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1. 发明专利

JPH0921731A METHOD FOR PRESERVING HYDRAZINE STANDARD LIQUID 失效
公开(公告)号：JPH0921731A
公开(公告)日：1997-01-21
申请号：JP19579595
申请日：1995-07-06
申请人： TOKYO ELECTRIC POWER CO , HORIBA LTD
发明人： TAKEMATA JIYUNJI , SUZUKI KOICHI , KONO KOJI , MIYATO MASAHIRO , MATSUNOSHITA MAKOTO , SUGATSUTA KINYA , ICHIHARA HIROYASU , OKAWA TETSUYA , ISHII TOSHINORI , ISHIKAWA TOMOKO , ASHIKAGA KAZUHIKO , FUKUSHIMA RYOSUKE
IPC分类号： G01N1/00
摘要： PROBLEM TO BE SOLVED: To obtain a method for preserving hydrazine standard liquid for a long term without causing any chemical variation or variation of concentration. SOLUTION: A hydrazine standard liquid 8 conditioned to a specified concentration is contained in a glass or plastic container 10 exhibiting low transmittance to UV-rays. After oxygen is purged by an inert gas 11, the container 10 is sealed completely.

2. 发明专利

JP2513533B2 失效
公开(公告)号：JP2513533B2
公开(公告)日：1996-07-03
申请号：JP33320290
申请日：1990-11-28
申请人： HORIBA LTD
发明人： MATSUMOTO HIROO , ASHIKAGA KAZUHIKO , HORII YOSHIO
IPC分类号： G01N33/18 , C02F1/00

3. 发明专利

JPH07318531A AMMONIUM ION ELIMINATOR 失效
公开(公告)号：JPH07318531A
公开(公告)日：1995-12-08
申请号：JP13127294
申请日：1994-05-21
申请人： HORIBA LTD
发明人： ASHIKAGA KAZUHIKO
IPC分类号： G01N1/36 , G01N27/28 , G01N27/416
摘要： PURPOSE:To eliminate NH 4 effectively by adding an alkalization agent to set the pH of a sample water at a specified value or above thereby accelerating the reaction of NH 4 NH3 and purging NH3 through bubbling of N2. CONSTITUTION:An ON/OFF valve 2 is opened to introduce a sample water into a reaction chamber 3 and then an alkalization agent is added from a storage tank 9 to the sample water by operating a pump 10 thus conditioning the pH of the sample water to 12 or above. At the same time, N2 gas is introduced into the sample water from a bubbler 5 through a supply line 6 and the sample water is stirred to mix the sample water and the alkalization agent uniformly thus accelerating the reaction NH 4 -NH3 and purging NH3 from the sample water. After removing NH 4 sufficiently from the sample water, the sample water overflowed into an overflow tank 31 is introduced to a sodium ion(Na ) measuring unit 13 where Na is detected accurately.

4. 发明专利

JPH0980008A METHOD AND DEVICE FOR REGULATING PH 失效
公开(公告)号：JPH0980008A
公开(公告)日：1997-03-28
申请号：JP26224195
申请日：1995-09-15
申请人： HORIBA LTD
发明人： ASHIKAGA KAZUHIKO , YONEZAWA HIYOUSUKE
IPC分类号： G01N1/10 , G01N1/36 , G01N27/26 , G01N27/416 , G01N33/18
摘要： PROBLEM TO BE SOLVED: To provide a method and device for regulating pH by which the pH of a sample water can be regulated without allowing a contaminant contained in a pH regulator to get out of the regulator and to be mixed with the sample water. SOLUTION: The pH of sample water 12 in a measurement cell 11 is regulated by supplying air or a nitrogen gas to a container 6 containing an easily vaporized pH regulator 5 with pressure and introducing the air or nitrogen gas carrying the regulator 5 vaporized in the container 6 to the sample water 12.

5. 发明专利

JPH08304324A METHOD FOR CORRECTING BASE CONCENTRATION OF SAMPLE WATER 失效
公开(公告)号：JPH08304324A
公开(公告)日：1996-11-22
申请号：JP12928095
申请日：1995-04-29
申请人： HORIBA LTD
发明人： ASHIKAGA KAZUHIKO
IPC分类号： G01N27/26 , G01N27/416
摘要： PURPOSE: To perform a calibration without error at low cost regardless of the base concentration of a sample water by correcting the base concentration of the sample water with a specified expression. CONSTITUTION: A reference solution 8 is first added to a sample water to carry a calibration solution to an analyzer, and when the indicated value is stabilized the electromotive force of a sensor 1 in the calibration solution is fitted to a calibration concentration A determined by the diluting ratio of the sample water quantity to the reference solution regardless of the base concentration X of the sample water. The sample water is then measured to read the electromotive force of the sample water, a calibration curve is formed according to the Nernst's expression, and the sample water concentration C is determined from this calibration curve. The sample water concentration C is substituted in the expression X=(A×C)/(A-C) to calculate the sample water concentration X. In the expression, A is the calibration concentration, C is the appearant concentration of the sample water, and X is the true concentration of the sample water. The sample water concentration X is added to the calibration concentration to correct the calibration curve. The above operation is performed by the arithmetic processing by a microcomputer 4.

6. 发明专利

JPH06222052A ALARMING/DETECTING METHOD FOR AUTOMATIC COD MEASURING INSTRUMENT 失效
公开(公告)号：JPH06222052A
公开(公告)日：1994-08-12
申请号：JP2723493
申请日：1993-01-23
申请人： HORIBA LTD
发明人： ASHIKAGA KAZUHIKO
IPC分类号： C02F1/00 , G01N33/18
摘要： PURPOSE:To provide an alarming/detecting method for automatic COD measuring instrument in which a decision can be made whether the reactive conditions are normal during measuring process while preventing damage of the measuring instrument from spreading. CONSTITUTION:When a sample water and reactive reagents A, B, C are mixed to react each other while heating in the reaction chamber 2 of an automatic COD measuring instrument M, a temperature detector 1 is disposed in the reaction chamber 2 the temperature thereof being monitored constantly. A temperature pattern P for normal measuring process is prestored in microcomputors 14, 15 which perform self-diagnosis to monitor reactive conditions during measuring process.

7. 发明专利

JPH09127098A PH ADJUSTING METHOD FOR SAMPLE WATER 失效
公开(公告)号：JPH09127098A
公开(公告)日：1997-05-16
申请号：JP30199995
申请日：1995-10-26
申请人： HORIBA LTD
发明人： ASHIKAGA KAZUHIKO
IPC分类号： G01N31/00 , G01N1/00 , G01N1/36 , G01N33/18
摘要： PROBLEM TO BE SOLVED: To obtain a pH adjusting method in which the pH of sample water can be adjusted stably by heating a liquid pH adjusting reagent to be gaseous and dissolving the gaseous reagent in the sample water so as to prevent interference ions or the like from being introduced into the sample water. SOLUTION: A pH adjusting reagent R inside a container 16 is sucked up by the capillary phenomenon of a porous sucking-up member 19, it is guided to the upper-end side 19a of the member 19 inside a gasifying chamber 22, and changed to be gaseous so as to be made to transpire inside the gasifying chamber 22 from the upper-end side 19a. A transpired gaseous pH adjusting reagent G is introduced into a pH adjusting chamber 6 together with the air A via a gaseous-reagent flow passage 24. Sample water S in a prescribed quantity is supplied to the adjusting chamber 6 via a sample-water supply passage 7, the gaseous reagent G which is introduced into the adjusting chamber 6 is dissolved in the sample water S, and the sample water S is adjusted so as to become a prescribed pH. When the pH-adjusted sample water S flows inside a measuring cell 5, a prescribed analytical operation is performed.

8. 发明专利

JPH0783805A METHOD FOR SUPPLYING ZERO WATER FOR FAR ULTRAVIOLET RAY ABSORBANCE METER 失效
公开(公告)号：JPH0783805A
公开(公告)日：1995-03-31
申请号：JP25000793
申请日：1993-09-11
申请人： HORIBA LTD
发明人： FUKUSHIMA RYOSUKE , ASHIKAGA KAZUHIKO , TSUTSUI TATSUHIDE , AKIYAMA SHIGEYUKI
IPC分类号： B01J4/00 , B01J47/04 , C02F1/42 , G01N1/00 , G01N21/33
摘要： PURPOSE:To eliminate the staying of an eluted measurement interfering component caused at the time of stopping pure water, and prevent lowering of purifying function by forming a circulating line passed through an ion exchange pure water generator, and supplying the pure water extracted from this line to a far ultraviolet ray absorbance meter as zero water. CONSTITUTION:A circulating line in which one end is connected to the discharge hole 10a of an original water tank 10, and the other end reaches the water receiving hole 10b of the tank 10 through an ion exchange pure water generator 1 is formed. In this line 12, a branched line 12 branched on the lower stream side of a 5-mum filter 15 and connected to a wash water inlet port 4a communicating with the wash water tank of a far ultraviolet ray absorptiometer from a branching point B is formed. Since the tap water introduced into the tank 10 is discharged by a pump 13 after operation is started, purified by the generator 1, and then refluxed again to the tank 10, the purity of the raw water in the tank 10 is increased. Thus, since the purity of the water introduced into the generator 1 is also enhanced, the reduction in purifying function of the generator 1 is prevented to extend the life, and economic property is improved.

9. 发明专利

JPH07706A PURIFYING AND REGENERATING METHOD FOR SOLVENT FOR OIL COMPONENT EXTRACTION 失效
公开(公告)号：JPH07706A
公开(公告)日：1995-01-06
申请号：JP8545894
申请日：1994-03-30
申请人： HORIBA LTD
发明人： SHINOHARA MASAYOSHI , ASHIKAGA KAZUHIKO , NISHIYAMA NOBUYUKI , ISHIKAWA SUMIYO
IPC分类号： B01D15/00
摘要： PURPOSE:To provide a method for removing hydrocarbon capable of corresponding to the change in the solvent between production lots by purifying chlorofluorocarbon only by adjusting zero point without optically adjusting a measuring apparatus for oil concentration in water and to provide a regenerating method capable of regenerating chlorofluorocarbon used for extracting the oil component to a purified solvent. CONSTITUTION:Purified chlorofluorocarbon is obtained from each unpurified chlorofluorocarbons different in hydrocarbon content by purifying the chlorfluorocarbon S by allowing it to pass through a glass made column 3 pacred with active alumina and stoppered 2 with cotton or quartz wool.

10. 发明专利

JPH04198754A WATER QUALITY MEASURING DEVICE 失效
公开(公告)号：JPH04198754A
公开(公告)日：1992-07-20
申请号：JP33320290
申请日：1990-11-28
申请人： HORIBA LTD
发明人： MATSUMOTO HIROO , ASHIKAGA KAZUHIKO , HORII YOSHIO
IPC分类号： G01N33/18 , C02F1/00
摘要： PURPOSE:To measure the water quality invariably precisely and prevent the breakage of a sensor section due to cleaning by providing a dip type sensor formed with the sensor section at the end section horizontally or in the inclined state on a liftable holder base. CONSTITUTION:A dip type sensor 18 formed with a sensor section 17 at the end section is provided horizontally or in the inclined state on a holder base 13 liftable along a guide member 8 provided in the vertical direction. Bubbles and foreign objects contained in the waste water of a sample are hardly stuck to the sensor section 17, even if they are stuck, they are immediately removed from the sensor section 17, and the preset measurement can be performed invariably precisely. When air is sprayed to the sensor section 17 from a nozzle 21, the air is sprayed to pass the front of the sensor section 17 for the preset cleaning, thus fine solids contained in the sample are prevented from directly striking the sensor section 17 to break it.

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