Cuvette assembly for multi-wavelength fluorescence spectrometer

Abstract

The utility model discloses a cuvette assembly for a multi-wavelength fluorescence spectrometer, and relates to the technical field of water quality and environmental protection detection. The cuvette comprises a cuvette groove body, a cuvette is arranged in the cuvette groove body, a water sample is filled in the cuvette, and a plurality of groups of LED excitation light sources are arranged on the inner wall of the cuvette groove body. By changing the direction of a light path and combining the improvement of the cuvette, the problem of position conflict of light sources with different wavelengths is solved, the distance from an LED excitation light source to a water sample and the distance from emitted light penetrating through the water sample to a detector are kept consistent, the accuracy of a detection result is further guaranteed, and the defects that a traditional multi-wavelength fluorescence spectrum structure is difficult to realize and the detection accuracy is low are overcome. In the prior art, the light transmittance and flatness of the bottom of the cuvette need to be ensured due to the fact that a detector is arranged at the bottom of the cuvette, and preferably, flat and smooth quartz glass with the thickness of less than 1mm can be adopted to ensure the sensitivity and accuracy of detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of water quality and environmental protection detection, and in particular relates to a colorimetric dish component for a multi-wavelength fluorescence spectrometer. Background Art

[0002] Fluorescence spectroscopy has good application prospects in water quality analysis and environmental testing due to its rapid response and strong resolution. It can be used for rapid qualitative and quantitative analysis of substances in water, as well as pollutant tracing. In laboratory applications, the light source often uses a full-spectrum light source such as a xenon lamp, and a single-wavelength excitation light is obtained after passing through a monochromator and a slit. Through the use of precision optical devices such as monochromators, slits, and lens groups, the position of the incident cuvette of excitation light of different wavelengths remains consistent, ensuring the accuracy of the test results.

[0003] However, in the application scenarios of field testing, it is often difficult to meet the working conditions of laboratory spectrometers, and it is hoped that the test throughput will be prioritized, and it is acceptable to appropriately reduce the detection accuracy. Therefore, single-wavelength, dual-wavelength or multi-wavelength fluorescence excitation light sources are used. Such light sources are usually single-wavelength light-emitting diodes, or LEDs, in order to greatly reduce the complexity and cost of light source devices, but this also leads to the problem of inconsistent incident positions of excitation light. If you want to further improve the resolution of field detection, the most feasible way is to add LED light sources of different wavelengths. However, due to the volume of LED components, the inconsistency of the incident light position will be more serious, which will affect the reliability of the test results.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related art, the utility model proposes a cuvette assembly for a multi-wavelength fluorescence spectrometer to overcome the above technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a cuvette assembly for a multi-wavelength fluorescence spectrometer, comprising a cuvette tank body, a cuvette is arranged inside the cuvette tank body, a water sample is filled inside the cuvette tank body, a plurality of groups of LED excitation light sources are arranged on the inner wall of the cuvette tank body, and a detector is arranged inside the cuvette tank body.

[0008] Furthermore, the cuvette tank body includes an outer tank body and a detection tank body, the outer surface of the outer tank body is connected to several groups of excitation light slots, the LED excitation light sources are respectively located on the inner walls of the several groups of excitation light slots, and the detector is located inside the detection tank body.

[0009] Furthermore, the shape of the cuvette is a quadrangular prism, and the number of the LED excitation light sources is four groups.

[0010] Furthermore, the LED excitation light sources are evenly surrounded on the side of the cuvette so that the excitation light thereof remains perpendicular to the side wall of the cuvette, and the distances between each of the LED excitation light sources are equal and consistent with the side wall of the cuvette facing it, and the heights of each of the LED excitation light sources are consistent.

[0011] Furthermore, the bottom of the cuvette is made of quartz glass, and the detector is located at the bottom of the cuvette.

[0012] Furthermore, the outer tank body is in the shape of a hexagonal prism.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model solves the problem of position conflict of light sources of different wavelengths by changing the direction of the light path and combining the improvement of the cuvette, so that the distance from the LED excitation light source to the water sample and the distance from the emitted light penetrating the water sample to the detector are consistent, thereby ensuring the accuracy of the test results and overcoming the problems that the traditional multi-wavelength fluorescence spectrum structure is difficult to implement and the accuracy of the test results is difficult to improve. Since the detector is arranged at the bottom of the cuvette, it is necessary to ensure the light transmittance and flatness of the bottom of the cuvette. Preferably, a flat and smooth quartz glass with a thickness of less than 1 mm can be used to ensure the sensitivity and accuracy of the detection.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the cuvette of the utility model;

[0019] Figure 3 This is a schematic diagram of the outer tank structure of the utility model;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Cuvette body; 2. Cuvette; 3. Water sample; 4. LED excitation light source; 5. Detector; 101. Outer body; 102. Detection body; 103. Excitation light tank. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] See also Figure 1-Figure 3 As shown, the utility model is a cuvette assembly for a multi-wavelength fluorescence spectrometer, comprising a cuvette tank body 1, a cuvette 2 is arranged inside the cuvette tank body 1, the cuvette 2 is filled with a water sample 3, a plurality of groups of LED excitation light sources 4 are arranged on the inner wall of the cuvette tank body 1, and a detector 5 is arranged inside the cuvette tank body 1.

[0025] In one embodiment, for the above-mentioned cuvette tank body 1, the cuvette tank body 1 includes an outer tank body 101 and a detection tank body 102, the outer surface of the outer tank body 101 is connected to a plurality of groups of excitation light grooves 103, the LED excitation light sources 4 are respectively located on the inner walls of the plurality of groups of excitation light grooves 103, and the detector 5 is located inside the detection tank body 102.

[0026] In one embodiment, for the above-mentioned cuvette 2 , the shape of the cuvette 2 is a quadrangular prism, and the number of the LED excitation light sources 4 is four groups.

[0027] In one embodiment, for the above-mentioned LED excitation light source 4, the LED excitation light source 4 is evenly surrounded on the side of the cuvette 2 so that its excitation light remains perpendicular to the side wall of the cuvette 2, and the distance between each LED excitation light source 4 is equal, and the distance with the side wall of the cuvette 2 directly facing it is consistent, and the height of each LED excitation light source 4 is consistent.

[0028] In one embodiment, for the cuvette 2 , the bottom of the cuvette 2 is made of quartz glass, and the detector 5 is located at the bottom of the cuvette 2 .

[0029] In one embodiment, for the outer tank body 101, the outer tank body 101 has a hexagonal prism shape.

[0030] When in use, the cuvette 2 is placed in the cuvette tank 1. The cuvette 2 commonly used for fluorescence testing is a quadrangular prism structure with a square cross-section. According to the aforementioned optical path and excitation light source adjustment, without changing the configuration of the cuvette 2, it can support four groups of LED excitation light sources 4 to excite the water sample 3 from the same height and the same distance, and the emitted light reaches the detector 5 after the same propagation distance. When more excitation lights of different wavelengths are used, that is, more LED excitation light sources 4 need to be added, the test conditions of different wavelengths of excitation lights can be unified by changing the configuration of the cuvette 2. For example, when six groups of excitation wavelengths are required, the configuration of the cuvette 2 is changed to a hexagonal prism with a regular hexagonal cross-section.

[0031] The utility model solves the problem of position conflict of light sources of different wavelengths by changing the direction of the light path and combining the improvement of the cuvette 2, so that the distance from the LED excitation light source 4 to the water sample 3 and the distance from the emitted light penetrating the water sample 3 to the detector 5 remain consistent, thereby ensuring the accuracy of the detection result and overcoming the problem that the traditional multi-wavelength fluorescence spectrum structure is difficult to implement and the accuracy of the test result is difficult to improve.

[0032] Through the above technical scheme, 1. By changing the direction of the light path and combining with the improvement of the cuvette 2, the problem of position conflict of light sources of different wavelengths is solved, so that the distance from the LED excitation light source 4 to the water sample 3 and the distance from the emitted light penetrating the water sample 3 to the detector 5 are kept consistent, thereby ensuring the accuracy of the detection results and overcoming the problems that the traditional multi-wavelength fluorescence spectrum structure is difficult to implement and the accuracy of the test results is difficult to improve. Since the detector 5 is arranged at the bottom of the cuvette 2, it is necessary to ensure the light transmittance and flatness of the bottom of the cuvette 2. Preferably, a flat and smooth quartz glass with a thickness of less than 1 mm can be used to ensure the sensitivity and accuracy of the detection.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cuvette assembly for a multi-wavelength fluorescence spectrometer, comprising a cuvette tank (1), characterized in that: A cuvette (2) is arranged inside the cuvette tank (1), the interior of the cuvette (2) is filled with a water sample (3), a plurality of groups of LED excitation light sources (4) are arranged on the inner wall of the cuvette tank (1), and a detector (5) is arranged inside the cuvette tank (1).

2. The cuvette assembly for a multi-wavelength fluorescence spectrometer according to claim 1, characterized in that: The cuvette tank body (1) comprises an outer tank body (101) and a detection tank body (102); the outer surface of the outer tank body (101) is connected to a plurality of groups of excitation light slots (103); the LED excitation light sources (4) are respectively located on the inner walls of the plurality of groups of excitation light slots (103); and the detector (5) is located inside the detection tank body (102).

3. The cuvette assembly for a multi-wavelength fluorescence spectrometer according to claim 1, characterized in that: The cuvette (2) is in the shape of a quadrangular prism, and the number of the LED excitation light sources (4) is four groups.

4. The cuvette assembly for a multi-wavelength fluorescence spectrometer according to claim 1, characterized in that: The LED excitation light sources (4) are evenly arranged around the side of the cuvette (2) so that the excitation light is kept perpendicular to the side wall of the cuvette (2), and the distances between the LED excitation light sources (4) are equal and consistent with the side wall of the cuvette (2) facing it, and the heights of the LED excitation light sources (4) are consistent.

5. The cuvette assembly for a multi-wavelength fluorescence spectrometer according to claim 1, characterized in that: The material of the bottom of the cuvette (2) is quartz glass, and the detector (5) is located at the bottom of the cuvette (2).

6. The cuvette assembly for a multi-wavelength fluorescence spectrometer according to claim 2, characterized in that: The outer tank body (101) is in the shape of a hexagonal prism.

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