WO2015045869A1 - 分析装置及び分析方法 - Google Patents
分析装置及び分析方法 Download PDFInfo
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- WO2015045869A1 WO2015045869A1 PCT/JP2014/073903 JP2014073903W WO2015045869A1 WO 2015045869 A1 WO2015045869 A1 WO 2015045869A1 JP 2014073903 W JP2014073903 W JP 2014073903W WO 2015045869 A1 WO2015045869 A1 WO 2015045869A1
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- sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0042—SO2 or SO3
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
Definitions
- the present invention relates to an analyzer and analysis method such as an element analyzer for analyzing elements such as carbon (C) and sulfur (S) contained in a sample such as steel, non-ferrous metal, and ceramics.
- an element analyzer for analyzing elements such as carbon (C) and sulfur (S) contained in a sample such as steel, non-ferrous metal, and ceramics.
- This kind of elemental analyzer installs a crucible containing a sample in a heating furnace, applies a high-frequency AC voltage to a coil provided around the crucible, and heats the sample in the crucible by high-frequency induction heating for combustion. And the element contained in the sample is analyzed from the gas generated thereby.
- Patent Document 1 in the above-described elemental analyzer, a combustion aid is used to promote the combustion of the sample.
- the auxiliary combustor contains tungsten, which is a rare metal, and the use of the auxiliary combustor causes a problem that the running cost for analysis becomes high.
- the present invention has been made to solve the above-mentioned problems, and its main subject is to efficiently heat and burn a sample without using a combustion aid.
- the analyzer comprises an induction current generating mechanism for generating an induced current due to electromagnetic induction in the sample and a laser in the sample in the analyzer for analyzing the gas generated by heating the sample in the sample container. And a laser irradiation mechanism for irradiating light, wherein the induced current generation mechanism and the laser irradiation mechanism act on the sample simultaneously.
- the analysis method according to the present invention is an analysis method in which a sample is heated in a sample container and the gas generated thereby is analyzed.
- An induced current generation mechanism for generating an induced current due to electromagnetic induction in the sample, and the sample The sample is heated by simultaneously operating a laser irradiation mechanism for irradiating laser light.
- the sample is heated by simultaneously operating the induction current generation mechanism and the laser irradiation mechanism, the sample is more efficiently compared with the case where the sample is heated only by high-frequency induction heating as in the past. It can be heated to promote combustion and does not require the use of a combustor. If no auxiliary combustor is used, no dust due to the auxiliary combustor is generated, so there is no need to provide a dust suction mechanism, and no measurement error due to gas adhering to the dust does not occur.
- the reason why the sample can be efficiently heated by simultaneously acting the induced current generation mechanism and the laser irradiation mechanism in this manner is that the portion irradiated with the laser is locally dissolved, and this dissolved portion is electromagnetically This is considered to be because the whole sample is easily dissolved by stirring by induction and promoting dissolution of other parts.
- the analyzer further includes a flow path forming member in which a supply flow path for supplying oxygen is formed in the sample container, and a transmission window that transmits the laser light is formed in the flow path forming member. It is preferable that the optical path of the laser beam that has passed through the transmission window is formed in the supply flow path along the flow path direction of the supply flow path.
- the existing supply flow path can be used also as the optical path of the laser light, and the configuration of the apparatus becomes complicated. There is nothing.
- oxygen is supplied from the supply channel into the sample container, dust, high-temperature gas, etc. generated in the sample container are unlikely to enter the supply channel, and the permeation window can be prevented from becoming dirty or damaged. it can.
- the supply flow path has a linear flow path having one end opened toward the sample and the other end formed with the transmission window.
- the laser beam is reliably irradiated to the sample through the transmission window formed at the other end, and oxygen is directed toward the sample. It can be sprayed, and the combustion of the sample can be promoted more, and the auxiliary combustor can be made unnecessary. Further, since the laser beam is irradiated onto the sample through the linear flow path, the laser beam that has passed through the transmission window can be directly guided to the sample without using an optical component such as a mirror.
- the sample can be efficiently heated and burned without using a combustion aid.
- the figure which shows typically the structure of the elemental analyzer of this embodiment The functional block diagram which shows the function of the control apparatus of the embodiment.
- the elemental analysis apparatus 100 heats and burns a sample X such as metal and burns the element X such as carbon (C) and sulfur (S) contained in the sample X from the gas generated thereby. To analyze.
- the elemental analyzer 100 includes a heating furnace 2 that is a sample storage unit in which a crucible 1 in which a sample X is stored is installed, and a gas that analyzes gas generated by combustion of the sample X
- An analyzer 3 an oxygen supply mechanism 4 for supplying oxygen into the heating furnace 2, an induction current generating mechanism (induction heating mechanism) 5 for generating induction current by electromagnetic induction in the sample X in the crucible 1 and induction heating;
- a laser irradiation mechanism (laser heating mechanism) 6 that irradiates the sample X with laser light and heats the sample X, and an oxygen supply mechanism 4, an induction heating mechanism 5, and a control device 7 that controls operations of the laser heating mechanism 6. It comprises.
- the crucible 1 accommodates the sample X inside and is attached to the installation base 8.
- the crucible 1 is made of a magnetic material such as a ceramic having a conductive heating element.
- the installation table 8 is moved up and down between a heating position where the sample X in the crucible 1 is heated in the heating furnace 2 and an attachment / detachment position where the crucible 1 is attached to and detached from the installation table 8 by a cylinder mechanism (not shown). It is configured as follows.
- the heating furnace 2 is configured to burn the sample X inside and guide the gas generated thereby to the gas analyzer 3, and is formed in a substantially cylindrical furnace body 21 and a side wall 211 of the furnace body 21.
- the gas outflow path 22 for guiding the gas to the gas analyzer 3 and the filter 23 provided along the inner periphery of the side wall 211 in the furnace main body 21 are provided.
- the filter 23 of the present embodiment is provided slightly spaced from the inlet 221 of the gas outflow passage 22 toward the tube axis of the furnace body 21, and the sample X burns in the crucible 1.
- the generated gas is configured to flow to the gas outflow path 22 through the filter 23.
- the gas analyzer 3 analyzes the gas introduced to the gas analyzer 3 through the gas outflow path 22 to obtain the content of each component contained in the sample X.
- Analysis is performed using a non-dispersive infrared absorption method (NDIR method).
- the gas analyzer 3 has a non-dispersed infrared detector (not shown), and detects carbon (C) contained in the sample X by detecting CO 2 , CO, SO 2 and the like contained in the gas. ) And sulfur (S) content.
- the oxygen supply mechanism 4 supplies oxygen into the heating furnace 2, specifically, a flow path forming member 41 in which a supply flow path L for supplying oxygen into the heating furnace 2 is formed, and the supply An oxygen cylinder as an oxygen supply source 42 for feeding oxygen into the flow path L is provided.
- the flow path forming member 41 has a substantially block shape, and is attached to the upper surface 212 of the heating furnace 2 so as to supply oxygen flowing through the supply flow path L into the heating furnace 2. Furthermore, the flow path forming member 41 of the present embodiment is formed with a transmission window 411 that transmits laser light, and the transmission window 411 has a transparent flat plate shape in the present embodiment.
- the supply flow path L has one end opened toward the sample X in the crucible 1 and a linear first flow path L1 in which the transmission window 411 is formed at the other end, and one end is the first flow path L1.
- a second flow path L2 having a linear shape, for example, in which an inlet 41b for introducing oxygen from the oxygen supply source 42 is formed at the other end.
- the second flow path L2 is formed perpendicular to the first flow path L1, and oxygen supplied from the oxygen supply source 42 passes through the first flow path L1 via the second flow path L2. The air is directly sprayed toward the sample X through the opening 41a of the first flow path L1.
- the flow path forming member 41 is configured to be movable in a direction parallel to the flow path direction of the first flow path L1 by a drive unit (not shown), and the opening 41a of the first flow path L1 in the heating furnace 2 is configured. The height of the can be adjusted.
- a cleaning body such as a brush (not shown) is provided on the outer surface of the flow path forming member 41, and the inner surface of the filter 23 and the heating furnace 2 is moved by moving the flow path forming member 41 by the drive unit. It is configured so that it can be cleaned.
- the induction heating mechanism 5 is an induction current generating mechanism that generates an induction current in the sample X accommodated in the crucible 1 by high frequency induction heating. Specifically, a high frequency alternating voltage is applied to the coil 51 and the coil 51. And a power source 52 to be used.
- the coil 51 is provided along the outer periphery of the furnace body 21, and the installation base is set so that the crucible 1 is positioned inside the coil 51 when a high-frequency AC voltage is applied to the coil 51. A height of 8 is set.
- the conductive heating element included in the crucible 1 generates heat by high frequency induction heating, and the sample X in the crucible 1 is heated.
- the laser heating mechanism 6 is a laser irradiation mechanism that irradiates the sample X with laser light.
- the laser heating mechanism 6 includes a laser light source 61 that emits laser light.
- the laser light source 61 of the present embodiment is disposed above the furnace body 21 and emits laser light vertically toward the transmission window 411 of the flow path forming member 41 described above.
- the optical path B of the laser light that has passed through the transmission window 411 is the flow of the supply flow path L. It is formed in the supply flow path L along the road direction.
- the laser light that has passed through the transmission window 411 passes through the first flow path L1 along the flow path direction, passes through the heating furnace 2 from the opening 41a toward the sample X, and is directly irradiated to the sample X.
- a semiconductor laser capable of obtaining an output of 45 W to 200 W is used for the laser light source 61.
- the control device 7 is physically an electric circuit composed of, for example, a CPU, an internal memory, an AD converter, and the like, and functionally speaking, the CPU and its peripheral devices are in accordance with a program stored in the memory.
- the oxygen supply control unit 71, the induction heating control unit 72, and the laser heating control unit 73 are exhibited.
- the oxygen supply control unit 71 transmits a signal to the oxygen supply source 42 to adjust the pressure or flow rate of oxygen supplied from the oxygen supply source 42 through the supply flow path L into the heating furnace 2.
- the induction heating control unit 72 transmits a signal to the power source 52 and adjusts the output of the high-frequency AC voltage that the power source 52 applies to the coil 51.
- the laser heating control unit 73 transmits a signal to the laser light source 61 to adjust the output of the laser light emitted from the laser light source 61.
- the induction heating control unit 72 and the laser heating control unit 73 set the heating mechanisms 5 and 6 so that the induction heating mechanism 5 and the laser heating mechanism 6 simultaneously act on the sample X to heat them. It is something to control. That is, control is performed so that the state in which the induction heating mechanism 5 causes an induction current to flow through the sample X and the state in which the laser heating mechanism 6 irradiates the sample X with laser occur simultaneously. More specifically, the induction heating control unit 72 and the laser heating control unit 73 control the heating mechanisms 5 and 6 so that the sample X is heated by the induction heating mechanism 5 and the laser heating mechanism 6 at the same time. It is configured to continue for a predetermined time.
- the induction heating control unit 72 transmits a signal to the power source 52 and the laser heating control unit 73 transmits a signal to the laser light source 61 simultaneously.
- the induction heating control unit 72 performs control so that a high-frequency AC voltage is continuously applied from the power source 52 to the coil 51, for example, for 30 seconds, and the laser heating control unit 73 irradiates the sample X with laser light from the laser light source 61 for 30 seconds. Control to continue. Thereby, the sample X is simultaneously heated by the induction heating mechanism 5 and the laser heating mechanism 6 over 30 seconds.
- the heating time is not limited to 30 seconds and can be set to a desired time depending on the sample X.
- the induction heating mechanism 5 and the laser heating mechanism 6 simultaneously heat the sample X. Therefore, the sample X is efficiently heated to promote combustion. And there is no need to use a combustion aid. In addition, since it is not necessary to use a combustion aid, dust caused by the combustion aid does not occur, a dust suction mechanism is not required, and measurement errors due to adhesion of gas to the dust do not occur.
- the existing supply flow path L can also be used as the optical path B of the laser light, and the laser light can be used.
- the configuration for irradiating the sample X is not complicated.
- the transmission window 411 is formed on the opposite side of the opening 41a with respect to the first flow path L1, and oxygen is supplied into the heating furnace 2 from the opening 41a. It is possible to prevent dust from flowing back through the first flow path L1 and adhering to the transmission window 411.
- the drive part which is not shown in figure can move the flow-path formation member 41 and can adjust the height of the opening 41a of the 1st flow path L1 in the heating furnace 2, the supply speed which supplies oxygen to the sample X By controlling this, the combustion state of the sample X can be optimized.
- the present invention is not limited to the above embodiment.
- the induction heating mechanism and the laser heating mechanism transmit signals simultaneously to the power source and the laser light source, respectively, but they do not necessarily have to be at the same time, and have a certain time difference. It may be set to transmit a signal. In other words, if there is a period in which the heating by the induction heating mechanism and the heating by the laser heating mechanism are performed simultaneously, the heating start times by these mechanisms may not coincide with each other, and the heating end times may not coincide with each other. good.
- the transmission window is formed on the side opposite to the opening with respect to the first flow path.
- the transmission window 411 is oxygenated with respect to the second flow path L2.
- the laser beam that is formed on the side opposite to the supply source 42 and passes through the transmission window 411 may be reflected by using, for example, an optical member such as the reflection mirror 62 to irradiate the sample X.
- the coil was provided along the outer periphery of the furnace main body, the coil may be provided in the bottom part of the crucible or the upper surface of the installation base, for example.
- the carrier gas may flow into the heating furnace from below the heating furnace.
- the carrier gas include those containing oxygen.
- a combustion aid may be placed in the crucible to further promote the combustion of the sample.
- the supply flow path L of the above embodiment supplies oxygen into the sample storage section, but the supply flow path L supplies other gases (including oxygen-containing gas) in the sample storage section. It is good also as a structure which a laser passes through the said supply flow path L and irradiates a sample, and in addition to the supply flow path L which supplies oxygen in a sample accommodating part, other gas A configuration may be adopted in which a second supply flow path for supplying (containing oxygen-containing gas) into the sample storage portion is provided, and the sample is irradiated with the laser through the second supply flow path.
- the sample can be efficiently heated and burned without using a combustion aid while ensuring the workability at the time of calibration.
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Abstract
Description
また、本発明に係る分析方法は、試料収容部内で試料を加熱し、それにより生じるガスを分析する分析方法において、前記試料に電磁誘導による誘導電流を生じさせる誘導電流生成機構と、前記試料にレーザ光を照射するレーザ照射機構とを同時に作用させて、前記試料を加熱することを特徴とする。
このように誘導電流生成機構とレーザ照射機構とを同時に作用させることで効率良く試料を加熱することができる理由としては、レーザが照射された部分が局所的に溶解し、この溶解した部分が電磁誘導により撹拌されて、その他の部分の溶解を助長することにより、試料全体が溶けやすくなるからであると考えられる。
また、供給流路から試料収容部内に酸素を供給しているので、試料収容部内に生じたダストや高温ガス等は、供給流路内に進入しにくく、透過窓の汚れや破損を防ぐことができる。
また、レーザ光が直線状流路を通って試料に照射されるので、ミラー等の光学部品を使用することなく透過窓を通ったレーザ光を直接試料へ導くことができる。
X ・・・試料
1 ・・・るつぼ
2 ・・・加熱炉
3 ・・・ガス分析計
41 ・・・流路形成部材
411・・・透過窓
L ・・・供給流路
L1 ・・・第1流路(直線状流路)
L2 ・・・第2流路
5 ・・・誘導加熱機構(誘導電流生成機構)
51 ・・・コイル
6 ・・・レーザ加熱機構(レーザ照射機構)
61 ・・・レーザ光源
なお、設置台8は、図示しないシリンダー機構により、るつぼ1内の試料Xが加熱炉2内で加熱される加熱位置と、るつぼ1を設置台8から着脱する着脱位置との間で昇降移動するように構成されている。
なお、本実施形態のフィルタ23は、前記ガス流出路22の流入口221から炉本体21の管軸に向かって僅かに離間して設けられており、るつぼ1内で試料Xが燃焼することにより生じたガスが、このフィルタ23を介してガス流出路22に流れるように構成されている。
なお、本実施形態では、レーザ光源61に45W~200Wの出力を得られる半導体レーザを用いている。
これにより、試料Xは、30秒間に亘って、誘導加熱機構5とレーザ加熱機構6とによって同時に加熱されることになる。なお、加熱する時間は30秒に限られず、試料Xによって所望の時間に設定することができる。
Claims (4)
- 試料収容部内で試料を加熱し、それにより生じるガスを分析する分析装置において、
前記試料に電磁誘導による誘導電流を生じさせる誘導電流生成機構と、
前記試料にレーザ光を照射するレーザ照射機構とを具備し、
前記誘導電流生成機構と前記レーザ照射機構とが前記試料に同時に作用することを特徴とする分析装置。 - 前記試料収容部内に酸素を供給する供給流路が形成された流路形成部材をさらに具備し、
前記流路形成部材に前記レーザ光を透過する透過窓が形成されており、前記透過窓を通過したレーザ光の光路が、前記供給流路の流路方向に沿って当該供給流路内に形成されていることを特徴とする請求項1記載の分析装置。 - 前記供給流路が、一端が前記試料に向かって開口するとともに、他端に前記透過窓が形成された直線状流路を有することを特徴とする請求項2記載の分析装置。
- 試料収容部内で試料を加熱し、それにより生じるガスを分析する分析方法において、
前記試料に電磁誘導による誘導電流を生じさせる誘導電流生成機構と、前記試料にレーザ光を照射するレーザ照射機構とを同時に作用させて、前記試料を加熱することを特徴とする分析方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/022,334 US9606090B2 (en) | 2013-09-25 | 2014-09-10 | Analysis device with simultaneous induction and laser heating and analysis method therewith |
| EP14847785.4A EP3051287B1 (en) | 2013-09-25 | 2014-09-10 | Analysis device and analysis method |
| CN201480051838.1A CN105556303A (zh) | 2013-09-25 | 2014-09-10 | 分析装置和分析方法 |
| JP2015539089A JP6494517B2 (ja) | 2013-09-25 | 2014-09-10 | 分析装置及び分析方法 |
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| JP2013-198729 | 2013-09-25 | ||
| JP2013198729 | 2013-09-25 |
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| WO2015045869A1 true WO2015045869A1 (ja) | 2015-04-02 |
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| US (1) | US9606090B2 (ja) |
| EP (1) | EP3051287B1 (ja) |
| JP (1) | JP6494517B2 (ja) |
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| WO2017099120A1 (ja) * | 2015-12-07 | 2017-06-15 | 株式会社堀場製作所 | 分析装置 |
| US20170230672A1 (en) * | 2016-02-05 | 2017-08-10 | Electronics And Telecommunications Research Institute | Method for buffering media transport stream in heterogeneous network environment and image receiving apparatus using the same |
| JPWO2020230775A1 (ja) * | 2019-05-15 | 2020-11-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254108B (zh) * | 2017-07-12 | 2023-02-17 | 株式会社堀场制作所 | 分析装置和分析方法 |
| CN108593416B (zh) * | 2018-04-08 | 2020-09-08 | 国家纳米科学中心 | 微纳粒子检测系统及方法 |
| DE102018207165A1 (de) * | 2018-05-08 | 2019-11-14 | GEOMAR Helmholtz Centre for Ocean Research Kiel | Vorrichtung zum Behandeln von Proben für eine quantitative Elementaranalyse bezüglich C, N und/oder S sowie Zufuhreinrichtung, Verwendung, System und Verfahren |
| CN110715846B (zh) * | 2019-07-12 | 2024-02-20 | 中国原子能科学研究院 | 一种钠燃烧实验装置及获取极低浓度钠气溶胶的方法 |
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| WO2017099120A1 (ja) * | 2015-12-07 | 2017-06-15 | 株式会社堀場製作所 | 分析装置 |
| JPWO2017099120A1 (ja) * | 2015-12-07 | 2018-09-27 | 株式会社堀場製作所 | 分析装置 |
| US10627355B2 (en) | 2015-12-07 | 2020-04-21 | Horiba, Ltd. | Analysis device |
| US20170230672A1 (en) * | 2016-02-05 | 2017-08-10 | Electronics And Telecommunications Research Institute | Method for buffering media transport stream in heterogeneous network environment and image receiving apparatus using the same |
| JPWO2020230775A1 (ja) * | 2019-05-15 | 2020-11-19 | ||
| JP7461937B2 (ja) | 2019-05-15 | 2024-04-04 | 株式会社堀場製作所 | 試料分析装置 |
| US12111254B2 (en) | 2019-05-15 | 2024-10-08 | Horiba, Ltd. | Sample analyzing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3051287A1 (en) | 2016-08-03 |
| CN111537669A (zh) | 2020-08-14 |
| CN105556303A (zh) | 2016-05-04 |
| EP3051287A4 (en) | 2017-04-19 |
| US9606090B2 (en) | 2017-03-28 |
| US20160231298A1 (en) | 2016-08-11 |
| JPWO2015045869A1 (ja) | 2017-03-09 |
| EP3051287B1 (en) | 2020-08-05 |
| JP6494517B2 (ja) | 2019-04-03 |
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