Electromagnet for an atomic absorption spectrometer
    1.
    发明授权
    Electromagnet for an atomic absorption spectrometer 失效
    用于原子吸收光谱仪的电磁体

    公开(公告)号:US5015093A

    公开(公告)日:1991-05-14

    申请号:US435431

    申请日:1989-11-07

    申请人: Klaus P. Rogasch

    发明人: Klaus P. Rogasch

    摘要: A solenoid serves for generating a magnetic field at the location of a sample which is to be atomized in an atomic absorption spectrometer. A shift of the absorption lines of the atoms in a sample relatively to the emission lines in a measuring light beam (18) passed through the atomized sample is effected by the magnetic field due to the Zeeman effect. The solenoid (44) comprises a pair of pole pieces (46, 48) between which an air gap is formed. An atomizing device atomizes the sample within this air gap. Field coils generate a magnetic flux through the pole pieces (46, 48), the air gap and a magnetic return path (76). The field coils (60, 62) are arranged on pole pieces (46, 48) close to the air gap. The windings of the field coils (60, 62) are formed by tubes (216) which are designed to permit passage of a cooling liquid therethrough.

    摘要翻译: 螺线管用于在原子吸收光谱仪中要被雾化的样品的位置处产生磁场。 相对于穿过雾化样品的测量光束(18)中的发射线,样品中的原子的吸收线的偏移由于塞曼效应而受到磁场的影响。 螺线管(44)包括一对极片(46,48),其间形成气隙。 雾化装置在该气隙内雾化样品。 励磁线圈通过极片(46,48),气隙和磁返回路径(76)产生磁通量。 励磁线圈(60,62)布置在靠近气隙的极片(46,48)上。 励磁线圈(60,62)的绕组由设计成允许冷却液体通过其中的管(216)形成。

    Burner assembly for atomic absorption spectrometer
    2.
    发明授权
    Burner assembly for atomic absorption spectrometer 失效
    用于原子吸收光谱仪的燃烧器组件

    公开(公告)号:US4776694A

    公开(公告)日:1988-10-11

    申请号:US932957

    申请日:1986-11-19

    IPC分类号: G01N21/72

    CPC分类号: G01N21/72

    摘要: A burner assembly for an atomic absorption spectrometer having carrier (20) fixed to the burner head (14) and mounting a flame sensor (96) and an ignition device (16) so as to permit a single alignment of the flame sensor (18) and the ignition device (16) relative to the burner head (14) and subsequent movement or adjustment of the burner relative to the housing without changing the mutual positions of the ignition device (16) and the flame sensor (18) and while the flame is burning.

    摘要翻译: 一种用于原子吸收光谱仪的燃烧器组件,其具有固定到燃烧器头部(14)并安装火焰传感器(96)和点火装置(16)的载体(20),以允许火焰传感器(18)的单一对准, 和点火装置(16)相对于燃烧器头部(14),随后相对于壳体移动或调节燃烧器,而不改变点火装置(16)和火焰传感器(18)的相互位置,同时火焰 正在燃烧

    Device for generating a magnetic field in an atomic absorption
spectrometer
    3.
    发明授权
    Device for generating a magnetic field in an atomic absorption spectrometer 失效
    用于在原子吸收光谱仪中产生磁场的装置

    公开(公告)号:US5585920A

    公开(公告)日:1996-12-17

    申请号:US445606

    申请日:1994-02-10

    摘要: An Atomic Absorption Spectrometer in which background absorption is compensated by means of a magnetic field causing a periodic line shift due to the Zeeman Effect, including a line emitting light source, an atomizing device, an optical system, by means of which the measuring light beam can be passed through an atom cloud of the atomizing device, an electromagnet, a converter circuit for converting the mains a.c. voltage into d.c. voltage applied to a capacitor, the winding of the electromagnet being located in the diagonal of a bridge circuit which is supplied with the d.c. voltage of the circuit and comprises a diode in diametrically opposite branches and a first and second controlled switch in the other two branches, the first one of the controlled switches being periodically maintained conductive by controls at the frequency of energizing and de-energizing the electromagnet, during an active time period encompassing the build-up and maintenance of the magnetic field, the first controlled switch being non-conductive during the remaining time, the second one of the controlled switches being controlled by means of a two-step current controller for regulating a predetermined current flowing through the winding of the electromagnet during the active time period of the first controlled switch, the second controlled switch likewise being non-conductive during the remaining time so that there results an essentially trapezoidal current waveform, and the winding of the electromagnet being connected in series with the diodes to the capacitor of the converter circuit in the non-conductive state of both of the controlled switches.

    摘要翻译: PCT No.PCT / EP89 / 00355 Sec。 371日期:1994年2月10日 102(e)日期1994年2月10日PCT提交1989年4月3日PCT公布。 WO89 / 10025 PCT出版物 日本1989年10月19日原子吸收光谱仪,其中背景吸收由于由于塞曼效应引起周期性线偏移的磁场而被补偿,包括线发射光源,雾化装置,光学系统,借助于 测量光束可以通过雾化装置的原子云,电磁体,转换器电路,用于转换电源ac 电压进入直流 施加到电容器的电压,电磁体的绕组位于提供有直流电的桥式电路的对角线中。 电路的电压并且包括在径向相反的分支中的二极管和在另外两个分支中的第一和第二受控开关,受控开关中的第一个受控开关周期性地通过控制在电磁体通电和断电的频率下保持导通, 在包括磁场积聚和维持的有效时间段期间,第一受控开关在剩余时间内不导通,第二个受控开关通过两步电流控制器进行控制,用于调节 在第一受控开关的有效时间段期间流过电磁体的绕组的预定电流,第二受控开关在剩余时间期间同样是非导通的,从而导致基本上梯形的电流波形,并且电磁铁的绕组 与二极管串联连接到转换器的电容器 在两个受控开关的非导通状态下。

    Atomic absorption spectrometer
    4.
    发明授权
    Atomic absorption spectrometer 失效
    原子吸收光谱仪

    公开(公告)号:US5094530A

    公开(公告)日:1992-03-10

    申请号:US435432

    申请日:1989-11-07

    IPC分类号: G01N21/31 G01N21/72 G01N21/74

    摘要: An atomic absorption spectrometer with electrothermal atomization of the sample and background compensation by use of Zeeman effect comprises a furnace (130) for the electrothermal atomization of the sample which furnace is heated transverse to the direction of propagation of the measuring light beam (18) of the atomic absorption spectrometer and a switchable solenoid (44) for generating a magnetic field at the location of the sample which magnetic field extends parallel to the direction of propagation of the measuring light beam (18) such that the longitudinal Zeeman effect is obtained with switching on the solenoid (44). The solenoid (44) has pole pieces (46,48) with aligned apertures (50,52) for the passage of the measuring light beam (18). A contact carrier (96) is arranged on the pole pieces (48,50) in which contact carrier contacts (128,176) are supported in order to hold the transversely heated furnace (130), the axes of said contacts being perpendicular to the axis of the measuring light beam (18). Field coils (60,62) are arranged directly on the pole pieces (46,48). The contact carrier (96) forms an integral element with the coil holder (56,58).

    摘要翻译: PCT No.PCT / EP89 / 00261 Sec。 371日期:1989年11月7日 102(e)1989年11月7日PCT PCT 1989年3月13日PCT公布。 出版物WO89 / 08833 日本1989年9月21日。具有电热雾化样品的原子吸收光谱仪和使用塞曼效应的背景补偿包括用于样品的电热雾化的炉子(130),该炉子横向于横向于 测量原子吸收光谱仪的光束(18)和可切换螺线管(44),用于在样品的位置处产生磁场,该磁场平行于测量光束(18)的传播方向延伸,使得 通过接通螺线管(44)获得纵向塞曼效应。 螺线管(44)具有用于测量光束(18)通过的对准孔(50,52)的极片(46,48)。 接触载体(96)布置在支撑接触载体接触(128,176)的极片(48,50)上,以便保持横向加热的炉(130),所述触点的轴线垂直于 测量光束(18)。 励磁线圈(60,62)直接布置在极片(46,48)上。 接触载体(96)与线圈架(56,58)形成一个整体元件。

    Atomic absorption spectrometer
    5.
    发明授权
    Atomic absorption spectrometer 失效
    原子吸收光谱仪

    公开(公告)号:US4989975A

    公开(公告)日:1991-02-05

    申请号:US439404

    申请日:1989-11-16

    IPC分类号: G01N21/31 G01N21/72 G01N21/74

    摘要: In an atomic absorption spectrometer with an atomizing device (190) and a line emitting light source (16), an optical system (22,28 . . . ) for generating a measuring light beam (18), and a photo-electrical detector (38), which are arranged in a housing (10) which forms a sample cavity (12) accessible from the outside and which is passed through by a measuring light beam (18) and into which different atomizing devices can be optionally inserted, the atomizing device (190) with the specific components (104,124,126) is assembled to form an insert unit (100) in which the atomizing device (190) in the form of a graphite furnace has a well-defined position relatively to the insert unit (100) and which in turn can be inserted into the sample cavity (12) in a well-defined position to provide an entirely functioning atomic absorption spectrometer.

    摘要翻译: PCT No.PCT / EP89 / 00258 Sec。 371日期:一九八九年十一月十六日 102(e)日期1989年11月16日PCT申请日1989年3月13日PCT Pub。 公开号WO89 / 08831 日本1989年9月21日。在具有雾化装置(190)和发射光源(16)的原子吸收光谱仪中,用于产生测量光束(18)的光学系统(22,28 ...) 和光电检测器(38),其布置在壳体(10)中,壳体(10)形成从外部可接近并通过测量光束(18)通过的样品腔(12),并且不同的雾化装置 可以可选地插入,具有特定部件(104,124,126)的雾化装置(190)被组装以形成插入单元(100),其中石墨炉形式的雾化装置(190)具有相对明确的位置 到所述插入单元(100),并且所述插入单元又可以在明确定义的位置插入到所述样品腔(12)中,以提供完全功能的原子吸收光谱仪。