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公开(公告)号：US5104220A
公开(公告)日：1992-04-14
申请号：US316964
申请日：1989-02-28
CPC分类号： G01N21/74
摘要： An atomic absorption spectrophotometer comprising means for setting the ashing temperature for that of the element having the lowest ashing temperature; means for setting the atomizing temperature for that of the element having the highest atomizing temperature; and means for effecting background correction utilizing Zeeman effect.
摘要翻译： 一种原子吸收分光光度计，包括用于设定具有最低灰度温度的元件的灰度温度的装置; 用于设定具有最高雾化温度的元件的雾化温度的装置; 以及利用塞曼效应进行背景校正的方法。
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2.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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4.发明授权Light source lamp with particular envelope structure to accommodate external magnets 失效具有特殊外壳结构的光源灯，以适应外部磁铁
公开(公告)号：US4100446A
公开(公告)日：1978-07-11
申请号：US474812
申请日：1974-05-30
摘要： In a tubular bulb filled with inert gas, a cathode and an anode are disposed opposite to each other. Electric discharge is caused between the electrodes to emit optical radiation. The bulb has a smaller diameter at the portion thereof which surrounds the electrodes than at the other portion of the bulb, and a magnet to establish magnetic field to cause Zeeman effect in the direction of the electric field between the electrodes is disposed near the portion of the bulb having the smaller diameter.
摘要翻译： 在填充有惰性气体的管状灯泡中，阴极和阳极彼此相对设置。 在电极之间产生放电以发射光辐射。 灯泡在其围绕电极的部分具有比在灯泡的另一部分更小的直径，并且建立磁场以在电极之间的电场方向上产生塞曼效应的磁体设置在 灯泡具有较小的直径。
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5.发明授权Apparatus for atomizing a sample including a slidable pressure maintaining arrangement 失效用于雾化样品的装置，包括可滑动的压力保持装置
公开(公告)号：US4432643A
公开(公告)日：1984-02-21
申请号：US245162
申请日：1981-03-18
申请人： Hideaki Koizumi , Yosio Taiti , Kazuo Moriya , Katsuhito Harada , Kazuo Sato
发明人： Hideaki Koizumi , Yosio Taiti , Kazuo Moriya , Katsuhito Harada , Kazuo Sato
CPC分类号： G01N21/74
摘要： An apparatus for atomizing a sample comprises a cuvette of heating material into which a sample is introduced, a pair of electrodes of supplying an electric current to the cuvette, thereby heating and atomizing the sample, supports of supporting the pair of the electrodes, a means for supplying light to the atomized sample and a means of slidably maintaining at least one of the pair of the electrodes against the cuvette in a predetermined range of contact pressures, where the heating temperature of the cuvette can be maintained constant with improved reproducibility of analytical values.
摘要翻译： 用于对样品进行雾化的装置包括：向其中引入样品的加热材料的比色皿，向比色皿供应电流的一对电极，从而加热和雾化样品，支撑一对电极的支撑体， 用于向雾化样品提供光，以及在预定接触压力范围内可滑动地将一对电极中的至少一个电极抵靠反应杯的装置，其中比色杯的加热温度可以通过分析值的再现性得到改善而保持恒定 。
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公开(公告)号：US5042946A
公开(公告)日：1991-08-27
申请号：US518422
申请日：1990-05-02
申请人： Katsuhito Harada
发明人： Katsuhito Harada
IPC分类号： G01N21/31
CPC分类号： G01N21/3103 , G01N2021/3118
摘要： An atomic absorption spectrophotometric apparatus, which includes a first light source emitting plural specific spectra by changing the current of the first light source into relatively small and large currents, a second light source emitting a continuous spectrum, an atomizer for atomizing a sample, a beam combiner for directing the spectrum emitted from the first light source and the second light source to the atomized sample, a detector for detecting the plural specific spectra and the continuous spectrum which passes through the atomized sample, and a computer for obtaining spectrum absorbances of the plural specific spectra and the continuous spectrum from the outputs of the detector and obtaining a concentration of a specific element on the basis of a combination of the spectrum absorbances. As the sample concentration is calculated from the two spectrums and the continuous spectrum, the background is corrected and at the same time the measuring range of the concentration is expanded so as to obtain the concentration with high accuracy.
摘要翻译： 一种原子吸收分光光度计，其包括通过将第一光源的电流改变为相对小的和大的电流而发射多个特定光谱的第一光源，发射连续光谱的第二光源，用于雾化样品的雾化器 用于将从第一光源和第二光源发射的光谱引导到雾化样品的组合器，用于检测多个特定光谱的检测器和通过雾化样品的连续光谱;以及用于获得多个光谱吸收的计算机 特定光谱和来自检测器的输出的连续光谱，并且基于光谱吸收的组合获得特定元素的浓度。 由于从两个光谱和连续光谱计算样品浓度，校正背景，并且同时扩大浓度的测量范围，以便以高精度获得浓度。
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7.发明授权
公开(公告)号：US5434665A
公开(公告)日：1995-07-18
申请号：US101870
申请日：1993-08-04
申请人： Hayato Tobe , Katsuhito Harada
发明人： Hayato Tobe , Katsuhito Harada
CPC分类号： G01N21/74 , G01N21/3103
摘要： A sample disposed in a graphite tube in a furnace is subjected to thermal treatment at successive stages, drying, ashing and atomization and atomic absorption due to an element contained in the sample is measured. Amounts of inert carrier gas supplied to the graphite tube are different for different samples. The carrier gas flow rate at each of the stages is varied so as to reduce influences of background when each of the samples is treated. The carrier gas flow rate is varied, depending on the magnitude of a background signal measured on the basis of light which has passed through the graphite tube.
摘要翻译： 在炉中的石墨管中设置的样品在连续的阶段进行热处理，干燥，灰化和雾化，并且测量由于样品中包含的元素引起的原子吸收。 供应给石墨管的惰性载气量对于不同的样品是不同的。 改变各级的载气流量，以便在处理每个样品时减少背景的影响。 载气流量根据基于通过石墨管的光测量的背景信号的大小而变化。
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公开(公告)号：US5235862A
公开(公告)日：1993-08-17
申请号：US731867
申请日：1991-07-18
申请人： Katsuhito Harada
发明人： Katsuhito Harada
CPC分类号： G01N21/74 , G01N35/1095
摘要： A sample handling apparatus includes a furnace which atomizes elements to be tested in a sample. A matrix modifier is added to the furnace. A quantity of the sample is subsequently added to the furnace. An additional quantity of the matrix modifier is then added into the furnace. The furnace is heated to atomization temperature to permit analysis of the sample to be tested.
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