Passive sampling and gas chromatographic determination of low concentrations of reactive hydrocarbons in ambient air with reduction gas detector
Passive sampling and gas chromatographic determination of low concentrations of reactive hydrocarbons in ambient air with reduction gas detector
复制标题
使用还原气体检测器被动采样和气相色谱法测定环境空气中低浓度的活性碳氢化合物
DOI：
10.1016/0021-9673(93)83302-9
复制
发表时间：
1993
影响因子：
4.1
通讯作者：
C. Hewitt
中科院分区：
文献类型：
--
作者：
Xu;C. Hewitt
本文介绍了氧化汞还原气体检测器（RGD）被动采样和毛细管气相色谱法测定环境空气中低浓度挥发性有机化合物（VOCs 6）的方法。由于RGD的高灵敏度，与使用火焰离子化检测器所需的采样时间相比，采样时间显著减少。对于Tenax-TA、Tenax-GR、Carbotrap和Chromosorb 106，还研究了储存期间聚合物取样基质上伪影积聚引起的RGD信号。Tenax-TA和GR的问题最小，Carbotrap的问题更严重，Chromosorb 106的问题如此严重，以至于无法将该材料用于该应用。
The use of mercuric oxide reduction gas detection (RGD) for the passive sampling and capillary gas chromatographic determination of low concentrations of volatile organic compounds (⩽C6) in ambient air is described. Sampling times are significantly reduced, compared with those required by the use of a flame ionization detector, due to the high sensitivity of RGD. The RGD signal due to the build-up of artifacts on polymeric sampling matrices during storage has also been investigated for Tenax-TA, Tenax-GR, Carbotrap and Chromosorb 106. The problem is at a minimum with Tenax-TA and GR, is more acute with Carbotrap, and is so severe with Chromosorb 106 that it prevents the use of this material for this application.