JPS6333162Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a liquid sample container for fluorescence X-ray analysis, particularly a sample container for high viscosity.

Generally, in fluorescence X-ray analysis, a sample container is placed in a vacuum and the analysis is performed. For this reason, in the case of liquid samples, it is necessary to prevent air bubbles contained in the sample from gathering on the X-ray irradiated surface in the sample container and reducing analysis accuracy. A container-like structure is used. In Figure 1, 1 is the top cover, 2 is the tightening nut, 3 is the bottom cover, 4 is the bottom plate, 5 is the main body, 6 is the O-ring, 7 is the X-ray irradiation window made of X-ray transparent mylar thin film, and 8 is the liquid. Sample 9 is an air chamber. Primary X-ray a from an X-ray source in vacuum
excites the liquid sample, and the fluorescent X-rays b generated here are spectrally detected. Liquid sample 8 is located at X in the sample container.
The bottom cover 3 and the bottom plate 4 are removed with the ray irradiation window 7 side facing down, and the injection is carried out from the bottom side d. In this case, the injection port c is formed with a small hole, but it is sufficient for a normal liquid sample that is not highly viscous. The liquid sample is injected into the bottom opening of the main body 5, completely sealed with the bottom cover 3 via the bottom plate 4, and after giving vibration to the entire container, it is returned to its normal posture with the X-ray irradiation window 7 facing up. Return to. At this time, internal air bubbles gather in the air chamber 9, and when the container is placed in a vacuum, the liquid surface of the sample comes into close contact with the inner surface of the X-ray irradiation window 7.

However, in the case of a highly viscous sample, the conventional container described above has a drawback that it is difficult to pour the sample because the injection port c is narrow.

This invention aims to eliminate this inconvenience and provide a sample container for fluorescent X-ray analysis that is suitable for highly viscous samples.

In the case of a highly viscous sample, the air chamber 9 is not necessary because there is no risk that the air bubbles inside the sample will move toward the X-ray irradiation window 7 and collect even under vacuum. This idea focused on this point and devised a sample container with a simple structure and easy handling.

FIG. 2 shows a sample container for fluorescence X-ray analysis according to an embodiment of this invention. In this invention, the main container 10 has a cylindrical shape, and therein is a piston-shaped inner lid 11 and a sponge An elastic member 13 such as the above is provided. 12 is a knob for removing the inner cover 11, and the other structure is the same as that in FIG. 1.

When injecting the sample, place the bottom cover 3, bottom plate 4, elastic member 13, and inner cover 11 with the X-ray irradiation window 7 side facing down.
Remove them one after another and inject from the bottom side d. The main body 10 differs from the conventional one in that it does not have an injection port c and can be easily injected into the main body through a sufficiently wide opening. Inner lid 1 after injection
1. Assemble the elastic member 13, the bottom plate 4, and the bottom cover 3 in this order. In the case of a sample with low viscosity, the inner lid 11 and the main body 10
There is a risk that the sample will leak from the gaps on the inner surface of the tube, but there is no risk of this happening if the sample is highly viscous. In addition, this device does not require any special pretreatment work to collect air bubbles in the sample, unlike conventional methods, and allows highly accurate fluorescence X-ray analysis to be performed on highly viscous samples with extremely simple work. It can be done.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a conventional liquid sample container for fluorescent X-ray analysis, and FIG. 2 is a vertical cross-sectional view of a highly viscous liquid sample for fluorescent X-ray analysis according to an embodiment of the present invention. 1: Top lid, 3: Bottom lid, 4: Bottom plate, 7: X-ray irradiation window, 8: Sample, 10: Main body, 11: Inner lid, 13:
Elastic member.

Claims (1)

[Scope of utility model registration request] An X-ray irradiation window is provided on the top surface, a bottom cover is attached to the bottom surface via a bottom plate, a cylindrical main container is housed inside, and a piston-shaped inner cover is slidably inserted into the main container, A highly viscous liquid sample container for fluorescent X-ray analysis, in which an elastic member is interposed between the inner lid and the bottom plate, and a sample is injected between the inner lid and the X-ray irradiation window.