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1. 发明专利

JPH0972846A FLAME ATOMIC ABSORPTION PHOTOMETER AND FLAME ATOMIC ABSORPTION ANALYTICAL METHOD 失效
公开(公告)号：JPH0972846A
公开(公告)日：1997-03-18
申请号：JP22893995
申请日：1995-09-06
申请人： HITACHI LTD
发明人： HIRANO YOSHIHIRO , KUROISHI TADAFUMI
IPC分类号： G01N21/31
摘要： PROBLEM TO BE SOLVED: To provide a flame atomic absorption photometer and a flame atomic absorption analytical method in which a target element of higher concentration can be measured precisely even when a background correction by utilizing the Zeeman effect is performed by applying a magnetic field to a sample. SOLUTION: A flat boardlike flame 2 is formed at a burner head 1 by a gas from a burner chamber 8. A permanent magnet 6 is installed in such a way that an S-pole 6a, an N-pole 6b and the flame 2 are faced in parallel by sandwiching both faces of the flame 2, and a rectlinear passage 7 which passes both poles is formed in the permanent magnet 6. The axis of the passage 7 is crossed with the face of the flat boardlike flame 2 at an angle θ. In addition, a rotation mechanism 6A which turns the permanent magnet 6, the burner head 1 and the burner chamber 8 inside a horizontal plane is installed. Analysis light 3s from a light source 3 is introduced into the passage 7, it is passed through the flat boardlike flame 2, it is passed through a spectroscope 4, and it is incident on a detector 5.

2. 发明专利

JPH01202657A ANALYSIS OF TOTAL CERIUM ION CONTENT 失效
公开(公告)号：JPH01202657A
公开(公告)日：1989-08-15
申请号：JP2565988
申请日：1988-02-08
申请人： HITACHI LTD
发明人： TAKADA YOSHITADA , MAEKOYA CHIAKI , KUROISHI TADAFUMI
IPC分类号： G01N30/88 , C01F17/00 , G01N30/06
摘要： PURPOSE:To simplify a total analysis of cerium ions, by converting cerium in a sample into trivalence to separate before the sample reaches a separation column after injected into a device. CONSTITUTION:Tetravalent cerium ions contained in a sample, whose main components in an eluate 1 are injected at a sample injection port 3 of a liquid chromatography, are reduced to trivalence and then, the sample is introduced into a separation column 6. Then, with the column 6, the cerium ions are separat ed form other trivalent rare earth metal ions in the form of trivalent cerium ions and cerium ions are totally analyzed via a detector 7. Here, since relatively stable components chemically are slow in reaction at a room temperature, they are heated with a heater 5 to be converted into trivalence when the sample is mixed into an eluate 1 before being introduced to the column 6. This enables an analysis on the total amont of cerium ions without a pretreatment intended to unify the valence of cerium ions in a sample solution to trivalence prior to the injection of the sample into the device.

3. 发明专利

JPH0131583B2 失效
公开(公告)号：JPH0131583B2
公开(公告)日：1989-06-27
申请号：JP14952281
申请日：1981-09-24
申请人： HITACHI LTD
发明人： KUROISHI TADAFUMI , YASUDA KAZUO
IPC分类号： G01N21/77 , G01N21/31 , G01N21/75 , G01N21/85

4. 发明专利

JPS61275662A CONTINUOUS FLOW ANALYSIS 失效
公开(公告)号：JPS61275662A
公开(公告)日：1986-12-05
申请号：JP11644885
申请日：1985-05-31
申请人： HITACHI LTD , HITACHI INSTRUMENTS ENG
发明人： DEGUCHI KISABURO , KUROISHI TADAFUMI , YOSHIDA KASUMI
IPC分类号： G01N35/08
摘要： PURPOSE:To improve the sensitivity of a continuous flow analysis by introducing alternately a reagent and sample sandwiched by foam into a sample loop and annihilating the foam at the same instant when the sample is introduced into carrier flow by a selector valve. CONSTITUTION:A carrier liquid 1 is pumped 2 into a 'Teflon(R)' tube 3. A specified amt. of the sample 12 and reagent 11 fed preliminarily into the sample loop is introduced into the flow of the liquid 1 by the 6-way selector valve 4 in the mid-way. The mixing and reaction arise during the time when the sample and reagent flow in a reaction tube 9 kept at the specified temp. by a thermostatic chamber 8. The resultant reaction product is quantitatively determined by a detector 10. The sample 12 and the reagent 11 are fed at the specified flow rate to a 4-way solenoid valve 15 by utilizing a gaseous N2 cylinder pressure in the above-mentioned constitution. The sample is introduced into the sample loop in such a state and when the sample is fed by the valve 4 into the flow passage, the foam is annihilated by the longitudinal diffusion by the back pressure. The time for mixing by the longitudinal diffusion is thus reduced.

5. 发明专利

JPS6146233A Stabilizing apparatus of mixing ratio 失效
标题翻译：混合比稳定装置
公开(公告)号：JPS6146233A
公开(公告)日：1986-03-06
申请号：JP16785584
申请日：1984-08-13
申请人： Hitachi Ltd
发明人： UCHIKI HIDEO , KUROISHI TADAFUMI
IPC分类号： B01F15/04 , B01F15/00 , G01N1/36
CPC分类号： B01F15/00
摘要： PURPOSE:To homogenize the mixing ratio of two liquid fed to a joining part by partitioning the inside of a damper in which two kinds of liquid are introduced with an elastic diaphragm and bringing the two kinds of liquid into contact with each other via the diaphragm. CONSTITUTION:Liquids A, B fed to the pipelines 3, 4 from the vessels 1, 2 have different pulsating flows by means of the characteristics of pumps 5, 6. When the liquids A, B are fed into two chambers 7a, 7b which are partitioned by an elastic diaphragm 8 incorporated in a damper 7, the variation of pressure of one hand is immediately transferred to the other hand because the diaphragm 8 is freely moved. Thereby, the pressure variation of the liquid A, B in the outlets 9, 10 of the damper chamber is made to the same phase. Therefore, two liquid flowing into a joining part 11 are fluctuated in the flow rate but introduced into a detector 13 from a discharge port 12 in a specified ratio with the stable mixing ratio. By this mechanism, the output from the detector 13 for flow injection analysis or the like, especially the stability of base line is improved.
摘要翻译：目的：通过将其中引入两种液体的阻尼器的内部与弹性隔膜分开并使两种液体经由隔膜彼此接触来均匀化供给到接合部分的两种液体的混合比。构成：通过泵5,6的特性，从容器1,2供给到管道3,4的液体A，B具有不同的脉动流。当液体A，B被供给到两个室7a，7b中时，它们是由装在阻尼器7中的弹性膜片8分隔开，因为隔膜8自由移动，所以一方面的压力变化立即转移到另一只手。由此，阻尼室的出口9,10中的液体A，B的压力变化成为相同的相位。因此，流入接合部11的两个液体以流量波动，而以稳定的混合比从规定的比例从排出口12引入检测器13。通过这种机制，提高了用于流动注射分析等的检测器13的输出，特别是基线的稳定性。

6. 发明专利

JPS6067861A ANALYSIS OF CONTINUOUS STREAM 失效
公开(公告)号：JPS6067861A
公开(公告)日：1985-04-18
申请号：JP17621583
申请日：1983-09-26
申请人： HITACHI LTD
发明人： KUROISHI TADAFUMI , UCHIKI HIDEO , AIDA JIYUNKO
IPC分类号： G01N35/08
摘要： PURPOSE:To perform accurate analysis without receiving the influence of a ghost peak, by mixing a reagent or a specimen into the stream of a carrier liquid at a place where the timewise concn. distribution of the specimen or the reagent in said stream is almost constant. CONSTITUTION:The inner volumes of specimen loops 5a, 5b and a reagent loop 6 are preliminarily selected so that the timewise concn. distributions of the specimen and the reagent in the stream of the carrier liquid 1 in a flow cell 8 are respectively present on curves 9, 10 when the specimen and the reagent are simultaneously added into the stream of the carrier liquid 1 by changing over a change-over valve 4 and a thus determined amount of the specimen and the reagent are simultaneously added into the stream of the carrier liquid 1 so as to timewise differentiate the position where a ghost peak 12 is generated and the position where a signal 13 due to a reaction product is generated.

7. 发明专利

JPS51128058A THERMOSTAT AS CLINICAL TESTING APPARATUS 失效
公开(公告)号：JPS51128058A
公开(公告)日：1976-11-08
申请号：JP5132275
申请日：1975-04-30
申请人： HITACHI LTD
发明人： SHIMIZU MIKIO , MOTOKAWA TADASHI , SUZUKI HARUHISA , KUROISHI TADAFUMI
IPC分类号： G12B7/00
摘要： PURPOSE:ATo provide a mechanism that can readily place a plurality of test objects under control individually at a constant temperature during a certain period of time.

8. 发明专利

JPH08122258A NITRIC ACID ION ANALYZER 失效
公开(公告)号：JPH08122258A
公开(公告)日：1996-05-17
申请号：JP25784994
申请日：1994-10-24
申请人： HITACHI LTD
发明人： KUNIMATSU MIYUKI , KUROISHI TADAFUMI , IWAMURA NAOMI , MAEKOYA CHIAKI
IPC分类号： G01N31/00 , G01N21/77 , G01N35/08
摘要： PURPOSE: To reduce labor in analytical operation, and reduce analytical cost by contacting a sample solution with a reducing column while sucking and delivering the sample solution and a reacting liquid, and automatically analyzing both a nitric acid ion and a nitrous acid ion. CONSTITUTION: The passage of a passage switching valve 9 is put on the reducing column 11 side, and the passage of a three-way valve 10a is put on the needle 5 side, and the needle 5 is put in a sample solution in a sample solution vessel 6a, and sucks a fixed quantity. The sucked sample solution is passed through the inside of the column 11. Next, the needle 5 is put in a sample solution vessel 6b, and delivers the sample solution after reduction, and it is moved to a needle cleaning port 3, and the outside of the needle 5 is cleaned. Next, the needle 5 is put in a reacting liquid in a reactor vessel 7, and sucks a fixed quantity, and is put in the vessel 6b, and delivers the reacting liquid, and it is reacted with the sample solution after reduction. After the outside of the needle 5 is cleaned, it is put in the vessel 6b, and sucks a reaction product. The sucked reaction product is delivered to the flow cell 2 of a detector 1, and the concentration is calculated from signal strength, and it is outputted.

9. 发明专利

JPH07318484A OPTICAL SYSTEM FOR SPECTROPHOTOMETER 失效
公开(公告)号：JPH07318484A
公开(公告)日：1995-12-08
申请号：JP11071794
申请日：1994-05-25
申请人： HITACHI LTD
发明人： KUROISHI TADAFUMI
IPC分类号： G01N21/27
摘要： PURPOSE:To provide a device having two kinds of functions by a single device by providing both functions of a double monochromatic double beam spectrophotometer and a single monochromatic dual channel spectrophotometer by switching mirrors, a shutter or the like. CONSTITUTION:Light of a light source 4a or 4b is introduced to a spectroscope 1 by a mirror 5 and a sector mirror 6a, and the light separated into its spectral components is introduced to a spectroscope 2. Thereby, monochromatic light hardly containing stray light is obtained, and is divided into two light fluxes of the sample side and the contact side by a sector mirror 6c. A sample for measurement or a sample vessel 24 is set in these two optical paths, and absorbance of the sample, transmissivity or the like are measured. The two light fluxes are again condensed as a single light flux by a sector mirror 6d, and enters a detector 25. The above is an optical system of an ordinary double monochromatic double beam spectrophotometer. In this optical system, the sector mirrors 6a to 6d are formed as a rotatable mirror 6, and a fixed mirror 7 and switching mirrors 8 and 11 are beforehand added.

10. 发明专利

JPH07260796A AUTOMATIC ANALYZING DEVICE 失效
公开(公告)号：JPH07260796A
公开(公告)日：1995-10-13
申请号：JP4858294
申请日：1994-03-18
申请人： HITACHI LTD
发明人： KUNIMATSU MIYUKI , KUROISHI TADAFUMI , HARADA KOSAKU , SETSU YASUAKI , IMAI KAZUNARI , TSUKADA KATSUO , MAEKOYA CHIAKI
IPC分类号： G01N33/18 , G01N30/86 , G01N30/88 , G01N35/08
摘要： PURPOSE:To provide an automatic anglyzing device having hying determining components similar in chemical properties and a function of separating individual chemical seeds to determine them and to achieve the labor-saving of analytical operation and the simplification of an analytical system. CONSTITUTION:A flow injection analytical method capable of performing the quantitative analysis of a cyan compd. within a short time and ion chromatograph/post-column absorptiometery capable of performing separative determination can be adapted only by the changeover operation of a changeover valve 9. When the concn. of the cyan compd. in sample water becomes a set value or more, the judgment of concn. is performed by a control part 12 and a chromatographic mode is selected by changing over the changeover valve to perform separative determination. By this constitution, the consumption of an eluent and a reaction soln. is reduced and the deterioration of a separation column is minimized and the analysis of the cyan compd. is accelerated.

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