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1.发明授权
公开(公告)号：US5108178A
公开(公告)日：1992-04-28
申请号：US500880
申请日：1990-03-29
CPC分类号： G01N21/74
摘要： An atomic absorption spectrophotometer includes a sample-atomizing portion for ashing and atomizing a sample, a power source operable to supply electric current to the sample-atomizing portion, a controller for controlling the operation of the power source, a pair of pressure regulators for setting a flow rate of an inert gas according to an ashing step and an atomization step in the sample-atomizing portion, a pair of movable valves respectively provided downstream of and connected to the pair of pressure regulators, and a filter device provided between the pair of movable valves and the sample-atomizing portion. Either of the pair of movable valves is activated into open or closed condition in synchronism with the operation of the power source so as to select the flow rate of the inert gas into the sample-atomizing portion. An electromagnetic shut-off valve for use in the atomic absorption spectrophotometer includes a valve housing having a valve chamber, and a movable valve body housed in the valve chamber. The movable valve body is movable between open and closed positions so as to open and close a gas flow line. The wall of the valve chamber is coated with a non-metallic material.
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公开(公告)号：US4890919A
公开(公告)日：1990-01-02
申请号：US140715
申请日：1988-01-04
CPC分类号： G01N21/74 , G01J5/601 , G01N2021/745
摘要： An atomic absorption spectrophotometer is disclosed in which, in order to detect the temperature of a graphite cuvette correctly on the basis of the radiation emitted from the inner wall of the graphite cuvette, the above radiation and the measuring light emitted from a hollow cathode lamp are both taken out by the same optical members, and then the radiation is separated from the measuring light, to be detected and used for measuring the temperature of the graphite cuvette.
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公开(公告)号：US4867562A
公开(公告)日：1989-09-19
申请号：US196263
申请日：1988-05-20
CPC分类号： G01N21/3103 , G01N2021/3111 , G01N2021/3114 , G01N21/74 , G01N2201/06166
摘要： An atomic absorption spectrophotometer for simultaneously measuring a plurality of elements different in kind from each other. A cylindrical heating furnace is provided for heating a sample being analyzed to dry, ash and atomize the sample thereby producing atomic vapor. A plurality of hollow-cathode discharge tubes corresponding in number to the elements being detected are arranged for simultaneously emitting light beams respectively containing line spectra of the respective elements, to cause the light beams to be incident upon the heating furnace at respective angles of inclination with respect to a central axis of the heating furnace. A plurality of spectral detection systems are arranged behind the heating furnace in relation to the angles of inclination, for respectively spectral-diffracting and receiving the light beams having their respective line spectra absorbed by the atomic vapor. A signal processing device is provided for carrying out calculation to obtain concentrations or quantities of the respective elements in the sample being analyzed, on the basis of respective ratios of atomic resonance absorption of the respective line spectra spectral-detected.
摘要翻译： 一种用于同时测量彼此不同种类的多种元素的原子吸收分光光度计。 提供圆柱形加热炉，用于加热被分析的样品以干燥，灰分并雾化样品，从而产生原子蒸气。 多个对应于被检测的元件的空心阴极放电管被布置成同时发射分别包含各个元件的线谱的光束，以使光束以相应的倾角入射到加热炉上， 相对于加热炉的中心轴线。 多个光谱检测系统相对于倾斜角度布置在加热炉后面，用于分别衍射和接收具有由原子蒸气吸收的各自线谱的光束。 提供信号处理装置，用于根据频谱检测的各个线谱的原子共振吸收的相应比例进行计算以获得正在分析的样品中的各元素的浓度或数量。
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4.发明授权Analyzer using plasma and analysis method using plasma, interface used for the same and sample introducing component used for the same 失效使用等离子体分析仪和使用等离子体的分析方法，用于相同的界面和用于相同的样品引入组分
公开(公告)号：US5763877A
公开(公告)日：1998-06-09
申请号：US715587
申请日：1996-09-18
CPC分类号： H01J49/105 , G01N21/73
摘要： In an analyzer in which plasma is generated, a sample is supplied to the plasma though an aerosol guide tube and analyzed by a quadrapole mass filter, the top end portion of the aerosol guide tube is made of sapphire.
摘要翻译： 在其中产生等离子体的分析仪中，通过气溶胶引导管将样品供应到等离子体，并通过四极质量过滤器分析，气溶胶引导管的顶端部分由蓝宝石制成。
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5.发明授权Atomic absorption spectrophotometer with furnace at pressure equal or near light source pressure 失效原子吸收分光光度计，炉内压力等于或接近光源压力
公开(公告)号：US4840484A
公开(公告)日：1989-06-20
申请号：US175320
申请日：1988-03-30
CPC分类号： G01N21/74 , G01N2021/745
摘要： In an atomic absorption spectrophotometer including an electric furnace for drying and ashing a liquid sample to be analyzed and then atomizing the sample to generate atomic vapor, a low-pressure lamp for emitting light having a spectrum of an element to be analyzed onto the atomic vapor atomized in the electric furnace, a monochromator for splitting the transmitted light from the electric furnace and selecting a wavelength of an atomic absorption line absorbed by the element to be analyzed, and a signal processing unit for performing signal processing on the light having the selected wavelength supplied from the monochromator, the electric furnace is an airtight mechanism for maintaining airtightness of the inside of the electric furnace and an evacuation unit for evacuating the inside of the electric furnace to a pressure equal to the pressure inside the lamp.
摘要翻译： 在包括用于干燥和灰化待分析的液体样品的电炉，然后将样品雾化以产生原子蒸气的原子吸收分光光度计中的低压灯，用于将具有待分析元素的光谱发射到原子蒸气上的光 在电炉中雾化的单色仪，用于分离来自电炉的透射光并选择待分析元件吸收的原子吸收线的波长的单色仪，以及对具有所选波长的光进行信号处理的信号处理单元 电炉是用于保持电炉内部的气密性的气密机构和用于将电炉的内部抽空至与灯内的压力相等的压力的排气单元。
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6.发明授权
公开(公告)号：US5616918A
公开(公告)日：1997-04-01
申请号：US539258
申请日：1995-10-05
CPC分类号： H01J49/105
摘要： A plasma ion mass spectrometer capable of improving detection accuracy in mass spectrometry by reducing background noise due to ultraviolet radiation and neutral particles, and a plasma ion mass spectrometry using the same. A sample is ionized with plasma in a plasma generating portion. The flow of the ionized sample is shielded by a shield plate after an elapse of a specified time, and ions of the sample accumulated before the shielding is held in an ion trap type mass spectrometric portion for a specified time. The ions of the sample held for the specified time are then subjected to mass spectrometry. During ions of the sample accumulated before the shielding are held, ultraviolet radiation mixed with the ions of the sample disappears, and thereby only ions of the sample can be subjected to mass spectrometry. As a result, background noise is reduced, to improve detection accuracy in mass spectrometry.
摘要翻译： 能够通过降低由于紫外线辐射和中性粒子引起的背景噪声而提高质谱检测精度的等离子体离子质谱仪和使用其的等离子体离子质谱法。 在等离子体产生部分中用等离子体离子化样品。 离子化样品的流动在经过规定时间后被屏蔽板屏蔽，并且在屏蔽之前累积的样品的离子在离子阱型质谱部分中保持一定时间。 然后将保持规定时间的样品的离子进行质谱分析。 在保持屏蔽之前累积的样品的离子中，与样品的离子混合的紫外线辐射消失，从而只能对样品的离子进行质谱分析。 结果，降低背景噪声，提高质谱检测的准确性。
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7.发明授权Mass spectrometer, skimmer cone assembly, skimmer cone and its manufacturing method 失效质谱仪，撇渣锥组件，撇渣器及其制造方法
公开(公告)号：US5793039A
公开(公告)日：1998-08-11
申请号：US605572
申请日：1996-02-22
CPC分类号： H01J49/067
摘要： Disclosed is a structure comprising; (a) Plasma gas is supplied to torch tube 8 from inert pressure vessel 1. (b) Nebulizer 3 absorbs sample 4 to vaporize the sample as aerosol and to introduce it into plasma 5. (c) Plasma 5 touches sampling cone 10 having an opening at the apex and a conical surface, whereby an ion stream is extracted through the opening of the sampling cone whose pressure is reduced at the rear face thereof. (d) The extracted ion stream further touches skimmer cone 12 of the conical surface having a small hole at the apex, and is absorbed into vacuum chamber 13 where the pressure is further reduced at the rear face. (e) The ion stream is flowed into quadruple pole filter 18 to carry out the mass spectrometry analysis of the ion stream.
摘要翻译： 公开了一种结构，包括： （a）将等离子体气体从惰性压力容器1供应给割炬管8.（b）雾化器3吸收样品4以使气溶胶蒸发，并将其引入等离子体5.（c）等离子体5接触采样锥10， 在顶点处开口并具有锥形表面，由此通过其后面压力减小的取样锥体的开口提取离子流。 （d）提取的离子流进一步接触顶点处具有小孔的圆锥形表面的撇渣器锥体12，并被吸收到真空室13中，在该真空室13中后面进一步减小压力。 （e）离子流流入四极过滤器18，进行离子流的质谱分析。
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公开(公告)号：US5202562A
公开(公告)日：1993-04-13
申请号：US724179
申请日：1991-07-01
IPC分类号： G01N27/62 , H01J37/244 , H01J49/04 , H01J49/26
CPC分类号： H01J49/04
摘要： A standard containing the same elements as a sample is prepared. Concentrations of the elements of the standard are known previously. When signal intensities of an element of the standard solution and the sample exceed an upper limit of a pulse counter of an element analyzing apparatus, a transmitting rate of a passage, through which ionized elements of the standard and the sample pass, is controlled to be less than the ordinal transmitting rate of the passage in synchronism to the passing time of the elements. The concentrations of the elements of the sample is calculated based on output signals of the pulse counter concerning the elements of the standard and the sample and known concentration of the standard.
摘要翻译： 制备含有与样品相同元素的标准品。 标准要素的浓度先前已知。 当标准溶液和样品的元素的信号强度超过元素分析装置的脉冲计数器的上限时，将标准品和样品通过的通道的透射率控制为 小于通道的顺序传输速率与元件的通过时间同步。 基于脉冲计数器的输出信号计算样品的元素浓度，该脉冲计数器与标准品和样品的元素以及标准品的已知浓度相关。
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公开(公告)号：US06248998B1
公开(公告)日：2001-06-19
申请号：US09020381
申请日：1998-02-09
申请人： Toyoharu Okumoto , Masamichi Tsukada , Akira Owada
发明人： Toyoharu Okumoto , Masamichi Tsukada , Akira Owada
IPC分类号： B01D5944
CPC分类号： H01J49/105
摘要： A plasma ion source mass spectrometer comprising a plasma ion source 40 for ionizing a sample with a plasma; a mass filter 60 for subjecting the sample ionized by the plasma ion source 40 to mass spectrometry; and an interface unit 50 having an orifice formed in a cone 52, 54 for introducing the sample ionized by the plasma ion source 40 into the mass filter 60. Further the plasma ion source mass spectrometer comprises a first cooler 49 for cooling a plasma generator 41 of the plasma ion source 40 and a plasma generating power source 44; and a second cooler 56 independent of the first cooler 49, for cooling the interface unit 50 and for raising the temperature by changing the cooling efficiency so as to reduce the influence of deposition on the interface unit 50. With this construction, the temperature of the interface unit can be controlled without changing the analysis sensitivity of the plasma ion source mass spectrometer.
摘要翻译： 一种等离子体离子源质谱仪，其包括用于使等离子体离子化的等离子体离子源40; 质量过滤器60，用于对由等离子体离子源40离子化的样品进行质谱分析; 以及具有形成在锥体52,54中的孔口的接口单元50，用于将由等离子体离子源40离子化的样品引入质量过滤器60.此外，等离子体离子源质谱仪包括用于冷却等离子体发生器41的第一冷却器49 的等离子体离子源40和等离子体发生电源44; 以及独立于第一冷却器49的第二冷却器56，用于冷却接口单元50并且通过改变冷却效率来提高温度，从而减少对接口单元50的沉积的影响。通过这种结构， 可以控制接口单元，而不改变等离子体离子源质谱仪的分析灵敏度。
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10.发明授权
公开(公告)号：US5283624A
公开(公告)日：1994-02-01
申请号：US597324
申请日：1990-10-15
申请人： Masamichi Tsukada , Konosuke Oishi
发明人： Masamichi Tsukada , Konosuke Oishi
IPC分类号： G01J3/04 , G01J3/10 , G01J3/12 , G01J3/18 , G01J3/36 , G01N21/31 , G01N21/74 , G01J3/42 , G01J3/28
CPC分类号： G01J3/06 , G01J3/04 , G01N21/3103 , G01J2003/045 , G01J2003/104 , G01J2003/1295 , G01J2003/1885 , G01J3/36 , G01N2021/3114 , G01N21/74
摘要： Incident slits and exit slits are provided separately on corresponding optical axes incident simultaneously on a spectroscope from a sample atomizing unit. A mechanism for changing the widths of the respective incident slits and exiting slits is provided such that the slit widths optimal to the respective elements to be measured are set on the corresponding optical axes to thereby realize high sensitivity analysis of all the elements to be measured simultaneously.
摘要翻译： 在样品雾化单元上同时入射到分光镜上的相应的光轴上分别设置入射狭缝和出口狭缝。 设置用于改变各个入射狭缝和出射狭缝的宽度的机构，使得对于相应的测量元件最佳的狭缝宽度被设置在相应的光轴上，从而实现所有待测元素的高灵敏度分析 。
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