| 摘要 |
The present invention belongs to the technical field of ion mobility detection application, and relates to a pre-concentration device and method for an ion mobility detection apparatus. According to an aspect of this invention, there is provided a pre-concentration device for an ion mobility detection apparatus, comprising: a collecting passage configured to collect a gas mixture including substances to be detected; a sieve provided, in a deploy state, within the collecting passage and configured to separate the substances to be detected from the gas mixture, the separated substances to be detected being absorbed to the sieve; at least one desorption unit configured to desorb the substances to be detected that have been absorbed to the sieve, the sieve being received in a wound state in the desorption unit; and a driving device configured to drive movement of the sieve between an absorption position in which the substances to be detected are absorbed to the sieve in the collecting passage, and a desorption position in which the substances to be detected are desorbed from the sieve in the at least one desorption unit. |
