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    • 1. 发明授权
    • Graphite tube atomizer for flameless atomic absorption spectroscopy
    • 石墨管雾化器,用于无焰原子吸收光谱
    • US4175863A
    • 1979-11-27
    • US787036
    • 1977-04-13
    • Rolf G. TammGunter GrosserToma Tomoff
    • Rolf G. TammGunter GrosserToma Tomoff
    • G01N21/74H05B3/00G01J3/30H01R13/54H01R13/62
    • G01N21/74H05B3/0014
    • A graphite tube atomizer for flameless atomic absorption spectroscopy includes a graphite tube disposed to permit passage of a measuring beam therethrough. The graphite tube is engaged at opposite ends by annular contact pieces which are coupled to a source of electrical current. The contact pieces are supported in housing portions which serve to surround the graphite tube and provide a chamber into which cooling gasses can be admitted. The cooling gasses also serve to reduce deterioration of the graphite tube. The housing portions are selectively movable either toward or away from each under the power of a drive mechanism. The housings may be urged by the drive mechanism toward each other so the contacts mounted thereon are in selectable pressure engaging contact opposite ends of the graphite tube.
    • 用于无焰原子吸收光谱的石墨管雾化器包括设置成允许测量光束通过的石墨管。 石墨管通过耦合到电流源的环形接触件在相对端处接合。 接触片被支撑在用于围绕石墨管的壳体部分中并且提供可以容纳冷却气体的腔室。 冷却气还用于减少石墨管的劣化。 壳体部分可以选择性地在驱动机构的动力下朝向或远离每个移动。 壳体可以被驱动机构朝向彼此推动,使得安装在其上的触点在石墨管的相对端的可选择的压力接合接触中。
    • 5. 发明授权
    • Rinsing liquid apparatus for analytical instruments
    • 用于分析仪器的冲洗液体装置
    • US4991610A
    • 1991-02-12
    • US10352
    • 1987-02-03
    • Bernhard HuberToma Tomoff
    • Bernhard HuberToma Tomoff
    • G01N35/10G01N1/00G01N21/31
    • G01N35/1095
    • The present application is directed to new and improved apparatus for use in analytical instruments which includes an elongated dosing tube having a tip at one end which is constructed and arranged to move between a sample vessel, a rinsing vessel and an analytical instrument; the other end of the dosing tube being connected in fluid flow communication to a rinsing liquid supply vessel through a sample pump assembly and a rinsing liquid pump assembly; the liquid pump assembly including a pump cylinder having an inlet and an outlet; a pump piston arranged for reciprocal movement in the pump cylinder between a first end position in the discharge direction and an opposite second end position in the intake direction; a first check valve mounted on the inlet of the pump cylinder and a second check valve mounted on the outlet of the pump cylinder; a seal mounted adjacent the outlet which cooperates with the pump piston to sealingly close the outlet when the pump piston is positioned in its first end position in the discharged direction.
    • 本申请涉及用于分析仪器的新的和改进的装置,其包括细长的计量管,其具有在一端的尖端,其构造和布置成在样品容器,漂洗容器和分析仪器之间移动; 定量管的另一端通过样品泵组件和冲洗液体泵组件与流体流动连通地连接到冲洗液体供应容器; 所述液体泵组件包括具有入口和出口的泵筒; 泵活塞,其布置成在排出方向上的第一端部位置和进气方向上相对的第二端部位置之间在泵筒中往复移动; 安装在泵缸的入口上的第一止回阀和安装在泵缸的出口上的第二止回阀; 邻近出口安装的密封件,当泵活塞沿排出方向定位在其第一端部位置时,该密封件与泵活塞协作以密封地关闭出口。
    • 8. 发明授权
    • Apparatus for automatically transporting liquid samples to an analyzer
    • 用于将液体样品自动输送到分析仪的装置
    • US4312591A
    • 1982-01-26
    • US56751
    • 1979-07-12
    • Toma Tomoff
    • Toma Tomoff
    • G01N21/31G01N1/00G01N35/10G01N21/73
    • G01N35/1095
    • Disclosed is apparatus for automatically transporting liquid samples from sample vessels to the burner of a flame atomic absorption spectrometer or a flame photometer. A sample feed tube pivots between a first position with its end disposed in a sample feeding vessel for discharging, in sequence, sample liquid and a flushing liquid into the feeding vessel and a second position with its end in communication with a sample vessel. The sample feeding vessel has an upper opening, a bottom outlet, and a cavity between the outlet and opening having an annular convex interior surface to ensure accurate and repeated insertion of the sample feed tube into the sample feeding vessel when the sample feed tube is moved into its first position and full and complete discharge of the sample liquid into the sample feeding vessel. A control mechanism is provided to prevent discharge of the sample liquid from the sample feed tube unless and until the sample feed tube obtains its first position.
    • 公开了一种用于将液体样品从样品容器自动输送到火焰原子吸收光谱仪或火焰光度计的燃烧器的装置。 样品进料管在第一位置和第二位置之间枢转,其第一位置设置在样品供给容器中,用于依次将样品液体和冲洗液体排放到进料容器中,以及第二位置,其末端与样品容器连通。 样品进料容器具有上部开口,底部出口和出口和开口之间的空腔,其具有环形的凸形内表面,以确保当样品进料管移动时准确和重复地将样品进料管插入样品进料容器 进入其第一位置并将样品液体充分和完全排出到样品进料容器中。 提供控制机构以防止样品液从样品进料管中排出,除非和直到样品进料管获得其第一位置。
    • 9. 发明授权
    • Polarimeter
    • 偏光仪
    • US5005977A
    • 1991-04-09
    • US429218
    • 1989-10-30
    • Toma Tomoff
    • Toma Tomoff
    • G01N21/21G01J4/04
    • G01J4/04
    • A polarimeter for measuring the rotation of optically active samples comprises a light source which generates a measuring light beam, a polarizer mounted for rotation about the beam axis of the measuring light beam, a driving mechanism for reciprocating rotational movement of the polarizer, a sample vessel, an analyzer behind the sample vessel, a photoelectric detector, and balancing means which are controlled by the signal of the photoelectric detector and by which a position can be achieved in which the polarizer and analyzer are arranged substantially crosswise. The balancing means comprises a steeper motor for rotating the polarizer with an adjusting movement superimposed by the reciprocatingly rotational movement by which adjusting movement a quick coarse balancing of the polarizer plane of the measuring light beam relative to a zero position of the analyzer is achieved. Fine measuring means are provided for the fine measuring of the angle between the polarization plane of the analyzer in its zero position and the polarization plane of the coarsely balanced measuring light beam.
    • 用于测量光学活性样品的旋转的旋光计包括产生测量光束的光源,安装用于围绕测量光束的光束轴线旋转的偏振器,用于偏振器的往复旋转运动的驱动机构,样品容器 ,样品容器背后的分析仪,光电检测器和平衡装置,其由光电检测器的信号控制,并且可以实现将偏振器和分析器基本上交叉布置的位置。 该平衡装置包括一个较陡的电动机,用于通过叠加在往复旋转运动上的调节运动来旋转偏振器,通过该调节运动,可以实现测量光束的偏振器平面相对于分析仪的零位置的快速粗略平衡。 提供精细的测量装置,用于精细测量分析仪在其零位的偏振面与粗平衡测量光束的偏振平面之间的角度。