Mass spectrometric apparatus and ion source
    4.
    发明授权
    Mass spectrometric apparatus and ion source 有权
    质谱仪和离子源

    公开(公告)号:US07164124B2

    公开(公告)日:2007-01-16

    申请号:US11009485

    申请日:2004-12-13

    IPC分类号: H01J49/10

    摘要: A mass spectrometric apparatus capable of generating and detecting positive and negative ions stably at the same time. The apparatus preferably comprises: an opening through which a sample gas is introduced; an ion source to generate ions of the sample gas; and a mass spectrometer to analyze the mass of the generated ions. The ion source utilized with the mass spectrometric device comprises: a first needle electrode on which a voltage is applied in order to generate positive ions of the sample gas introduced through the opening; a first counter electrode having a first opening through which the sample gas and the positive ions pass; a second counter electrode disposed opposite the first counter electrode having a second opening through which the sample gas and the positive ions pass; a second needle electrode on which voltage is applied in order to generate negative ions of the sample gas; and a vent through which the sample gas is ejected. Generated ions are then introduced into a vacuum region via an aperture and subjected to mass analysis.

    摘要翻译: 能够同时稳定地产生和检测正离子和负离子的质谱仪。 该装置优选地包括:开口,样品气体通过该开口被引入; 用于产生样品气体的离子的离子源; 和用于分析所产生的离子质量的质谱仪。 与质谱仪一起使用的离子源包括:第一针电极,其上施加电压以产生通过开口引入的样品气体的正离子; 第一对电极,其具有第一开口,样品气体和正离子通过该第一开口; 与第一对置电极相对配置的第二对置电极,具有第二开口,样品气体和正离子通过该第二开口; 第二针电极,其上施加电压以产生样品气体的负离子; 以及排出样品气体的排气口。 然后将产生的离子经由孔引入真空区域并进行质量分析。

    Apparatus for detecting chemical substances and method therefor
    6.
    发明申请
    Apparatus for detecting chemical substances and method therefor 有权
    用于检测化学物质的装置及其方法

    公开(公告)号:US20060108522A1

    公开(公告)日:2006-05-25

    申请号:US11324231

    申请日:2006-01-04

    IPC分类号: H01J49/00

    摘要: An apparatus for detecting chemical substances which is high in sensitivity and selectivity is provided. An organic acid or an organic acid salt is used to generate an organic acid gas from an organic acid gas generator 3 to be mixed with a sample gas for introduction into an ion source 4 for ionization, thereby obtaining a mass spectrum by a mass analysis region 5. A data processor 6 determines the detection or non-detection of a specific m/z of an organic acid adduct ion obtained by adding a molecule generated from the organic acid to a molecule with specific m/z generated from a target chemical substance to be detected based on the obtained mass spectrum. When there is an ion peak with the m/z of the organic acid adduct ion, the presence of the target chemical substance to be detected is determined, and an alarm is sounded. False detection can be prevented.

    摘要翻译: 提供一种用于检测灵敏度和选择性高的化学物质的装置。 使用有机酸或有机酸盐从有机酸气体发生器3产生有机酸性气体,与用于引入离子源4的样品气体混合,从而通过质量分析区域获得质谱 5。 数据处理器6确定通过将由有机酸产生的分子加入到由待检测的目标化学物质产生的具有特定m / z的分子而获得的有机酸加合物的特定m / z的检测或非检测 基于获得的质谱。 当存在有机酸加合离子的m / z的离子峰时,确定要检测的目标化学物质的存在,并发出报警。 可以防止误检。

    APPARATUS AND METHOD FOR DETECTING CHEMICAL AGENTS
    8.
    发明申请
    APPARATUS AND METHOD FOR DETECTING CHEMICAL AGENTS 有权
    检测化学试剂的装置和方法

    公开(公告)号:US20050092915A1

    公开(公告)日:2005-05-05

    申请号:US10644806

    申请日:2003-08-21

    摘要: An object of the present invention is to obtain an apparatus and a method for the detection of chemical agents which are suitable for detecting sulfur mustard and lewisite 1 and are satisfactory from the viewpoint of the speed of detection of chemical agents, the reduction of the rate of wrong information, the specification of the kinds of the chemical agents, and an unmanned continuous-monitoring apparatus. In the present invention, the detecting apparatus comprises a sample introduction section 1 into which a sample is introduced to be heated, an ionization section 2 in which the sample from the sample introduction section is ionized, a mass spectrometry section 3, and a computer 6 for data analysis. When predetermined signals characteristic of sulfur mustard or lewisite 1 are observed, it becomes possible to specify the sample.

    摘要翻译: 本发明的目的是获得一种适用于检测硫芥和虱子1的化学试剂的检测装置和方法,从化学试剂的检测速度,速率的降低的观点来看是令人满意的 错误信息,化学剂种类的规格,以及无人值守的连续监测装置。 在本发明中,检测装置包括:试样导入部1,其中导入待加热的试样,将来自试样导入部的试样离子化的电离部2,质谱分析部3和计算机6 用于数据分析。 当观察到硫芥子或虱子1的特征的预定信号时,可以指定样品。

    Explosive detection system
    9.
    发明授权
    Explosive detection system 有权
    爆炸检测系统

    公开(公告)号:US06844546B2

    公开(公告)日:2005-01-18

    申请号:US10229057

    申请日:2002-08-28

    CPC分类号: H01J49/0031

    摘要: An explosive detection system including a sample injection region, an ion source region for generating ions of a sample injected by the ion injection region, a mass analysis region for analyzing mass of the ions, a heater for heating the sample injection region and the ion source region, a plurality of pumps for exhausting a chamber in which the mass analysis region is disposed, and a controller for controlling the regions and the plurality of pumps. The controller conducts control so as to heat the sample injection region and the ion source region with the heaters, then reduce heating electric power supplied to the heaters in order to prevent a predetermined electric power value from being exceeded, and drive the plurality of pumps successively to exhaust the chamber.

    摘要翻译: 一种爆炸检测系统,包括样品注入区域,用于产生由离子注入区域注入的样品的离子的离子源区域,用于分析离子质量的质量分析区域,用于加热样品注入区域的加热器和离子源 区域,用于排出其中设置质量分析区域的室的多个泵,以及用于控制区域和多个泵的控制器。 控制器进行控制,以便利用加热器加热样品注入区域和离子源区域,然后减少供给到加热器的加热电力,以防止超过预定的电功率值,并且依次驱动多个泵 排气室。