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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：US4468121A
公开(公告)日：1984-08-28
申请号：US361381
申请日：1982-03-24
申请人： Hideaki Koizumi , Konosuke Oishi
发明人： Hideaki Koizumi , Konosuke Oishi
CPC分类号： G01N21/255 , G01J3/18
摘要： A spectrophotometric analyzer disclosed by this invention has two monochromators capable of operating independently of each other. In each monochromator, a light beam from a light source is made to be incident on an entrance slit, and, after dispersed and wavelength scanned, issued from an exit slit as an analyzed light beam. These analyzed light beams are detected by detectors. The entrance slits and the exit slits of the two monochromators are disposed rotation symmetrically. This can simplify the operation of switching between a series mode where the analyzed light from the exit slit of the one monochromator is made to be incident on the entrance slit of the other monochromator and a parallel mode where the both monochromators operate for detection independently from each other.
摘要翻译： 本发明公开的分光光度计分析仪具有能够彼此独立操作的两个单色仪。 在每个单色仪中，来自光源的光束被入射到入口狭缝上，并且在分散和波长扫描之后，作为分析光束从出口狭缝发出。 这些分析的光束被检测器检测。 两个单色仪的入口狭缝和出口狭缝对称地设置。 这可以简化在一个单色仪的出射狭缝处分析的光被入射在另一个单色仪的入射狭缝上的串联模式之间切换的操作以及两个单色仪独立于每个单独仪进行检测的并行模式 其他。
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公开(公告)号：US4198589A
公开(公告)日：1980-04-15
申请号：US871807
申请日：1978-01-24
申请人： Shinji Mayama , Masataka Koga , Yoji Arai , Konosuke Oishi
发明人： Shinji Mayama , Masataka Koga , Yoji Arai , Konosuke Oishi
CPC分类号： H01J61/66
摘要： A spectral source comprises a lamp containing an anode and a cathode in an inert gas. The anode and cathode are different in shape and connected to a high-frequency power source to produce a high-frequency discharge between the anode and cathode to cause both sputtering of the cathode and excitation of a radiation having the spectrum according to the material sputtered from the cathode. The application of solely high-frequency power prevents adherence of the sputtered material to the interior walls of the lamp bulb thereby allowing a reduction of the dimensions of the lamp bulb, prolongating the life time of the lamp and increasing the stability and intensity of the radiation. A magnetic field may be applied to the radiation for Zeeman modulation. Due to the relatively small dimensions of the lamp bulb, relatively small and inexpensive magnets may be used.
摘要翻译： 光谱源包括在惰性气体中含有阳极和阴极的灯。 阳极和阴极的形状不同，并连接到高频电源，以在阳极和阴极之间产生高频放电，使得阴极溅射和具有根据溅射的材料的光谱的辐射 阴极。 单独使用高频功率可防止溅射材料对灯泡内壁的粘附，从而可以减小灯泡的尺寸，延长灯泡的使用寿命并增加辐射的稳定性和强度 。 可以将磁场施加到用于塞曼调制的辐射。 由于灯泡的尺寸相对较小，所以可以使用相对较小和便宜的磁体。
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14.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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15.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：US4948250A
公开(公告)日：1990-08-14
申请号：US621464
申请日：1984-06-18
申请人： Konosuke Oishi , Hideaki Koizumi , Masataka Koga
发明人： Konosuke Oishi , Hideaki Koizumi , Masataka Koga
CPC分类号： G01N21/3103 , G01N2021/3111
摘要： In atomic absorption spectrophotometers such as Zeeman atomic absorption spectrophotometer, the present invention is characterized in that the correction timing of background absorption in sample light is made to coincide with that of reference light so as to improve the accuracy of the output signals of the spectrophotometer. To accomplish this object, the present invention constitutes a calculation processing unit for storing and calculating signals by means for separating one signal consisting of sample signals and reference signals applied thereto from amplification means for amplifiying photoelectrically converted signals into sample and reference signals, and storing them, means for calculating respectively the mean values of two time adjacent signals of one of the sample and reference signals to prepare a signal of the mean values, and means for calculating the difference of the logarithmic converted values of the signals of the other of the sample and reference signals and those of the signals of the signal of the mean values at the same points of time, and obtaining correction signals of background absorption.
摘要翻译： 在诸如塞曼原子吸收分光光度计的原子吸收分光光度计中，本发明的特征在于使得样品光中的背景吸收的校正时间与参考光的校正时间一致，以提高分光光度计的输出信号的精度。 为了实现该目的，本发明构成了一种计算处理单元，用于通过用于将由采样信号和从其施加的参考信号组成的一个信号分离出来，用于存储和计算信号，该放大装置用于将光电转换的信号放大为采样和参考信号，并将它们存储 分别计算采样和参考信号之一的两个时间相邻信号的平均值以准备平均值的信号的装置，以及用于计算另一个样本的信号的对数转换值之差的装置 参考信号和相同时间点的平均值信号的信号，得到背景吸收的校正信号。
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17.发明授权
公开(公告)号：US4645341A
公开(公告)日：1987-02-24
申请号：US604939
申请日：1984-04-27
CPC分类号： G01N21/3103 , G01J2003/4275 , G01N2021/3111 , G01N21/74
摘要： A double polarized light beam spectrophotometer of a light-source modulation type. A modulated light beam emitted by a light source is conducted through specimen atom vapor generated by a graphite atomizer. Wavelength of light undergone atom absorption is selected and spatially separated into a pair of linearly polarized light beams perpendicular to each other. The pair of the linearly polarized light beams separated are alternately passed through a chopper and received by a photoelectric conversion device to be converted into electric signals which are utilized for determining atomic absorption of the specimen. The phase of modulation of light radiated from the light source is synchronized with phase of a current supplied to the graphite atomizer for heating thereof and the switching timing of the chopper.
摘要翻译： 一种光源调制型双偏振光束分光光度计。 由光源发射的调制光束通过由石墨雾化器产生的试样原子蒸气进行。 选择原子吸收的光的波长并在空间上分离为彼此垂直的一对线性偏振光束。 分离出的一对线偏振光交替地通过斩波器并由光电转换装置接收，以转换成用于确定样品的原子吸收的电信号。 从光源辐射的光的调制相位与提供给石墨雾化器的电流的相位同步，以加热它们以及斩波器的切换时序。
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