WO2021085200A1 - グラファイトチューブ位置決め装置、および、これを備える黒鉛炉法原子吸光分光光度計 - Google Patents

グラファイトチューブ位置決め装置、および、これを備える黒鉛炉法原子吸光分光光度計 Download PDF

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Publication number
WO2021085200A1
WO2021085200A1 PCT/JP2020/039212 JP2020039212W WO2021085200A1 WO 2021085200 A1 WO2021085200 A1 WO 2021085200A1 JP 2020039212 W JP2020039212 W JP 2020039212W WO 2021085200 A1 WO2021085200 A1 WO 2021085200A1
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WO
WIPO (PCT)
Prior art keywords
graphite
graphite tube
positioning device
injection hole
tube
Prior art date
Application number
PCT/JP2020/039212
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English (en)
French (fr)
Japanese (ja)
Inventor
勝 勝 孫
Original Assignee
株式会社島津製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to JP2021553412A priority Critical patent/JPWO2021085200A1/ja
Priority to CN202080090697.XA priority patent/CN114902034A/zh
Publication of WO2021085200A1 publication Critical patent/WO2021085200A1/ja

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry

Definitions

  • the present invention relates to a graphite tube positioning device and a graphite furnace method atomic absorption spectrophotometer including the graphite tube positioning device.
  • Graphite-moderated reactor method When performing analysis and measurement using an atomic absorption spectrophotometer, the accuracy and reproducibility of the injection position of the sample solution directly affects the accuracy and reproducibility of the final measurement result, so it is very important. is important.
  • the graphite tube which is an important component for atomizing the sample solution, is a consumable item and needs to be replaced regularly. Also, when measuring different elements, it is necessary to replace them with different types of graphite tubes.
  • the graphite tube when replacing a graphite tube, the graphite tube is first placed in the graphite cap of the graphite furnace method atomic absorption spectrophotometer, and the center line of the first injection hole of the graphite cap and the second injection hole of the graphite tube are placed. Visually adjust the position of the graphite tube so that it is located on the same straight line as the center line of the graphite tube, and then fix the graphite tube.
  • due to the low accuracy of positioning by this method it is not possible to ensure that the graphite tubes are placed in the same position each time the graphite tubes are replaced. Therefore, after replacing the graphite tube, it is necessary to adjust the position of the sample injector for injecting the sample according to the position of the graphite tube, which is complicated to operate.
  • the present invention has been made in view of such a problem, and when the graphite tube is replaced, the position of the graphite tube can be accurately determined, and the reproducibility of the graphite tube position can be ensured. It is an object of the present invention to provide a tube positioning device and a graphite furnace method atomic absorption spectrophotometer.
  • one embodiment of the present invention provides a graphite tube positioning device (6).
  • the graphite tube positioning device (6) positions the graphite tube (2) when the graphite tube (2) is fixed to the graphite furnace method atomic absorption spectrophotometer.
  • the graphite furnace method atomic absorption spectrophotometer includes a graphite cap (1), a graphite tube (2), and a graphite holder (3), and the graphite tube (2) includes a graphite cap (1) and a graphite holder (3).
  • the graphite cap (1) is provided with a first injection hole (11)
  • the graphite tube (2) is provided with a second injection hole (21).
  • the graphite tube positioning device (6) is a first positioning portion (6) in which the outer peripheral surface abuts on the wall surface of the first injection hole (11) when the graphite tube positioning device (6) positions the graphite tube (2). 61) and a second positioning portion (62) whose outer peripheral surface abuts on the wall surface of the second injection hole (21) when the graphite tube positioning device (6) positions the graphite tube (2). , The center line of the first positioning portion (61) and the center line of the second positioning portion (62) are located on the same straight line.
  • the graphite tube positioning device when replacing the graphite tube, the graphite tube positioning device is used to position the graphite tube.
  • the first positioning portion of the graphite tube positioning device abuts on the first injection hole of the graphite cap, and the second positioning portion of the graphite tube positioning device abuts on the second injection hole of the graphite tube.
  • the center line of the first positioning portion and the center line of the second positioning portion are located on the same straight line, the center line of the first injection hole of the graphite cap and the center line of the second injection hole of the graphite tube It can be ensured that the center line is located on the same straight line.
  • the graphite tube can be accurately positioned, and the reproducibility of the graphite tube position can be ensured.
  • the convenience of operation of the graphite furnace method atomic absorption spectrophotometer is improved.
  • Another embodiment of the present invention provides a graphite furnace method atomic absorption spectrophotometer equipped with the above graphite tube positioning device (6).
  • the position of the graphite tube can be accurately determined, and the reproducibility of the graphite tube position can be ensured.
  • FIG. 1 is an exploded perspective view showing a graphite furnace method atomic absorption spectrophotometer before the graphite tube positioning device positions the graphite tube.
  • FIG. 2 is a schematic view showing a graphite tube positioning device.
  • FIG. 3 is a schematic view showing a graphite furnace method atomic absorption spectrophotometer when the graphite tube positioning device positions the graphite tube.
  • the graphite furnace method atomic absorption spectrophotometer includes a graphite cap 1, a graphite tube 2, a graphite holder 3, a left cooling block 4, a right cooling block 5, and a graphite tube.
  • a positioning device 6 is provided.
  • the graphite cap 1 is fixed to the left cooling block 4.
  • the graphite holder 3 is fixed to the right cooling block 5.
  • the graphite tube 2 is attached to the graphite cap 1 so that the centerline of the first injection hole 11 of the graphite cap 1 and the second injection hole 21 of the graphite tube 2 Align the centerline as closely as possible and rotate the graphite tube 2 so that the sample injector can inject the sample into the graphite tube 2 through the first injection hole 11 and the second injection hole 21. Adjust the position while letting it.
  • the right cooling block 5 is moved to fix the graphite tube 2 between the graphite cap 1 and the graphite holder 3.
  • the graphite furnace method atomic absorption spectrophotometer according to the present invention includes a graphite tube positioning device 6.
  • the graphite tube positioning device 6 includes a first positioning unit 61, a second positioning unit 62, a protruding portion 63, and an operating unit 64.
  • the center line of the first positioning unit 61 and the center line of the second positioning unit 62 are located on the same straight line.
  • the protruding portion 63 is formed on the side opposite to the second positioning portion 62 with respect to the first positioning portion 61.
  • the operation unit 64 is formed at the tip of the protrusion 63 and is used when the user operates the graphite tube positioning device 6.
  • the outer peripheral surface of the first positioning portion 61 is the first.
  • the outer peripheral surface of the second positioning portion 62 is in contact with the wall surface of the second injection hole 21, and the protruding portion 63 is projected from the first injection hole 11.
  • the position of the graphite tube 2 can be accurately determined, and the reproducibility of the position of the graphite tube 2 can be ensured. Since it is not necessary to adjust the position of the sample injector after replacing the graphite tube 2, the convenience of operation of the graphite furnace method atomic absorption spectrophotometer is improved. Further, since it is possible to ensure that the center line of the first injection hole 11 of the graphite cap 1 and the center line of the second injection hole 21 of the graphite tube 2 are located on the same straight line, the sample injector is a sample. It is advantageous to inject.
  • the protruding portion 63 protrudes from the first injection hole 11, it is possible to ensure that the operating portion 64 is located outside the first injection hole 11, and the operator can operate the graphite tube positioning device 6. It is advantageous to operate.
  • the right cooling block 5 is moved, and the graphite tube 2 is fixed between the graphite cap 1 and the graphite holder 3.
  • the graphite tube positioning device 6 is taken out, and the positioning of the graphite tube 2 is completed. This makes it possible to prevent the graphite tube 2 from being displaced when the graphite tube 2 is fixed.
  • the outer peripheral surface of the first positioning portion 61 and the wall surface of the first injection hole 11 have the same shape, and the outer peripheral surface of the second positioning portion 62 and the second injection It has the same shape as the wall surface of the hole 21.
  • the outer peripheral surface of the first positioning portion 61 can be brought into close contact with the wall surface of the first injection hole 11, and the outer peripheral surface of the second positioning portion 62 is closer to the wall surface of the second injection hole 21.
  • the graphite tube 2 can be positioned more accurately.
  • the outer peripheral surface of the first positioning portion 61 and the wall surface of the first injection hole 11 are conical surfaces, and the outer peripheral surface of the second positioning portion 62 and the second injection hole
  • the wall surface of 21 is a cylindrical surface. This makes it easier to position the graphite tube 2 and inject the sample injector.
  • the graphite tube positioning device 6 includes the protrusion 63 and the operation unit 64, but the graphite tube positioning device 6 does not have to include the protrusion 63 and the operation unit 64.
  • the operator can use the graphite tube positioning device 6 for positioning. Can be operated.
  • the outer peripheral surface of the first positioning portion 61 and the wall surface of the first injection hole 11 have the same shape, and the outer peripheral surface of the second positioning portion 62 and the second injection hole 21 It has the same shape as the wall surface of the above, but the present invention is not limited to this.
  • the outer peripheral surface of the first positioning portion 61 and the wall surface of the first injection hole 11 may have different shapes, and the outer peripheral surface of the second positioning portion 62 and the wall surface of the second injection hole 21 May have different shapes.
  • the outer peripheral surface of the first positioning portion 61 and the wall surface of the first injection hole 11 are conical surfaces, and the outer peripheral surface of the second positioning portion 62 and the second injection hole 21
  • the wall surface is a cylindrical surface, but the present invention is not limited to this.
  • the outer peripheral surface of the first positioning portion 61, the wall surface of the first injection hole 11, the outer peripheral surface of the second positioning portion 62, and the wall surface of the second injection hole 21 may have other shapes.
  • the graphite tube positioning device (6) positions the graphite tube (2) when the graphite tube (2) is fixed to the graphite furnace method atomic absorption spectrophotometer.
  • the graphite furnace method atomic absorption spectrophotometer includes a graphite cap (1), a graphite tube (2), and a graphite holder (3), and the graphite tube (2) includes a graphite cap (1) and a graphite holder (3).
  • the graphite cap (1) is provided with a first injection hole (11), and the graphite tube (2) is provided with a second injection hole (21).
  • the graphite tube positioning device (6) is a first positioning portion (6) in which the outer peripheral surface abuts on the wall surface of the first injection hole (11) when the graphite tube positioning device (6) positions the graphite tube (2). 61) and a second positioning portion (62) whose outer peripheral surface abuts on the wall surface of the second injection hole (21) when the graphite tube positioning device (6) positions the graphite tube (2). , The center line of the first positioning portion (61) and the center line of the second positioning portion (62) are located on the same straight line.
  • the graphite tube positioning device when the graphite tube is replaced, the graphite tube positioning device is used to position the graphite tube.
  • the first positioning part of the graphite tube positioning device comes into contact with the first injection hole of the graphite cap, and the second positioning part of the graphite tube positioning device comes into contact with the second injection hole of the graphite tube. Since the center line of the first positioning portion and the center line of the second positioning portion are located on the same straight line, the center line of the first injection hole of the graphite cap and the second injection of the graphite tube are in contact with each other. It can be ensured that the center line of the hole is located on the same straight line.
  • the graphite tube can be accurately positioned, and the reproducibility of the graphite tube position can be ensured.
  • the convenience of operation of the graphite furnace method atomic absorption spectrophotometer is improved.
  • the outer peripheral surface of the first positioning portion can be brought into close contact with the wall surface of the first injection hole, and the outer peripheral surface of the second positioning portion is the second. Since the wall surface of the injection hole can be brought into close contact with the graphite tube, the graphite tube can be positioned more accurately.
  • the outer peripheral surface of the first positioning portion (61) and the wall surface of the first injection hole (11) are conical surfaces
  • the second The outer peripheral surface of the positioning portion (62) and the wall surface of the second injection hole (21) are cylindrical surfaces.
  • the graphite tube can be positioned and the sample injector can be injected with a sample more easily.
  • the graphite tube positioning device according to any one of items 1 to 3 is formed on the side opposite to the second positioning portion (62) with respect to the first positioning portion (61).
  • the graphite tube positioning device (6) positions the graphite tube (2), it is formed at the protruding portion (63) protruding from the first injection hole (11) and the tip of the protruding portion (63). It further includes an operating unit (64).
  • the operator can easily position the graphite tube.
  • the graphite furnace method atomic absorption spectrophotometer includes the graphite tube positioning device (6) according to any one of items 1 to 4.
  • the graphite tube positioning device is used to position the graphite tube. Therefore, after the graphite tube is replaced, the sample injector is used. It is not necessary to adjust the position of the graphite furnace method, which improves the convenience of operation of the atomic absorption spectrophotometer.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Investigating Or Analysing Materials By Optical Means (AREA)
PCT/JP2020/039212 2019-10-30 2020-10-19 グラファイトチューブ位置決め装置、および、これを備える黒鉛炉法原子吸光分光光度計 WO2021085200A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021553412A JPWO2021085200A1 (enrdf_load_stackoverflow) 2019-10-30 2020-10-19
CN202080090697.XA CN114902034A (zh) 2019-10-30 2020-10-19 石墨管定位装置以及具备该装置的石墨炉法原子吸收分光光度计

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921844337.5 2019-10-30
CN201921844337.5U CN211402123U (zh) 2019-10-30 2019-10-30 石墨管定位装置以及石墨炉法原子吸收分光光度计

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022024505A1 (ja) * 2020-07-29 2022-02-03 株式会社島津製作所 原子吸光分光光度計

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147434A (en) * 1976-09-08 1979-04-03 Bodenseewerk Perkin-Elmer & Co., Gmbh Method and apparatus for determining volatile and decomposable compounds by atomic absorption
JPS62197051U (enrdf_load_stackoverflow) * 1986-06-05 1987-12-15
JPH045554U (enrdf_load_stackoverflow) * 1990-05-02 1992-01-20
CN206725426U (zh) * 2017-08-10 2017-12-08 濮阳市盛源能源科技股份有限公司 原子吸收分光光度计

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0455554U (enrdf_load_stackoverflow) * 1990-09-19 1992-05-13

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147434A (en) * 1976-09-08 1979-04-03 Bodenseewerk Perkin-Elmer & Co., Gmbh Method and apparatus for determining volatile and decomposable compounds by atomic absorption
JPS62197051U (enrdf_load_stackoverflow) * 1986-06-05 1987-12-15
JPH045554U (enrdf_load_stackoverflow) * 1990-05-02 1992-01-20
CN206725426U (zh) * 2017-08-10 2017-12-08 濮阳市盛源能源科技股份有限公司 原子吸收分光光度计

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022024505A1 (ja) * 2020-07-29 2022-02-03 株式会社島津製作所 原子吸光分光光度計
JPWO2022024505A1 (enrdf_load_stackoverflow) * 2020-07-29 2022-02-03
JP7371787B2 (ja) 2020-07-29 2023-10-31 株式会社島津製作所 原子吸光分光光度計

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CN211402123U (zh) 2020-09-01
CN114902034A (zh) 2022-08-12

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