of SPME using trap-based preconcentration with enrichment This study shows that enhancing conventional SPME by using trap-based preconcentration, with enrichment by ‘sample stacking’, greatly improves the number of compounds identified, thus expanding the applicability of SPME in GC–MS analysis.

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