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21. 发明授权

US4225234A Method for sampling in flameless atomic absorption spectrophotometry 失效
标题翻译：无焰原子吸收分光光度法取样方法
公开(公告)号：US4225234A
公开(公告)日：1980-09-30
申请号：US928490
申请日：1978-07-27
申请人： Paul Schmider , Wolfgang Ruberg
发明人： Paul Schmider , Wolfgang Ruberg
IPC分类号： G01N21/74 , G01J3/30
CPC分类号： G01N21/74
摘要： A method of flameless atomic absorption analysis in which an element in a sample is measured by vaporizing the sample in a graphite crucible or cuvette and measuring the absorbance of the atomic vapor at a wavelength characteristic of the element. The method includes the steps of (1) successively introducing a preselected number of aliquots of the same sample into the graphite cuvette, (2) thermally pretreating each sample aliquot upon introduction to remove volatile or decomposable substances therefrom, and (3) vaporizing sample remaining in the cuvette for measurement only after performing the predetermined successive number of sample introduction and thermal pretreatment cycles.
摘要翻译：一种无焰原子吸收分析方法，其中样品中的元素通过在石墨坩埚或比色杯中汽化样品并测量元件的波长特性处的原子蒸气的吸光度来测量。该方法包括以下步骤：（1）将相同样品的预选数量的等份连续地引入石墨比色皿中，（2）在引入时对每个样品等分试样进行热处理以从其中除去挥发性或可分解物质，和（3）蒸发样品剩余仅在执行预定的连续数量的样品引入和热预处理循环之后进行测量。

22. 发明授权

US4204769A Cuvette for flameless atom absorption spectroscopy 失效
标题翻译：比武杯用于无焰原子吸收光谱
公开(公告)号：US4204769A
公开(公告)日：1980-05-27
申请号：US870200
申请日：1978-01-17
申请人： Bernhard Lersmacher , Hans Lydtin , Karlheinz Schelhas , Wilhelmus F. Knippenberg
发明人： Bernhard Lersmacher , Hans Lydtin , Karlheinz Schelhas , Wilhelmus F. Knippenberg
IPC分类号： B32B18/00 , C01B31/04 , C04B35/524 , C04B35/83 , C23C16/26 , G01N21/74 , G01N21/16
CPC分类号： C04B35/83 , C04B35/524 , G01N21/74
摘要： Cuvettes of carbonized laminated fabric with a surface layer of pyrolytic graphite are easy to manufacture, have a high mechanical rigidity and no memory effect and enable the operation of analysis apparatuses at normal mains voltage (220 V).
摘要翻译：具有热解石墨表面层的碳化叠层织物的比色杯容易制造，具有高机械刚度和无记忆效应，并使分析装置在正常电源电压（220V）下的操作。

23. 发明授权

US4201469A Aerosol deposition in furnace atomization 失效
标题翻译：气雾剂沉积在炉子雾化
公开(公告)号：US4201469A
公开(公告)日：1980-05-06
申请号：US821148
申请日：1977-08-02
申请人： Jaroslav P. Matousek , Lloyd E. Smythe
发明人： Jaroslav P. Matousek , Lloyd E. Smythe
IPC分类号： G01N21/74 , G01N1/00 , G01J3/30
CPC分类号： G01N21/74
摘要： A novel approach to sample deposition in furnace atomization is disclosed which obviates the need for skilled application of microvolumes by syringe. By means of the apparatus and method disclosed, the analyte in aerosol form is deposited under controlled conditions on the internal surface areas of graphite furnaces. Precision approaching that of flame atomization systems is achieved and at the same time, concentrational sensitivity may be increased simply by extending the deposition time. The amount of analyte deposited in the furnace is restricted only by the sample volume available and the matrix concentration. A single standard can be used to construct a calibration curve by simply varying the aerosol deposition time.
摘要翻译：公开了一种在炉子雾化中样品沉积的新方法，其消除了通过注射器熟练应用微量体积的需要。通过所公开的装置和方法，将烟雾形式的分析物在受控条件下沉积在石墨炉的内表面区域上。实现了火焰雾化系统的精确逼近，同时可以简单地通过延长沉积时间来增加浓度灵敏度。沉积在炉中的分析物的量仅由可用的样品体积和基质浓度限制。单一标准可用于通过简单地改变气溶胶沉积时间来构建校准曲线。

24. 发明授权

US4181438A Direct temperature control and measurement for furnace atomizers in atomic spectroscopy 失效
标题翻译：原子光谱法炉式雾化器的直接温度控制和测量
公开(公告)号：US4181438A
公开(公告)日：1980-01-01
申请号：US846326
申请日：1977-10-28
申请人： Lloyd E. Smythe , Jaroslav P. Matousek
发明人： Lloyd E. Smythe , Jaroslav P. Matousek
IPC分类号： G01N21/74 , G05D23/24 , G01J3/30
CPC分类号： G01N21/74 , G05D23/2401
摘要： Apparatus for directly controlling the power delivered to an electrically heated furnace atomizer for use in atomic spectroscopy and thus for controlling the temperature of the furnace by utilizing dimensional changes produced in the furnace due to thermal expansion and contraction to produce electrical signals that are used by means of a feedback control to control the electrical input to the furnace.
摘要翻译：用于直接控制传递到电加热炉雾化器用于原子光谱学的功率并因此通过利用由于热膨胀和收缩而在炉中产生的尺寸变化来控制炉的温度的装置，以产生由装置使用的电信号的反馈控制来控制对炉的电输入。

25. 发明授权

US4146331A Atomizing tube for atomic absorption spectrometers 失效
标题翻译：用于原子吸收光谱仪的雾化管
公开(公告)号：US4146331A
公开(公告)日：1979-03-27
申请号：US901957
申请日：1978-05-01
申请人： Bernhard W. Huber
发明人： Bernhard W. Huber
IPC分类号： G01N21/74 , G01N21/16 , G01J3/30
CPC分类号： G01N21/74
摘要： The combustion of hydrogen at the open ends of an atomic absorption spectrometer heated atomizing tube that is being supplied with substances or reagents containing volatile hydrides is eliminated by tube extensions of low heat conductive material that lower the temperature of the gas below its flash point.
摘要翻译：原子吸收光谱仪加热的雾化管的开放端处的氢的燃烧被提供有含有挥发性氢化物的物质或试剂，由低导热材料的管延长部分消除，其将气体的温度降低到其闪点以下。

26. 发明授权

US4134685A Flameless atomization 失效
标题翻译：无焰雾化
公开(公告)号：US4134685A
公开(公告)日：1979-01-16
申请号：US751761
申请日：1976-12-16
申请人： Edward G. Egan , Ian S. Jackson , Peter Bennett
发明人： Edward G. Egan , Ian S. Jackson , Peter Bennett
IPC分类号： G01N21/74 , G05F1/12 , G01J3/30
CPC分类号： G05F1/12 , G01N21/74
摘要： Chemical analysis apparatus such as a spectrophotometer, having a carbon rod or other non-flame atomizer which is adapted to be heated by electrical resistance heating. The atomizer is included in a heater circuit, and a particular relationship exists between the electrical resistance of the atomizer and the electrical resistance of the remainder of that circuit. That relationship is such that variations in the atomizer resistance as may occur over a period of use, do not substantially affect power dissipation in the atomizer during heating. Ideally, the two resistance values are equal, but variations from the ideal are satisfactory in practice. A feed-back circuit is arranged to maintain a substantially constant voltage across the heater circuit, and that is achieved by comparing the applied voltage with a reference voltage and modifying the applied voltage as necessary to maintain a predetermined relationship between the two.
摘要翻译：化学分析装置如分光光度计，具有碳棒或其他非火焰雾化器，其适于通过电阻加热加热。雾化器被包括在加热器电路中，并且在雾化器的电阻和该电路的其余部分的电阻之间存在特定的关系。这种关系使得在使用期间可能发生的雾化器电阻的变化基本上不影响加热期间雾化器中的功率耗散。理想情况下，两个电阻值相等，但实际上理想的变化是令人满意的。反馈电路被布置成在加热器电路两端保持基本上恒定的电压，并且这是通过将所施加的电压与参考电压进行比较而实现的，并且根据需要修改所施加的电压以维持两者之间的预定关系。

27. 发明授权

US4022530A Device for atomizing a sample for flameless atomic absorption measurements 失效
标题翻译：用于将样品雾化的无机原子吸收测量装置
公开(公告)号：US4022530A
公开(公告)日：1977-05-10
申请号：US608558
申请日：1975-08-28
申请人： Klaus Braun , Wolfgang Chlosta , Franz Eier , Bernhard Werner Huber , Rolf Gunther Arnold Tamm
发明人： Klaus Braun , Wolfgang Chlosta , Franz Eier , Bernhard Werner Huber , Rolf Gunther Arnold Tamm
IPC分类号： G01N21/74 , H05B3/00 , G01N21/16 , G01J3/30
CPC分类号： H05B3/0014 , G01N21/74
摘要： A graphite furnace for flameless atomic absorption spectroscopy comprising a graphite sample tube with a sample port at the mid-point of its length. Electrodes supportively contact the tube ends and pass electrical heating current through the tube. The electrodes have hollow cylindrical portions which laterally envelope the tube over substantially its entire length, one of the electrodes being longer than the other and containing a radial bore in registration with the sample port. The cylindrical portions of the electrodes are disposed with complementary-shaped recesses in cooling jackets which encase all but the mid-length regions of the electrode cylindrical portions. The electrodes fit readily in the cooling jackets at room temperature due to differential expansion of these members. The sample tube, electrodes, cooling jackets and associated structure are mounted on a base with provisions for adjustment of the tube about various orthogonal axes.
摘要翻译：一种用于无焰原子吸收光谱的石墨炉，包括在其长度中点处具有样品端口的石墨样品管。电极支持接触管端，并通过电加热电流通过管。电极具有中空圆柱形部分，其在基本上整个长度上横向地包围管，其中一个电极比另一个长，并且包含与样品端口对准的径向孔。电极的圆柱形部分设置有冷却夹套中的互补形状的凹部，除了电极圆柱形部分的中间部分之外，所有凹部都包围着。由于这些构件的差异扩大，电极在室温下很容易配合在冷却夹套中。样品管，电极，冷却夹套和相关结构安装在基座上，用于调节管子关于各种正交轴线。

28. 发明授权

US3982834A Device for atomization of a sample 失效
标题翻译：样品雾化装置
公开(公告)号：US3982834A
公开(公告)日：1976-09-28
申请号：US608514
申请日：1975-08-28
申请人： Rolf Gunther Arnold Tamm
发明人： Rolf Gunther Arnold Tamm
IPC分类号： G01N21/74 , H05B3/00 , G01J3/30 , G01N21/16
CPC分类号： G01N21/74 , H05B3/0014
摘要： A heated graphite sample-atomizer for flameless atomic absorption spectroscopy in which a graphite sample tube is coaxially disposed within a pair of generally cylindrical electrode members which jointly envelope substantially the entire tube and define therewith a cylindrical flow passage for inert gas. The electrode members make electrical contact with respective ends of the tube to enable passage of a heating current therethrough. At least the outer end portions of the electrode members are telescoped within respective cooling jackets, the external cylindrical surfaces of the electrode members making a snug fit with complementary internal cylindrical surfaces of the cooling jackets at room temperature. The respective thermal expansion coefficients of the materials of the electrode members and cooling jackets are such as to create a press fit between the electrode members and cooling jackets under operating conditions.
摘要翻译：一种用于无焰原子吸收光谱的加热石墨样品雾化器，其中石墨样品管同轴地设置在一对大致圆柱形的电极构件中，该一对大致圆柱形的电极构件基本上围绕整个管并且限定用于惰性气体的圆柱形流动通道。电极构件与管的相应端部电接触以使加热电流能够通过。至少电极构件的外端部分可伸缩在相应的冷却夹套内，电极构件的外圆柱形表面在室温下与冷却夹套的互补内圆柱表面贴合配合。电极部件和冷却套的材料的各自的热膨胀系数是这样的，以便在操作条件下在电极部件和冷却套之间形成压配合。

29. 发明授权

US3895873A Spectroscopic analysis apparatus utilizing a tubular heating element and a passive sample holder 失效
标题翻译：利用管状加热元件和被动样品架的光谱分析装置
公开(公告)号：US3895873A
公开(公告)日：1975-07-22
申请号：US45779874
申请日：1974-04-04
申请人： INSTRUMENTATION LABOR INC
发明人： DENNISON ALLAN G , BANCROFT MARTHA F , SMITH JR STANLEY B , TOLKOFF MARC JOSHUA
IPC分类号： G01N21/74 , H05B3/00 , G01J3/02
CPC分类号： H05B3/0014 , G01N21/74
摘要： Spectroscopic analysis apparatus utilizes a tubular electrothermal heating element and a passive sample holder. The sample holder is insertable through an access opening in the heating element to rest in intimate heat transfer contact with an interior surface, and includes a portion which restricts vapor flow through the access opening.
摘要翻译：光谱分析装置利用管状电热加热元件和被动样品架。样品保持器可通过加热元件中的进入开口插入，以与内表面进行紧密的热传递接触，并且包括限制蒸气通过进入开口的部分。

30. 发明授权

US3876305A Demountable sputtering cathode for atomic absorption spectroscopy 失效
标题翻译：用于原子吸收光谱的可拆卸的溅射阴极
公开(公告)号：US3876305A
公开(公告)日：1975-04-08
申请号：US38908873
申请日：1973-08-17
申请人： COMMW SCIENT IND RES ORG
发明人： GOUGH DAVID SAMUEL , HANNAFORD PETER , WALSH ALAN
IPC分类号： G01N21/62 , G01N21/67 , G01N21/74 , H05H3/02 , G01J3/02
CPC分类号： H05H3/02 , G01N21/62 , G01N21/67 , G01N21/74
摘要： Techniques and apparatus for measuring the concentration of elements in a solid metal sample by atomic absorption and fluorescence are described. A silica disc with an annular discharge-suppressing gap surrounding the sample area and an Oring seal are used to locate a surface of the sample for sputtering, and gas passages in the disc allow sputtered atoms to be swept into the body of a vacuum chamber for convenient analysis.

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