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    • 3. 发明申请
    • A METHOD OF AND APPARATUS FOR IONIZING AN ANALYTE AND ION SOURCE PROBE FOR USE THEREWITH
    • 用于分离分析仪的离子源和离子源探针的方法和装置
    • WO2002082073A2
    • 2002-10-17
    • PCT/CA2002/000491
    • 2002-04-09
    • MDS INC., doing business as MDS SCIEXCOVEY, ThomasJONG, RaymondJAVAHERI, Hassan
    • COVEY, ThomasJONG, RaymondJAVAHERI, Hassan
    • G01N30/72
    • H01J49/04G01N30/724G01N30/7246G01N30/7266H01J49/107
    • Ions for analysis are formed from a liquid sample comprising an analyte in a solvent liquid by directing the liquid sample through a capillary tube having a free end so as to form a first flow comprising a spray of droplets of the liquid sample, to promote vaporization of the solvent liquid. An orifice member is spaced from the free-end of the capillary tube and has an orifice therein. An electric field is generated between the free-end of the capillary and the orifice member, thereby causing the droplets to be charged, and the first flow is directed in a first direction along the axis of the capillary tube. Two gas sources, or an arc jet of gas, provide second and third flows, of a gas, and include heaters for heating the second and third flows. The second and third flows intersect with the first flow at a selected mixing region, to promote turbulent mixing of the first, second and third flows, the first, second and third directions being different from one another, and each of the second and third directions being selected to provide each of the second and third flows with a velocity component in the first direction and a velocity component towards the axis of the capillary tube, thereby to promote entrainment of the heated gas in the spray, with the heated gas acting to assist the evaporation of the droplets to release ions therefrom. At least some of the ions produced from the droplets are drawn through the orifice for analysis.
    • 用于电喷雾离子化的装置包括两个气源或气体的电弧射流,提供气体的第二和第三流,并且包括用于加热第二和第三流量的加热器。 第二和第三流在选定的混合区域与第一流相交,以促进第一,第二和第三流的湍流混合,第一,第二和第三方向彼此不同,第二和第三方向 被选择为使第二和第三流中的每一个具有在第一方向上的速度分量和朝向毛细管的轴线的速度分量,从而促进加热的气体在喷雾中的夹带,加热的气体用于辅助 液滴的蒸发从其中释放离子。 从液滴产生的至少一些离子被吸入孔中进行分析。
    • 5. 发明申请
    • TORCH FOR INDUCTIVELY COUPLED PLASMA SPECTROMETRY
    • 感应耦合等离子体光谱仪
    • WO1997022233A1
    • 1997-06-19
    • PCT/CA1996000823
    • 1996-12-10
    • MDS HEALTH GROUP LIMITEDFRENCH, John, BarryJONG, RaymondETKIN, Bernard
    • MDS HEALTH GROUP LIMITED
    • H05H01/30
    • H05H1/30H05H2001/3468H05H2001/3478
    • A torch for Inductively Coupled Plasma Spectrometry (ICPS) is formed from quartz and has inner and outer tubes defining an annular channel. The end of the inner tube is within an end portion of the outer tube, to define a chamber for a plasma ball. An inlet for a main gas flow opens tangentially into the annular channel. The annular channel is configured so as to maximize the swirl component of this flow. To this end, a connection to the inlet is provided with an annular toroidal shape, having a cross section to or larger than the inlet. Further, the inlet is mounted relatively close to the end of the inner tube, so as to minimise decay of the swirl component as the gas flows along the annular channel, the length of the annular channel being sufficient to ensure that the flow leaving the annular channel is uniform and has a uniform swirl component. This arrangement enables a significantly reduced consumption of gas to generate a plasma ball, and can give improved performance, in terms of a higher detection rate in a spectrometer.
    • 电感耦合等离子体光谱仪(ICPS)的手电筒由石英形成,并具有限定环形通道的内外管。 内管的端部在外管的端部内,以限定用于等离子体球的腔室。 主气流的入口切向进入环形通道。 环形通道被配置为使该流动的漩涡分量最大化。 为此,与入口的连接设置有环形环形,具有大于或大于入口的横截面。 此外,入口相对靠近内管的端部安装,以便随着气体沿着环形通道流动而最小化漩涡部件的衰减,环形通道的长度足以确保离开环形管 通道均匀,具有均匀的涡流分量。 这种布置能够显着降低气体的消耗以产生等离子体球,并且可以在光谱仪中以更高的检测率提供改进的性能。