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    • 7. 发明公开
    • TRACE DETECTION DEVICE AND ANALYSIS METHOD THEREFOR
    • 微量检测装置及其分析方法
    • EP2423663A1
    • 2012-02-29
    • EP09845115.6
    • 2009-12-30
    • Nuctech Company Limited
    • PENG, HuaLIN, JinHE, WenZHANG, YangtianWANG, YaoxinJIAO, PengLI, HuiZHANG, Zhongxia
    • G01N1/40G01N27/62
    • G01N27/62G01N1/2202G01N1/40
    • A trace detector is disclosed. The trace detector comprises: a desorption chamber defining a desorption region, and the desorption chamber has a housing. The housing has a sample feeding port for introducing a substance to be detected into the desorption chamber and a gas discharge port for discharging gas entraining the sample from the desorption chamber. A controller is used for controlling the trace detector in such a manner that the sample feeding port and the gas discharge port are in fluid communication with the desorption chamber during pre-concentration process of the trace detector, thereby continuously feeding and collecting the sample. With the above manner, data collecting, processing and analyzing processes may be performed by the trace detector throughout the sample feeding process and the gas pre-concentrating process. The trace detector has an excellent detecting period of time whether the substance to be detected in the gas is in a high concentration state or a low concentration state, and the trace detector can perform continuous sampling for a long time, thereby improving a ratio of the amount of trapped substance to the amount of the substance entrained in the gas to be detected and the amount of the cumulated trapped substance, decreasing the probability of failing to detect the substance, and increasing detection sensitivity. In addition, the detection efficiency of the detector is increased during the gas pre-concentration process.
    • 公开了一种痕迹检测器。 痕迹检测器包括:限定解吸区域的解吸腔室,解吸腔室具有壳体。 壳体具有用于将待检测物质引入解吸室的样品进料口和用于排出从解吸室引出样品的气体的气体排出口。 控制器用于控制微量检测器,使得微量检测器的预浓缩过程中,样品进料口和排气口与解吸室流体连通,从而连续进料和收集样品。 采用上述方式,可以在样品进料过程和气体预浓缩过程中由痕量检测器执行数据收集,处理和分析过程。 无论气体中待检测物质处于高浓度状态还是低浓度状态,痕迹检测器都具有良好的检测时间段,并且痕迹检测器可以长时间连续采样,从而提高 被捕获物质的量与待检测气体中夹带的物质的量和累积捕获物质的量,减少检测不到该物质的可能性以及增加检测灵敏度。 另外,在气体预浓缩过程中检测器的检测效率增加。
    • 8. 发明公开
    • ION MOBILITY SPECTROMETER AND METHOD FOR IMPROVING THE DETECTION SENSITIVITY THEREOF
    • IONENMOBILITÄTSSPEKTROMETERUND VERFAHREN ZURERHÖHUNGVON DESSEN ERKENNUNGSEMPFINDLICHKEIT
    • EP2503329A1
    • 2012-09-26
    • EP10831023.6
    • 2010-07-30
    • Nuctech Company Limited
    • PENG, HuaZHANG, ZhongxiaWANG, Yaoxin
    • G01N27/64G01N27/68H01J49/00
    • G01N27/622G01N33/0057Y10T436/163333Y10T436/182Y10T436/21Y10T436/24
    • The present invention relates to a method of improving detection sensitivity of an ion mobility spectrometer, comprising: inserting a sample into a sample receiving device of the ion mobility spectrometer; triggering an operation of spectra acquisition through an optocoupler; when the number of the acquired spectra reaches the level required to contain enough information for accurate detection of explosives with relatively high vapor pressure, adding a dopant instantly to the ionization region by controlling the ON/OFF-state of an electromagnetic valve; when the number of the acquired spectra reaches the level required to contain enough information for accurate detection of explosives with relatively low vapor pressure, stopping the acquisition operation, and turning off the electromagnetic valve so as to stop adding the dopant to the ionization region; analyzing all of the acquired spectra to obtain the detection result. The addition time of the dopant is controlled such that the dopant can take effect on the detection of some explosives with relatively low vapor pressure while the explosives which can be detected with higher sensitivity when no dopant is added can be analyzed in the case that the dopant concentration is very low, thereby achieving the optimal detection performance of the apparatus by taking account of its response to various explosives.
    • 本发明涉及一种改善离子迁移谱仪检测灵敏度的方法,包括:将样品插入到离子迁移谱仪的样品接收装置中; 触发通过光耦合器进行光谱采集的操作; 当获取的光谱数量达到含有足够的信息以准确检测具有较高蒸气压的爆炸物所需的水平时,通过控制电磁阀的ON / OFF状态将掺杂剂立即添加到电离区域; 当获取的光谱数量达到包含足够的信息以准确检测相对低的蒸气压的爆炸物所需的水平时,停止采集操作,并关闭电磁阀,以便停止向电离区域添加掺杂剂; 分析所有获取的光谱以获得检测结果。 控制掺杂剂的添加时间使得掺杂剂可以对具有相对低的蒸汽压力的一些爆炸物的检测起作用,而当不添加掺杂剂时可以以更高的灵敏度检测的爆炸物可以被分析,在掺杂剂 浓度非常低,从而通过考虑其对各种炸药的响应来实现装置的最佳检测性能。
    • 9. 发明公开
    • SAMPLE INTRODUCING DEVICE FOR ION MOBILITY SPECTROMETER, METHOD USING IT AND ION MOBILITY SPECTROMETER
    • 进样装置:用于离子迁移谱仪,离子迁移谱仪,用途和方法
    • EP2492677A1
    • 2012-08-29
    • EP11726316.0
    • 2011-05-04
    • Nuctech Company Limited
    • CHEN, ZhiqiangLI, YuanjingPENG, HuaZHANG, ZhongxiaXUE, XinWANG, YaoxinLIN, JinYANG, Xiaohui
    • G01N27/64
    • G01N27/622
    • The present invention discloses a sampling device for an ion migration spectrometer (IMS), comprising: an inner sleeve part, inside of which an inner cavity is defined, one end of the inner sleeve part is connected with an inlet of an migration pipe via an inner-layer channel, and the other end of the inner sleeve part is configured with an inner end cap having an inner opening; and an outer sleeve part, which is configured as an eccentric sleeve that is coaxial with the inner sleeve part and able to rotate with respect to the inner sleeve part, so as to form a sleeve cavity between the inner sleeve part and the outer sleeve part, wherein one end of the outer sleeve part is configured with at least one connecting opening that is selectively connected with the inner-layer channel, and the other end of the outer sleeve part is configured with an outer end cap, on which a first outer opening selectively connected with the inner opening and a second outer opening selectively connected with the sleeve cavity are configured, wherein the outer end cap is configured to be able to rotate between a first location and a second location with respect to the inner end cap, so as to selectively introduce a sample to be detected into the inner-layer channel via one of the inner cavity and the sleeve cavity. Moreover, the present invention further relates to a method for solid and gas sampling by using the above sampling device.
    • 本发明光盘的离子迁移谱仪(IMS)松一取样装置,其包括:在内部空腔的内套筒部分,其内部被定义,内套筒部的一端与在经由在迁移管的入口连接 内层通道,和内套筒部的另一端与在内部端罩在内部开口具有被配置; 和外部套筒部件,在所有以偏心套筒那样,其被配置为与内套筒部同轴,并能够相对于所述内套筒部件转动,从而形成所述内套筒部件和外部套筒部分之间的腔套 ,worin外套筒部的一端与至少一个连接孔并选择性地与内层通道连接,所述外部套筒部件的另一端配置为在外部终端盖被配置为与在其上的第一外 与内开口并与腔套选择性地连接的第二外部开口选择性地连接开口被配置为,worin外端帽被构造成能够相对于第一位置和第二位置之间旋转,以所述内端盖使得 以选择性地引入样品以经由所述内腔中的一个与套筒空腔被检测到内层通道。 更完了,本发明还通过使用上述取样装置涉及一种用于固体和气体取样的方法。
    • 10. 发明公开
    • DOPING GAS GENERATOR
    • DOTIERUNGSGASGENERATOR
    • EP2450938A1
    • 2012-05-09
    • EP09846724.4
    • 2009-12-30
    • Nuctech Company Limited
    • ZHANG, ZhongxiaLI, HuiZHANG, YangtianLIN, JinLIU, Jianhua
    • H01J49/00
    • G01N27/622Y10T137/3112Y10T137/4891Y10T137/6606Y10T137/87346Y10T137/87571
    • The present invention relates to a dopant gas generating device for supplying the dopant gas to the ion mobility spectrometry instrument, comprising: a doping container; an air inlet having an inlet end connecting with an upstream side of a carrier gas passage and an outlet end connecting with the doping container; an air outlet having an entrance end connecting with the doping container and an exit end connecting with an downstream side of the carrier gas passage; a dopant gas generating unit for releasing the dopant gas, wherein the dopant gas generating unit is disposed within the doping container. Through disposing the dopant gas generating unit, which is used for releasing the dopant gas, within the doping container, the dopant gas in the present invention is applicable with not only a solid state dopant, but also a liquid dopant.
    • 本发明涉及一种用于将掺杂气体供给到离子迁移率光谱仪器的掺杂剂气体发生装置,包括:掺杂容器; 空气入口,其具有与载气通道的上游侧连接的入口端和与所述掺杂容器连接的出口端; 具有与所述掺杂容器连接的入口端的出气口和与所述载气通道的下游侧连接的出口端; 用于释放掺杂气体的掺杂剂气体发生单元,其中所述掺杂剂气体发生单元设置在所述掺杂容器内。 通过在掺杂容器内设置用于释放掺杂气体的掺杂剂气体发生单元,本发明中的掺杂剂气体不仅可以应用于固态掺杂剂,而且也可应用于液体掺杂剂。