JPH04116756U - Cell for spectrometry - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a spectroscopic measurement cell that can remove air interposed between a solid sample and the bottom of the cell, bring the bottom of the cell and the sample into close contact, and perform accurate spectroscopic measurements. [Structure] An annular ring with a sealed space inside is formed at the bottom of the cell body in which the solid sample is placed, and a number of pores are bored in the bottom of the cell body between the bottom of the cell body and the annular ring, and the side surface of the annular ring is A spectroscopic measurement cell with a joint for an air suction device attached.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is suitable for spectroscopic measurement of gelatinous solid substances such as gelatin, pudding, or tofu. This invention relates to a cell for spectrometry used in the field of measurement.

0002

[Conventional technology]

When chemically analyzing solid samples, spectrophotometry is sometimes used. Conventionally, when measuring gel-like solid samples such as pudding or tofu, the sample is placed in a measurement chamber. Measurement is performed by irradiating the device with light. In other words, in spectroscopic measurements of gel-like substances such as purines, A sample is placed in a cell made of quartz, etc., and light is projected from below to detect the reflected light. Measure spectra, colors, etc.

0003

[Problem that the idea aims to solve]

5 and 6 are a side view and a bottom view of the conventional measurement cell 10; As shown in the figure, a gel-like substance such as pudding or tofu is put into a conventional sample cell 10. If the sample is removed, air may remain between the bottom of the cell and the bottom of the sample. There are many. Normally, the spectra of colorimetric measurements of gel-like solid materials are separated by 10 nanometer intervals. However, as mentioned above, if there is air between the cell and the bottom of the container, the measured value will change. It becomes unstable and it becomes impossible to take accurate measurements. This idea was developed in view of these issues. The purpose of this is to eliminate the presence of air between the cell and the sample. However, it is possible to remove such air and bring the cell and sample into close contact to perform accurate spectroscopic measurements. The object of the present invention is to provide a spectroscopic measurement cell that can perform the following.

0004

[Means to solve the problem]

That is, in order to solve the above-mentioned problems, this invention aims to solve the above-mentioned problems by using a cell for spectrometry At the bottom of the cell body where the material is placed, there is a ring with a circular or polygonal shape inside as a sealed space. A large number of pores are formed on the bottom surface of the cell body forming a ring-like ring, and forming a boundary between the cell body and the ring. At the same time, a hole is drilled in the side wall of the annular ring, and a joint for attaching the air suction device is installed here. It is characterized by the fact that it is equipped with a mount.

[0005]

[Effect]

The functions of the spectroscopic measurement cell according to this invention with the above configuration are indicated by the reference numerals in the attached diagram. I will explain.

[0006] When a solid sample such as tofu is placed in the spectroscopic measurement cell 1 according to this invention, the cell body 3 and the annular ring 5, the air escapes through a number of pores 4 drilled on the bottom surface 3a of the boundary between the annular ring 5 and the sample. is in close contact with the bottom surface 3a of the cell body 3. The space between the sample M and the bottom surface 3a of the cell body 3 If you cannot relax, remove the ring formed at the bottom of the cell body 3 of this spectrometry cell. When the air in the space 5d inside the ring 5 is removed to lower the degree of vacuum, the bottom surface of the cell body 3 Air interposed between 3a and sample M is discharged through a large number of pores 4. Besides that The sample then comes to tightly adhere to the bottom surface 3a of the cell body 3.

[0007]

【Example】

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

[0008] FIG. 1 is a bottom plan view of a measuring cell 1 according to this invention, and FIG. It is a sectional view taken along arrow A. The cell body 3 of this spectrometry cell is cylindrical and has a dowel at the bottom. - A nut-shaped (short cylindrical) annular ring 5 is formed. This annular ring 5 has an inner side surface. 5a, the bottom surface 5b, and the outer side surface 5c are all walled with glass, quartz, or other plate materials, and the interior is tightly sealed. A sealed space 5d is formed. A cell body 3 forming a boundary between the cell body 3 and the annular ring 5 A large number of pores 4 are bored in the bottom part 3a of the holder. And a hole is drilled in the side of the annular ring 5. and a joint for attaching an air suction device such as an aspirator (not shown) here. Install 6.

[0009] FIG. 3 is a perspective view showing the entire spectroscopic measurement cell 1 according to this invention having the above structure. It is. Therefore, a solid sample such as tofu is placed in the spectroscopic measurement cell 1 according to this invention. Then, a large number of thin holes are formed on the bottom surface 3a of the cell body 3 at the boundary between the cell body 3 and the annular ring 5. Air escapes through the hole 4 and the sample comes into close contact with the bottom surface of the cell body 3. sample and cell body 3 If air cannot escape between the bottom surface 3a and the cell body 3 of this spectrometry cell 1, The air in the space 5d inside the annular ring 5 formed at the bottom is removed using an air suction device, etc. When the emptyness is lowered, the air interposed between the bottom surface 3a of the cell body 3 and the sample M is removed from the cell. Through a large number of pores 4 in the bottom surface 3a of the cell body 3 that forms the boundary between the body 3 and the annular ring 5. be discharged. Therefore, the sample comes into close contact with the bottom surface 3a of the cell body 3. Ru.

0010 Figure 4 shows an example of how the spectroscopic measurement cell 1 according to this invention is used for actual measurement. This is a side view of the spectroscopic measurement cell 1, except for the outer periphery where the pores are located. A stand is installed on the bottom surface of the outer periphery of the cell body 3 so that light is irradiated only on the bottom surface of the central part of the cell body 3. If measurement is performed with the pores 7 installed, scattering of light due to the pores 4 can be prevented. still, In this embodiment, the cell body 3, donut-shaped ring 5, etc. are cylindrical. However, the shape is not limited to cylindrical, but may also be prismatic or polygonal. The condition is not limited.

[0011]

[Effect of the idea]

The spectroscopic measurement cell according to this invention has the configuration described in detail above, so it is possible to This removes the air that tends to be present between the cell and the bottom of the cell body, allowing them to adhere perfectly. Rukoto can. Therefore, the measured value will not fluctuate during spectroscopic measurement, and it will be accurate. Measured values can be obtained.

0012

[Brief explanation of drawings]

FIG. 1 is a bottom plan view of a measurement cell according to this invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1;

FIG. 3 is an overall perspective view of the spectroscopic measurement cell according to the invention.

FIG. 4 is a side view showing an example of use of the spectroscopic measurement cell according to the invention in actual measurement.

FIG. 5 is a side view of a conventional spectrometry cell.

FIG. 6 is a bottom view of a conventional spectroscopic measurement cell.

[Explanation of symbols]

1 Cell for spectrophotometry measurement 3 Cell body
3a Bottom surface of cell body 4 Pore 5 Annular ring 5d Internal space of annular ring 6 Joint

Claims (1)

[Scope of utility model registration request] Claim 1: An annular ring with a circular or polygonal interior as a sealed space is formed at the bottom of a cell body into which a solid sample is placed, and a large number of cells are formed on the bottom surface of the cell body, which is the boundary between the cell body and the annular ring. 1. A cell for spectroscopic measurement, characterized in that a pore is bored in the side wall of the annular ring, and a joint for attaching an air suction device is attached to the hole.