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    • 1. 发明申请
    • DETECTION APPARATUS
    • 检测装置
    • WO2008074986A1
    • 2008-06-26
    • PCT/GB2007/004711
    • 2007-12-10
    • SMITHS DETECTION-WATFORD LIMITEDTAYLOR, Stephen, John
    • TAYLOR, Stephen, John
    • G01N27/64
    • G01N33/0004G01N27/622Y10T436/24Y10T436/25875
    • IMS apparatus has a preconcentrator (7) outside its inlet aperture (6). Analyte vapour is adsorbed during a first phase when substantially no gas is admitted to the reaction region (3). The preconcentrator (7) is then energised to desorb the analyte molecules and create a volume of desorbed molecules outsde the IMS housing (1). Next, a pressure pulser (8) is energised momentarily to drop pressure in the housing (1) and draw in a small sip of the analyte molecules from the desorbed volume (9) through the aperture (6). This is repeated until the concentration of analyte molecules in the desorbed volume (9) is too low for accurate analysis, following which the apparatus enters another adsorption phase.
    • IMS设备在其入口孔(6)的外部具有预浓缩器(7)。 当基本上没有气体进入反应区域(3)时,分析物蒸汽在第一阶段被吸附。 然后将预浓缩器(7)通电以解吸分析物分子,并产生一定量的解吸分子到IMS壳体外(1)。 接下来,压力脉冲发生器(8)被瞬间通电以降低壳体(1)中的压力,并且通过孔(6)从被解吸的体积(9)中吸取小量的分析物分子。 重复这一操作,直到解吸体积(9)中分析物分子的浓度太低以用于精确分析,随后装置进入另一吸附阶段。
    • 3. 发明申请
    • GAS PRE-CONCENTRATOR FOR DETECTION APPARATUS
    • 用于检测装置的气体预浓缩器
    • WO2008074981A1
    • 2008-06-26
    • PCT/GB2007/004702
    • 2007-12-10
    • SMITHS DETECTION-WATFORD LIMITEDTAYLOR, Stephen, John
    • TAYLOR, Stephen, John
    • G01N1/22G01N1/40G01N27/64
    • G01N27/622G01N1/405
    • IMS apparatus has a pre-concentrator (9) in its inlet (7). A pressure pulser (8) connected to the interior of the housing (1) applies small alternating negative and positive pressure pulses to the housing so that air is drawn in and out of the inlet (7) in a panting fashion. This causes analyte to be adsorbed by the pre-concentrator (9) but does not allow analyte to enter sufficiently to be ionized and detected. After a time sufficient to accumulate a detectable amount of analyte on the pre-concentrator (9) the apparatus switches to a desorb phase. The pre-concentrator (9) is heated to desorb the analyte and the pulser (8) produces a larger negative pulse sufficient to draw the liberated analyte far enough into the reaction region (3) for ionization and detection.
    • IMS设备在其入口(7)中具有预浓缩器(9)。 连接到壳体(1)的内部的压力脉动器(8)将小的交替的负压和正压脉冲施加到壳体,使得空气以气喘吁吁的方式被吸入进出口(7)。 这使得分析物被预浓缩器(9)吸附,但不允许分析物充分进入以被电离和检测。 在足以在预浓缩器(9)上积聚可检测量的分析物的时间之后,装置切换到解吸相。 预浓缩器(9)被加热以解吸分析物,并且脉冲发生器(8)产生更大的负脉冲,足以将释放的分析物足够吸引到反应区域(3)中用于电离和检测。
    • 8. 发明申请
    • DETECTION APPARATUS
    • 检测设备
    • WO2009069000A2
    • 2009-06-04
    • PCT/IB2008/003801
    • 2008-12-01
    • SMITHS DETECTION - WATFORD LIMITEDTAYLOR, Stephen, JohnTURNER, Robert, Brian
    • TAYLOR, Stephen, JohnTURNER, Robert, Brian
    • G01N27/64B81B3/00G01N1/40
    • H01J49/10G01N1/40G01N27/622G01N2001/022
    • A detection system comprises a housing having a sample inlet and a gas outlet, and a preconcentrator. The preconcentrator can include a microelectromechanical system (MEMS) configured to accumulate or release a dopant at selected times, and can be located inside or outside the housing. The detection system can include an ion mobility spectrometer, a mass spectrometer, or a combination thereof. A method of analyzing a substance comprises supplying a sample gas or vapor comprising the substance, accumulating a dopant in a first presconcentrator, releasing the dopant at selected times from the preconcentrator to an area containing the sample, ionizing the substance to generate detectable species, separating the detectable species, and determining the detectable species by a detection unit. The system and method allow the rapid introduction and removal of dopant to facilitate fast and accurate identification of the sample.
    • 检测系统包括具有样品入口和气体出口的外壳以及预浓缩器。 预浓缩器可以包括被配置为在选定的时间累积或释放掺杂剂的微机电系统(MEMS),并且可以位于壳体内部或外部。 检测系统可以包括离子迁移谱仪,质谱仪或其组合。 分析物质的方法包括提供包含该物质的样品气体或蒸气,在第一预浓缩器中积聚掺杂剂,在预选器中将掺杂剂从预浓缩器释放到含有样品的区域,电离物质以产生可检测物质,分离 可检测物质,并通过检测单元确定可检测物质。 该系统和方法允许快速引入和去除掺杂剂以促进样品的快速和准确识别。