The application of two total transfer valve modulators for comprehensive two-dimensional gas chromatography of volatile organic compounds.
The application of two total transfer valve modulators for comprehensive two-dimensional gas chromatography of volatile organic compounds.
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两个总传递阀调节器在挥发性有机化合物二维气相色谱分析中的应用
DOI：
10.1002/jssc.201000710
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发表时间：
2011
影响因子：
3.1
通讯作者：
Lidster RT
中科院分区：
文献类型：
--
作者：
Lidster RT
旋转和隔膜6通2位阀已被评估为综合GC的调节器。使用总转移方法，使得来自第一柱的所有分析物材料传递到第二分离柱。该转移方法使用重复的短时间停止流动，但保留了良好的主柱性能，因为主载体流部分地保持为沿第一柱的长度沿着平衡的压力。高分辨率的分离复杂的样品，如汽油和精油实现了与热调制火焰离子化检测（FID）的性能相当（在第二柱分辨率方面）。测试的阀调制器可以胜过用于非常高挥发性有机物质的热调制器，因为调制过程对分析物蒸气压不敏感。测试的隔膜阀表现出最佳性能，并与热解吸系统结合，以提供空气中挥发性有机化合物（VOC）的高灵敏度分离，对于1 L空气样品，单个VOC的LOD为2-4 pptV。
Rotary and diaphragm 6‐port 2‐position valves have been evaluated as modulators for comprehensive GC. A total transfer methodology was used such that all analyte materials from the primary column were passed to the second separating column. The transfer methodology used repeated short periods of stop flow, but retained good primary column performance since primary carrier flow was partially maintained as pressure equilibrated along the length of the first column. Highly resolved separations of complex samples such as petrol and essential oils were achieved with equivalent performance (in terms of second column resolution) to thermal modulation with flame ionisation detection (FID). The valve modulators tested could outperform thermal modulators for very highly volatile organic species since the modulation process was insensitive to analyte vapour pressure. The diaphragm valve tested showed the best performance and was incorporated with a thermal desorption system to provide a high sensitivity separation of volatile organic compounds (VOCs) in air with LODs for individual VOCs of 2–4 pptV for a 1‐L air sample.
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全转移、基于阀门的综合二维气相色谱法
影响因子：
6.2
作者：
Rachel E. Mohler;B. Prazen;R. Synovec
通讯作者：
R. Synovec
综合二维气相色谱-飞行时间质谱法测定烟草中农药的评价。
DOI：
10.1016/j.chroma.2008.01.043
发表时间：
2008
期刊：
Journal of chromatography. A
影响因子：
--
作者：
J. Cochran
通讯作者：
J. Cochran
使用阀门调制的综合气相色谱中的峰值幅度和分辨率
影响因子：
5.4
作者：
J. Hamilton;A. Lewis;K. Bartle
通讯作者：
K. Bartle
影响因子：
4.1
作者：
Poliak, Marina;Kochman, Maya;Amirav, Aviv
通讯作者：
Amirav, Aviv
影响因子：
7.4
作者：
Seeley, JV;Kramp, F;Hicks, CJ
通讯作者：
Hicks, CJ