公开(公告)号：US5035505A

公开(公告)日：1991-07-30

申请号：US557647

申请日：1990-07-25

申请人： Masamichi Tsukada ,  Hayato Tobe

发明人： Masamichi Tsukada ,  Hayato Tobe

IPC分类号： G01N21/31 ,  G01N21/74

CPC分类号： G01N21/74 ,  G01N2021/3111 ,  G01N2021/3114 ,  G01N2021/3129 ,  G01N2201/0666

摘要： An atomic absorption spectroscopy photometer comprising: sample atomizing means for heating to atomize a sample; a plurality of light sources disposed at a like number of light flux incidence positions for causing light having required wavelengths to enter the atomized sample; means for measuring the degrees of light absorption of a plurality of elements contained in the sample by detecting the fluxes of light which have passed through the atomized sample; a plurality of holder means for holding the plurality of light sources, the plurality of light sources being larger in number than the plurality of the light flux incidence positions; and means for setting required ones of the light sources of the plurality at the corresponding light flux incidence positions by moving the holder means.

公开(公告)号：US5130537A

公开(公告)日：1992-07-14

申请号：US674407

申请日：1991-03-25

申请人： Yukio Okamoto ,  Takashi Iino ,  Satoshi Shimura ,  Masamichi Tsukada ,  Hiromi Yamashita ,  Masatoshi Kitagawa

发明人： Yukio Okamoto ,  Takashi Iino ,  Satoshi Shimura ,  Masamichi Tsukada ,  Hiromi Yamashita ,  Masatoshi Kitagawa

IPC分类号： G01N27/62 ,  G01N21/73 ,  H01J49/04

CPC分类号： G01N21/73

摘要： A plasma analyzer for trace element analysis has a gas supply system comprising a plurality of gas sources, an electromagnetic valve provided on a line connecting each gas source to a plasma generating space, a buffer tank provided after the electromagnetic valve on the line, and a flow regulating flowmeter provided after the buffer tank on the line. Each electromagnetic valves is controlled for on-off operation and the corresponding buffer tank suppresses the sudden change of the flow rate of the corresponding gas, so that the composition of the gas supplied to the plasma generating space changes gradually in spite of the simple on-off operation of the electromagnetic valves. Thus, the fluctuation and extinction of the plasma attributable to the sudden change of the composition of the gas supplied to the plasma generating space can be effectively prevented.

摘要翻译： 一种用于微量元素分析的等离子体分析器具有包括多个气体源的气体供给系统，设置在将每个气体源连接到等离子体产生空间的线路上的电磁阀，设置在该线路上的电磁阀之后的缓冲罐，以及 流量调节流量计提供在缓冲罐上的线路上。 每个电磁阀被控制为开 - 关操作，并且相应的缓冲罐抑制相应气体的流量的突然变化，使得提供给等离子体产生空间的气体的组成逐渐变化， 关闭电磁阀的操作。 因此，可以有效地防止由于供给到等离子体产生空间的气体的组成突然变化引起的等离子体的波动和消光。

公开(公告)号：USD307398S

公开(公告)日：1990-04-24

申请号：US70536

申请日：1987-07-07

申请人： Shouji Umemoto ,  Masamichi Tsukada ,  Masatoshi Kitagawa

设计人： Shouji Umemoto ,  Masamichi Tsukada ,  Masatoshi Kitagawa

公开(公告)号：US06423965B1

公开(公告)日：2002-07-23

申请号：US09378767

申请日：1999-08-23

申请人： Yuichiro Hashimoto ,  Takayuki Nabeshima ,  Yasuaki Takada ,  Minoru Sakairi ,  Masamichi Tsukada

发明人： Yuichiro Hashimoto ,  Takayuki Nabeshima ,  Yasuaki Takada ,  Minoru Sakairi ,  Masamichi Tsukada

IPC分类号： H01J4900

CPC分类号： H01J49/04

摘要： Plasma ion source mass spectrometers or liquid chromatograph/mass spectrometers are provided: wherein photon noises and matrix molecule ions produced by the ion source are decreased, the decrease of the quantity of signal is suppressed, and the apparatus maintenance is improved. The photon noises are decreased with a shielding plate and a 90 degrees deflector. The maintainability in cleaning is improved by a combination of a leading electrode, the shielding plate having a small hole, and a gate valve. The decrease in the quantity of signal is suppressed with the leading electrode, and a double cylindrical type static lens. Position adjustment of the leading electrode is performed with a flat plate having plural holes. Using an ion trap mass analyzer, matrix molecule ions are eliminated by applying a resonance voltage between its end cap electrodes. Decrease in the quantity of signals, which has been a problem, can be prevented, and a high transmission can be realized with a preferable reproducibility against disturbance of an electric field caused by ion lens and the like. A detectable limit of atomic ions of the sample can be improved by eliminating the matrix molecule ions.

摘要翻译： 提供了等离子体离子源质谱仪或液相色谱仪/质谱仪：其中由离子源产生的光子噪声和基质分子离子减少，抑制了信号量的减少，从而改善了设备的维护。 光子噪声随屏蔽板和90度偏转器而减小。 通过前导电极，具有小孔的屏蔽板和闸阀的组合来提高清洁的可维护性。 用前导电极和双圆柱形静电透镜抑制信号量的减少。 引导电极的位置调整用具有多个孔的平板进行。 使用离子阱质量分析仪，通过在其端盖电极之间施加谐振电压来消除基质分子离子。 可以防止已经存在问题的信号量的减少，并且以离子透镜等引起的电场干扰的优选再现性可以实现高透射率。 可以通过消除基质分子离子来改善样品的原子离子的可检测极限。

公开(公告)号：US4553840A

公开(公告)日：1985-11-19

申请号：US442113

申请日：1982-11-16

申请人： Taro Nogami ,  Masamichi Tsukada

发明人： Taro Nogami ,  Masamichi Tsukada

IPC分类号： G01J3/18

CPC分类号： G01J3/18 ,  G01J2003/1814

摘要： A double monochrometer comprises a main monochrometer including a plane grating and an auxiliary monochrometer including a concave grating. The concave grating is disposed on the entrance or exit optical axis of the main monochrometer. Preferably, the angular dispersion of the concave grating is selected to be smaller than that of the plane grating. Sine bars for rotating the concave and plane gratings for wavelength scanning can be driven by means of a single feed screw mechanism even if the lengths of the sine bars are made different from each other in accordance with a difference in angular dispersion between the concave and plane gratings.

摘要翻译： 双色单色仪包括包括平面光栅的主单色仪和包括凹光栅的辅助单色仪。 凹形光栅设置在主单色仪的入口或出射光轴上。 优选地，凹面光栅的角度色散被选择为小于平面光栅的角度色散。 用于旋转用于波长扫描的凹面和平面光栅的正弦棒可以通过单个进给螺杆机构来驱动，即使正弦棒的长度根据凹面和平面之间的角分散的差异而彼此不同 光栅。