公开(公告)号：US06610125B2

公开(公告)日：2003-08-26

申请号：US10001664

申请日：2001-10-23

申请人： Carl P. Tripp ,  Sofian M. Kanan

发明人： Carl P. Tripp ,  Sofian M. Kanan

IPC分类号： B01D5304

CPC分类号： G01N1/405 ,  B01D53/04 ,  B01D2253/106 ,  B01D2253/112 ,  B01D2259/40088 ,  G01N1/22 ,  G01N1/40 ,  G01N30/02 ,  B01D15/422

摘要： Methods of increasing the relative concentration of a target molecule in a gas stream, so that it can be more easily detected by a semiconducting metal oxide based sensor. A gas stream is passed through an adsorbent, the stream containing molecules of the target molecule in a mixture containing molecules of at least one non-target molecule. Both the target and non-target molecules are adsorbed on the adsorbent. Another gas stream containing molecules of a chemical displacer is passed through the adsorbent, the molecules of the chemical displacer adsorbing on the adsorbent to selectively displace the target molecules from the adsorbent while leaving the non-target molecules adsorbed. The chemical displacement causes the displaced target molecules to enter the gas stream. The gas stream can then be passed through a semiconducting metal oxide based sensor to detect the target molecules.

摘要翻译： 增加气流中靶分子的相对浓度的方法，以便可以通过基于半导体金属氧化物的传感器更容易地检测。 气流通过吸附剂，该流在含有至少一个非靶分子的分子的混合物中含有靶分子的分子。 目标和非目标分子都吸附在吸附剂上。 含有化学置换剂分子的另一气流通过吸附剂，吸附在吸附剂上的化学置换剂的分子选择性地将吸附剂上的目标分子置换，同时吸附非目标分子。 化学位移导致位移的目标分子进入气流。 然后可以将气流通过基于半导体金属氧化物的传感器以检测目标分子。