CN114636590A - Liquid sampling detection device and liquid sample detection method applying same - Google Patents
Liquid sampling detection device and liquid sample detection method applying same Download PDFInfo
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- CN114636590A CN114636590A CN202210326341.2A CN202210326341A CN114636590A CN 114636590 A CN114636590 A CN 114636590A CN 202210326341 A CN202210326341 A CN 202210326341A CN 114636590 A CN114636590 A CN 114636590A
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- sample
- negative pressure
- sampler
- channel
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
Abstract
The invention provides a liquid sampling detection system, comprising: the sampler comprises a sample channel, the sample channel comprises a sample introduction end and a sample outlet end, the sample introduction end is provided with a sample introduction port, and the sample outlet end is provided with a sample outlet; the sampler interface is used for inserting the sample outlet end so as to realize the assembly of the sample accommodating part and the sampler; and the negative pressure generating device is used for enabling the sample channel to form a negative pressure channel.
Description
Technical Field
The invention belongs to the field of liquid sample detection, and particularly relates to a liquid sampling detection device and a liquid sample detection method using the same.
Background
Water sample environments in nature are complex and various, and the collection and detection of liquid samples are often applied to the research of the water sample environments. The conventional liquid sample collection and detection operation process generally comprises the steps of collecting a sample by using a sampler, transferring the sample to an inlet of a sample container along with the sampler, transferring the sample container to a matched index detection instrument for reading, and adding a detection reagent into the sample container before or after sample addition to the sample container under the condition that the sample to be detected needs to react with the detection reagent before detection. The above-mentioned process steps are loaded down with trivial details, and the huge batch sample of quantity often needs to be handled in actual water sample detection, and complicated and loaded down with trivial details sampling procedure brings huge work load for the measurement personnel on the one hand, and on the other hand has also caused the inefficiency of water sample detection.
Disclosure of Invention
The invention aims to provide a liquid sampling detection device and a liquid sample detection method using the same, so as to improve the convenience of liquid sampling.
According to one aspect of the present invention, there is provided a liquid sampling detection system comprising: the sampler comprises a sample channel, the sample channel comprises a sample inlet end and a sample outlet end, the sample inlet end is provided with a sample inlet, and the sample outlet end is provided with a sample outlet; the sampler interface is used for inserting the sample outlet end so as to realize the assembly of the sample accommodating part and the sampler; and the negative pressure generating device is used for enabling the sample channel to form a negative pressure channel.
In the liquid sampling detection device, the sampler is directly communicated with the sample containing cavity, and during sampling, the negative pressure generating device enables the sample channel to form a negative pressure channel, so that a sample sequentially enters the sample inlet, the sample channel and the sample outlet under the action of negative pressure and finally directly enters the sample containing cavity, the performance index of the sample contained in the reaction container can be directly observed according to the detection requirement, or a detection reaction reagent is placed in the sample containing cavity in advance, and the sample directly reacts with the detection reaction reagent after entering the sample containing cavity, so that the obtained reaction product can only be directly observed according to the performance index. Therefore, the liquid sampling device provided by the invention can be used for continuously sampling and detecting liquid, is convenient to operate and effectively improves the detection efficiency.
Preferably, the direction from the section to the sample outlet end is taken as the sample inlet direction; along the sample introduction direction, a first section and a second section are sequentially arranged on the sample introduction channel, and the inner diameter of the first section is in an increasing variation trend. The cross section of the first section is conical, and the caliber of a sample inlet positioned at the end part of the first section is small, so that a liquid sample can more easily enter the sample channel under the action of negative pressure.
Preferably, the first section is connected with the second section, and a handle is arranged at the joint of the first section and the second section. The setting of handle is convenient for operating personnel control sample thief, has improved the accuracy of detection operation, has also improved the convenience of sample thief installation, dismantlement.
Preferably, the sampler is of an integrally formed structure.
Preferably, the sample holding part further comprises a fastener, the fastener is matched with the interface of the sampler and the fastener is matched with the sample outlet end to realize the connection between the sampler and the sample holding part. Through setting up the fastener, realize the firm equipment of sample holding portion and sample thief, at the sample in-process, guarantee sampling detecting system's structural stability. In practical application, the material of the fastening member, such as tin foil, aluminum foil or elastic member, can be selected according to actual needs.
Preferably, the sample receiving portion and the sampler are detachably mounted. Through the arrangement, the convenience of cleaning, replacing and containing the liquid sampling detection device provided by the invention is improved.
Preferably, the fastener is an elastomer. Have elastic fastener, through realizing good sealed to the junction of sample thief and sample holding portion, improved liquid sampling detecting system's compactness and structural stability, existing be favorable to negative pressure generating device to provide accurate, effectual negative pressure, also can avoid the sample to leak, simultaneously, also convenient dismantlement, installation.
Preferably, the sample passage, the sample-accommodating chamber and the negative pressure generating device are communicated with each other to realize the assembly of the sampler, the sample-accommodating portion and the negative pressure generating device for forming a negative pressure region communicating the inside of the sample passage and the inside of the sample-accommodating chamber.
Preferably, when the sampler, the sample-receiving portion, and the negative pressure generating device are assembled, the sampler and the negative pressure generating device penetrate through a fastening member of a sampler port installed in the sample-receiving portion and protrude into the sample-receiving chamber.
Preferably, an ear washing ball is used as the negative pressure generating device.
Preferably, the cavity wall of the sample accommodating cavity is provided with a light incident port and a light emergent port. Therefore, the optical detection instrument can be directly used for detecting the degree of the sample accommodated in the sample accommodating cavity.
Preferably, the sample containment portion is a cuvette.
The liquid sampling and detecting device provided by the invention can continuously carry out a series of operations of automatic sampling and liquid sample detection, simplifies the procedures of liquid sample sampling and detection, improves the efficiency of liquid sample detection, avoids the condition of liquid sample pollution caused by liquid transfer for many times, and improves the accuracy of liquid sample detection.
According to another aspect of the present invention, there is provided a liquid sample detection method using the liquid sampling detection system, including the following steps: s1, extending a section of a sampler into a sample to be detected; s2, forming a negative pressure channel in the sample channel by using a negative pressure generating device, enabling a sample to be detected to enter the sample channel through the sample inlet under the action of negative pressure, and enabling the sample to pass through the sample channel and the sample outlet in sequence and enter the sample accommodating cavity; and S3, directly carrying out index detection of required representation on the sample to be detected accommodated in the sample accommodating cavity.
According to another aspect of the present invention, there is provided a liquid sample detection method using the liquid sampling detection system, including the following steps: s1, placing a reaction reagent for reacting with a sample to be detected in a sample accommodating cavity; s2, extending the section of the sampler into a sample to be detected; s3, forming a negative pressure channel in the sample channel by using a negative pressure generating device, enabling a sample to be detected to enter the sample channel through the sample inlet under the action of negative pressure, and enabling the sample to pass through the sample channel and the sample outlet in sequence and enter the sample accommodating cavity; s4, enabling a sample to be detected to fully react with a reaction reagent; and S5, after the reaction is finished, directly carrying out index detection of required representation on the reaction product contained in the sample containing cavity.
The liquid sample detection method provided by the invention is simple and efficient, is suitable for large-batch water sample detection, and can even be used for on-site sampling instant detection of partial indexes.
Drawings
Fig. 1 is a structural view of components constituting a liquid sampling and detecting apparatus provided in embodiment 1;
fig. 2 is a structural diagram of a sampler of the liquid sampling and detecting device provided in embodiment 1;
FIG. 3 is a view showing the structure of a sample-containing part of a liquid sampling-detection apparatus according to example 1.
The correspondence of the reference numbers in the above figures is as follows: 1. the sampler comprises a sampler body, 11 parts of a sample inlet, 12 parts of a first section, 13 parts of a second section, 14 parts of a sample outlet, 15 parts of a handle, 2 parts of a sample containing part, 21 parts of a sample containing cavity, 22 parts of a sampler connector, 23 parts of a fastener and 3 parts of a negative pressure generating device.
Detailed description of the preferred embodiments
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
The liquid sampling and detecting apparatus provided in this embodiment includes a sampler 1, a sample-accommodating portion 2, and a negative pressure generating apparatus 3. As shown in the drawings, in the present embodiment, the sampler 1 is an integrally formed hollow pipe structure, the sample accommodating portion 2 is a colorimetric tube, and the negative pressure generating device 3 is an ear washing bulb.
As shown in fig. 2, the sampler 1 includes a sample channel, the sample channel includes a sample inlet end and a sample outlet end, the sample inlet end has a sample inlet 11, and the sample outlet end has a sample outlet 14. The direction of the section pointing to the sample outlet end is taken as the sample inlet direction, a first section 12 and a second section 13 which are communicated with each other are sequentially arranged on the sample inlet channel along the sample inlet direction, the inner diameter of the first section 12 is in the increasing trend of change, the tail end of the second section 13 is an oblique cut, and the oblique cut is the sample outlet 14. A handle 15 is provided at the junction of the first section 12 and the second section 13. The setting up of handle 15 is convenient for operating personnel control sample thief 1, has improved detection operation's accuracy, has also improved the convenience of sample thief 1 installation, dismantlement. The sampler 1 in the present embodiment is formed integrally.
As shown in fig. 2, the sample container 2 of this embodiment is a color comparison tube, the inner cavity of the color comparison tube is a sample container 21, the opening of the color comparison tube is a sampler interface 22 for installing the sampler 1, the light-transmitting sidewall of the color comparison tube forms a light entrance port and a light exit port of the sample container 2, and a rubber cap configured to the color comparison tube is used as a fastening member 23 of the sample container 2.
When the liquid sampling and detecting device of the present embodiment is assembled, the sampler interface 22 of the colorimetric tube is sealed by a rubber cap, and then the end of the second section 13 of the sampler 1 is used to puncture the rubber cap, so that the sampling end of the sampler 1 passes through the rubber cap, and then the punctured part of the crushed aurilave is inserted into the rubber cap.
Example 2
The present embodiment is to collect and detect spring water by using the liquid sampling and detecting system provided in embodiment 1. According to the method described in embodiment 1, the sampler 1, the sample container 2, and the negative pressure generator 3 of the liquid sampling and detecting system are assembled, such that the sample channel, the sample container 21, and the negative pressure generator 3 are interconnected, in this embodiment, the sample container 2 is a colorimetric tube, before assembly, nitrogen-doped carbon freeze-dried powder is pre-loaded in the colorimetric tube, the fastener 23 is an elastic rubber cap, the negative pressure generator 3 is an ear-washing ball, and after the ear-washing ball is flattened, a puncture part is also inserted into the rubber cap, such that a certain negative pressure state is maintained in the sample channel and the sample container 21, a section of the sampler 1 is placed in mountain spring water, the volume of the ear-washing ball is constant, the deformation amount of the ear-washing ball is controlled, such that the ear-washing ball can provide a constant negative pressure, and under a constant negative pressure, a constant amount of water sample enters the sample channel through the sample inlet 11, a water sample enters the colorimetric tube through the sample channel and the sample outlet 14 and reacts with the nitrogen-doped carbon freeze-dried powder pre-loaded in the colorimetric tube. If the mountain spring water contains Fe3+, Fe3+ can perform a complex reaction with the oxygen-containing functional groups on the surfaces of the carbon dots to quench the fluorescence, so that the content of Fe3+ in the mountain spring water can be detected by directly reading the materials in the color tube by using a fluorescence intensity tester.
Example 3
This embodiment is to collect and detect a liquid medicine by using the liquid sampling and detecting system provided in embodiment 1. According to the method described in embodiment 1, the sampler 1, the sample holding part 2, and the negative pressure generating device 3 of the liquid sampling and detecting system are assembled, such that the sample channel, the sample holding cavity 21, and the negative pressure generating device 3 are communicated with each other, in this embodiment, the sample holding part 2 is a colorimetric tube, before assembly, nitrogen-doped carbon freeze-dried powder is pre-loaded in the colorimetric tube, the fastening member 23 is an elastic rubber cap, the negative pressure generating device 3 is an ear washing ball, and a puncture part of the ear washing ball is inserted into the rubber cap after being flattened, such that a certain negative pressure state is maintained in the sample channel and the sample holding cavity 21, a section of the sampler 1 is placed into the liquid medicine, the volume of the ear washing ball is constant, the deformation amount of the ear washing ball is controlled, such that the ear washing ball can provide a fixed negative pressure, and a fixed amount of liquid sample enters the sample channel through the sample injection port 11 under the fixed negative pressure, the liquid sample enters the cuvette through the sample channel and through the sample outlet 14, and reacts with the lyophilized powder pre-loaded in the cuvette. The pH value of the liquid medicine is different, and the photoluminescence performance of the carbon dots is changed, so that the fluorescence intensity tester is directly utilized to read materials in the color tube, and the pH value of the liquid medicine can be detected.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the true spirit and scope of the present invention.
Claims (10)
1. A liquid sampling and detection system, comprising:
the sampler comprises a sample channel, the sample channel comprises a sample inlet end and a sample outlet end, the sample inlet end is provided with a sample inlet, and the sample outlet end is provided with the sample outlet;
the sample containing part is provided with a sample containing cavity, the sample containing cavity is provided with a sampler interface, and the sampler interface is used for inserting the sample outlet end so as to realize the assembly of the sample containing part and the sampler;
a negative pressure generating device for forming a negative pressure channel from the sample channel.
2. The liquid sampling inspection system of claim 1, wherein: taking the direction pointing to the sample outlet end from the section as a sample inlet direction; along advance kind direction be equipped with first district section and second district section in proper order on the kind passageway, just the internal diameter of first district section is the trend of change of increase.
3. The liquid sampling inspection system of claim 2, wherein: the first section is connected with the second section, and a handle is arranged at the joint of the first section and the second section.
4. The liquid sampling inspection system of claim 1, wherein: the sample holding part also comprises a fastener, and the fastener is matched and installed with the interface of the sampler and is matched and installed with the sample outlet end to realize the connection of the sampler and the sample holding part.
5. The liquid sampling inspection system of claim 4, wherein: the sample holding part and the sampler are detachably mounted.
6. The liquid sampling inspection system of claim 5, wherein: the fastener is an elastomer.
7. The liquid sampling inspection system of claim 1, wherein: and communicating the sample passage, the sample accommodating chamber and the negative pressure generating device with each other to realize the assembly of the sampler, the sample accommodating part and the negative pressure generating device, wherein the negative pressure generating device is used for enabling the inside of the sample passage and the inside of the sample accommodating chamber to form a negative pressure area communicated with each other.
8. The liquid sampling inspection system of claim 1, wherein: and a light incident port and a light emergent port are arranged on the wall of the sample accommodating cavity.
9. A liquid sample detection method using the liquid sampling detection system according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, extending the section of the sampler into a sample to be detected;
s2, the sample channel forms a negative pressure channel by using the negative pressure generating device, and the sample to be detected enters the sample channel through the sample inlet under the action of negative pressure, and then enters the sample accommodating cavity through the sample channel and the sample outlet in sequence;
and S3, directly carrying out index detection of required representation on the sample to be detected accommodated in the sample accommodating cavity.
10. A liquid sample detection method using the liquid sampling detection system according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, placing a reaction reagent for reacting with a sample to be detected in the sample accommodating cavity;
s2, extending the section of the sampler into the sample to be detected;
s3, the sample channel forms a negative pressure channel by using the negative pressure generating device, and the sample to be detected enters the sample channel through the sample inlet under the action of negative pressure, and then enters the sample accommodating cavity through the sample channel and the sample outlet in sequence;
s4, enabling the sample to be detected to fully react with the reaction reagent;
and S5, after the reaction is finished, directly carrying out index detection of required representation on the reaction product contained in the sample containing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210326341.2A CN114636590A (en) | 2022-03-30 | 2022-03-30 | Liquid sampling detection device and liquid sample detection method applying same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210326341.2A CN114636590A (en) | 2022-03-30 | 2022-03-30 | Liquid sampling detection device and liquid sample detection method applying same |
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| Publication Number | Publication Date |
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| CN114636590A true CN114636590A (en) | 2022-06-17 |
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| CN202210326341.2A Pending CN114636590A (en) | 2022-03-30 | 2022-03-30 | Liquid sampling detection device and liquid sample detection method applying same |
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- 2022-03-30 CN CN202210326341.2A patent/CN114636590A/en active Pending
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