CN218726954U - Low-concentration organic amine detection device containing concentration device - Google Patents
Low-concentration organic amine detection device containing concentration device Download PDFInfo
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- CN218726954U CN218726954U CN202222389659.3U CN202222389659U CN218726954U CN 218726954 U CN218726954 U CN 218726954U CN 202222389659 U CN202222389659 U CN 202222389659U CN 218726954 U CN218726954 U CN 218726954U
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Abstract
The utility model provides a low concentration organic amine detection device who contains enrichment facility, include: a concentrator device, comprising: the absorption liquid bottle, the peristaltic pump, the filter, the ion chromatography device and the absorption tube connected with the devices; the absorption liquid bottle with the filter passes through the absorption tube is connected, absorption tube one end is inserted absorption liquid bottle bottom, the absorption tube other end with the peristaltic pump introduction port is connected, peristaltic pump appearance mouth is connected enrichment facility, enrichment facility connects the ion chromatography device. According to the technical scheme, the ten-way valve and the concentration column are combined to form the concentration device, the concentration device is used for quantitative loop sample injection analysis of ion chromatography, the peristaltic pump conveys a sample to be detected and controls the concentration volume, and therefore the automatic concentration system is formed and is suitable for analyzing low-concentration organic amine samples. Provides a more sensitive detection method and means for accurately detecting the organic amine in the ambient atmosphere.
Description
Technical Field
The utility model relates to an analysis and detection technique specifically relates to a low concentration organic amine detection device who contains enrichment facility.
Background
The ion chromatography can accurately measure about 0.1mg/L of organic amine substances in a liquid sample, and the detection limit of the method is basically 20ug/L; however, the method has inaccurate measurement on samples with the concentration below 0.1mg/L, and cannot measure samples with the concentration below 1 ug/L.
The concentration of organic amine substances in the ambient atmosphere is more than a few to dozens of ng/m < 3 > or even lower. According to the ion chromatography detection method of methylamine, dimethylamine and trimethylamine in the environment atmosphere specified in the environment standard HJ1076-2019, the detection limit of the detection method on organic amine is about ug/m3 magnitude, and the detection on low-concentration organic amine cannot be carried out by simply using the ion chromatography detection method.
Concentration of a liquid sample is often required in order to increase the concentration of the liquid sample. The concentration method of the ion chromatographic analysis liquid sample is realized by utilizing a concentration column, the concentration column is mainly used for high-purity water impurity analysis, and can retain ions in a matrix of the measured volume of water sample, so that the types of analytes are concentrated, and the detection limit is reduced. The concentration column can increase the sensitivity by 2 to 5 orders of magnitude compared to the standard sample quantitation loop. Most of the concentrated columns are connected to a quantitative ring, and manual sample introduction is time-consuming and labor-consuming.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a concentration device mainly comprises concentrated post, concentrated post is the cylinder, concentrated post liquid inlet point and cylinder liquid outlet end inner chamber are provided with the filter membrane, pack in the concentrated post cylinder, include: a concentration column unit, an ion chromatography quantitative ring and a ten-way valve;
the concentration column unit comprises a first concentration column and a second concentration column;
the ten-way valve is provided with ten interfaces which are uniformly distributed on the circular valve body, the first interface of the ten-way valve is connected with the liquid inlet of the ion chromatography quantitative ring, the fifth interface of the ten-way valve is connected with the liquid outlet of the ion chromatography quantitative ring, and the fourth interface of the ten-way valve is connected and communicated with the ninth interface of the ten-way valve; the eighth interface of the ten-way valve is a sample inlet, and the third interface of the ten-way valve is a waste liquid outlet;
two ends of the first concentration column are respectively connected with the second interface of the ten-way valve and the sixth interface of the ten-way valve, and two ends of the second concentration column are respectively connected with the seventh interface of the ten-way valve and the tenth interface of the ten-way valve.
Further, the ion chromatography quantitative ring in the concentration device is replaced by a six-way valve;
the six-way valve is provided with six interfaces which are uniformly distributed on the circular valve body, the first interface of the six-way valve is a sample inlet, the sixth interface of the six-way valve is a liquid outlet, the second interface of the six-way valve is communicated with the first interface of the ten-way valve, and the fifth interface of the ten-way valve is communicated with the fifth interface of the six-way valve.
Further, the positions of the first concentration column and the second concentration column are in central symmetry with the center of the ten-way valve.
Further, the concentration column is a cation high-capacity concentration column.
Further, the method comprises the following steps: the concentration device, the absorption liquid bottle, the peristaltic pump, the filter, the ion chromatography device and the absorption tube connected with the devices;
the absorption liquid bottle with the filter passes through the absorption tube is connected, absorption tube one end is inserted absorption liquid bottle bottom, the absorption tube other end with the peristaltic pump introduction port is connected, peristaltic pump appearance mouth is connected enrichment facility, enrichment facility connects the ion chromatography device.
The filter can filter impurities in the liquid sample to be detected;
the ion chromatography device can perform chemical analysis on the liquid sample;
the concentration device is used for concentrating the concentration of the liquid sample to ensure that the chemical analysis can be carried out;
the sample source unit filters redundant impurities by passing a sample to be detected through the filter; and introducing the liquid to be detected into the concentration device for concentration, and then carrying out chemical analysis by using the ion chromatography device.
Further, the absorption liquid bottle and the peristaltic pump can be replaced by an organic amine online trapping system or an automatic sample injector.
Further, the filter can filter particles with a diameter of 0.22 um.
Further, the flow rate of the peristaltic pump is 0.1-1ml/min.
Further, the absorption tube is a 1/16 Teflon tube.
The technical scheme adopts a concentration method of a concentration column. By constructing and designing an automatic concentration sample injection system and method and adopting a structure that double concentration columns are used in parallel, automatic sample injection can be carried out on one concentration column while the liquid sample is concentrated on the other concentration column, so that the analysis time is shortened; according to the technical scheme, the concentration of the double concentration columns is adopted, so that the content of the organic amine in the liquid to be detected is improved, and the detection limit concentration of the organic amine is reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of an online measurement device provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a ten-way valve and a six-way valve provided in the embodiment of the present invention;
in the figure: 1-absorption liquid bottle; 2-a particle filter; 3-a peristaltic pump; 4-a concentration device; 5-an ion chromatography apparatus; 6-an absorber tube; a fifth interface of the 7-ten-way valve; the 8-ten-way valve second interface; a third interface of the 9-ten-way valve; a fourth interface of the 10-ten way valve; the sixth port of the 11-ten way valve; a 12-ten way valve first interface; 13-ten way valve seventh interface; the eighth port of the 14-ten way valve; a ninth interface of the 15-ten way valve; a tenth interface of the 16-ten way valve; 17-a first concentration column; 18-a second concentration column; 19-the sixth port of the six-way valve; 22-a six-way valve second interface; 23-sixth interface of six-way valve; 24-six way valve first interface.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. All of which belong to the protection scope of the present invention.
The concentration device 4 is in a ten-way valve and six-way valve structure;
as shown in fig. 2, a concentration device mainly comprises a concentration column, the concentration column is a column body, the inner cavities of the liquid inlet end and the liquid outlet end of the concentration column are provided with filter membranes, and the column body of the concentration column is filled with fillers, and the concentration column comprises: a concentration column unit, an ion chromatography quantitative ring and a ten-way valve;
the concentration column unit comprises a first concentration column 17 and a second concentration column 18;
the ten-way valve is provided with ten interfaces which are uniformly distributed on the circular valve body, a first interface 12 of the ten-way valve is connected with a liquid inlet of the ion chromatography quantitative ring, a fifth interface 7 of the ten-way valve is connected with a liquid outlet of the ion chromatography quantitative ring, and a fourth interface 10 of the ten-way valve is connected and communicated with a ninth interface 15 of the ten-way valve; the eighth interface 14 of the ten-way valve is a sample inlet, and the third interface 9 of the ten-way valve is a waste liquid outlet;
two ends of the first concentration column 17 are respectively connected with the ten-way valve second interface 8 and the ten-way valve sixth interface 11, and two ends of the second concentration column 18 are respectively connected with the ten-way valve seventh interface 13 and the ten-way valve tenth interface 16.
In this embodiment, the ion chromatography quantification ring in the concentration device 4 is replaced with a six-way valve;
the six-way valve has six ports: a first interface 24, a second interface 22, a third interface, a fourth interface, a fifth interface 19, and a sixth interface 23; the six interfaces are uniformly distributed on the circular valve body, the first interface 24 of the six-way valve is a sample inlet, the sixth interface 23 of the six-way valve is a liquid outlet, the second interface 22 of the six-way valve is communicated with the first interface 12 of the ten-way valve, and the fifth interface 7 of the ten-way valve is communicated with the fifth interface 19 of the six-way valve.
The positions of the first concentration column 17 and the second concentration column 18 are in central symmetry around the center of a ten-way valve.
Absorption liquid bottle 1 and filter 2 are connected through absorption tube 6, and absorption tube one end is inserted absorption liquid bottle 1 bottom, and filter 2 is connected with 3 introduction ports of peristaltic pump, and the 6 other end of absorption tube is connected with 3 introduction ports of peristaltic pump, and enrichment facility 4 is connected to 3 appearance mouths of peristaltic pump, and enrichment facility 4 is connected ion chromatography device 5.
In this embodiment, as shown in fig. 1, the detection and analysis system constituted by the above concentration device, wherein the concentration column is a cation high-capacity concentration column, comprises: an absorption liquid bottle 1, a peristaltic pump 3, a particle filter 2, an ion chromatography device 5 and an absorption tube 6 connected with the devices, wherein the absorption tube is a 1/16 Teflon tube;
a liquid sample to be detected is contained in the absorption liquid bottle 1; the peristaltic pump 3 provides a power source for the detection system to enable liquid in the system to flow and the flow rate of the liquid in the system to be adjustable, and the flow rate of the peristaltic pump is 0.1-1ml/min; the particle filter 2 can filter impurities in the liquid sample to be measured, and can filter particles with the diameter of 0.22 um; the ion chromatography device 5 is capable of performing chemical analysis on the liquid sample; the concentration device 4 is used for concentrating the concentration of the liquid sample to ensure that the chemical analysis can be carried out.
As shown in fig. 1, the absorption liquid bottle 1 and the particle filter 2 are connected through a 1/16 teflon tube, the 1/16 teflon tube is inserted into the bottom of the absorption liquid bottle 1, the other end is connected with the filter 2, the filter 2 is connected with the other end and connected with the 3 sample inlets of the peristaltic pump, the 3 sample outlets of the peristaltic pump are connected with the concentration device 4, and the concentration device 4 is connected with the ion chromatography device 5.
The sample to be measured passes through the particle filter 2 to filter out redundant impurities; the peristaltic pump 3 provides power to guide the liquid to be detected into the concentration device 4 for concentration, and then the ion chromatography device 5 is used for chemical analysis.
In some optional embodiments, the absorption liquid bottle 1 and the peristaltic pump 3 can be replaced by an organic amine on-line capture system.
In some alternative embodiments, the absorbent solution bottle 1 and peristaltic pump 3 may be replaced with an autosampler.
The successful research and development of the technical scheme can realize the automatic measurement of the organic amine gaseous substances in the indoor and outdoor atmospheric environment and the polluted atmosphere around the emission source, can be used for controlling and monitoring the emission of the atmospheric organic amine pollution source, can also be used for observing the concentration change of the organic amine in the atmospheric environment, and provides favorable research means and methods for the formation mechanism of atmospheric particulate matter pollution.
The foregoing descriptions have been directed to embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. The utility model provides a enrichment facility mainly comprises concentrated post, concentrated post is the cylinder, concentrated post liquid entrance point and cylinder liquid outlet end inner chamber are provided with the filter membrane, concentrated post cylinder intussuseption is filled with the filling, its characterized in that includes: a concentration column unit, an ion chromatography quantitative ring and a ten-way valve;
the concentration column unit comprises a first concentration column and a second concentration column;
the ten-way valve is provided with ten interfaces which are uniformly distributed on the circular valve body, the first interface of the ten-way valve is connected with the liquid inlet of the ion chromatography quantitative ring, the fifth interface of the ten-way valve is connected with the liquid outlet of the ion chromatography quantitative ring, and the fourth interface of the ten-way valve is connected and communicated with the ninth interface of the ten-way valve; the eighth interface of the ten-way valve is a sample inlet, and the third interface of the ten-way valve is a waste liquid outlet;
two ends of the first concentration column are respectively connected with the second interface of the ten-way valve and the sixth interface of the ten-way valve, and two ends of the second concentration column are respectively connected with the seventh interface of the ten-way valve and the tenth interface of the ten-way valve.
2. The concentrating device of claim 1, wherein the ion chromatography quantification ring in the concentrating device is replaced with a six-way valve;
the six-way valve is provided with six interfaces which are uniformly distributed on the circular valve body, the first interface of the six-way valve is a sample inlet, the sixth interface of the six-way valve is a liquid outlet, the second interface of the six-way valve is communicated with the first interface of the ten-way valve, and the fifth interface of the ten-way valve is communicated with the fifth interface of the six-way valve.
3. The concentrator of claim 1, wherein the first and second concentrating columns are positioned in central symmetry about the center of the ten-way valve.
4. The concentrating device of claim 1, wherein the concentrating column is a cationic high capacity concentrating column.
5. A low concentration organic amine detection device that contains enrichment facility, characterized by includes: the concentrator device of any of claims 1 to 4, comprising: the absorption liquid bottle, the peristaltic pump, the filter, the ion chromatography device and the absorption tube connected with the devices;
a liquid sample to be detected is contained in the absorption liquid bottle; the peristaltic pump provides a power source for the detection device, so that the liquid in the device flows and the flow rate is adjustable;
the filter can filter impurities in the liquid sample to be detected;
the ion chromatography device can perform chemical analysis on the liquid sample;
the concentration device is used for concentrating the concentration of the liquid sample to ensure that the chemical analysis can be carried out;
the absorption liquid bottle with the filter passes through the absorption tube is connected, absorption tube one end is inserted absorption liquid bottle bottom, the absorption tube other end with the peristaltic pump introduction port is connected, peristaltic pump appearance mouth is connected enrichment facility, enrichment facility connects the ion chromatography device.
6. The apparatus for detecting low concentration organic amine containing concentration device according to claim 5, wherein the absorption liquid bottle and the peristaltic pump can be replaced by an organic amine on-line capturing system or an autosampler.
7. The apparatus for detecting organic amine in low concentration according to claim 5, wherein the filter is capable of filtering particles with a diameter of 0.22 um.
8. The apparatus for detecting low concentration organic amine containing concentration device according to claim 5, wherein the peristaltic pump flow rate is 0.1-1ml/min.
9. The apparatus for detecting organic amine with low concentration according to claim 5, wherein the absorption tube is a 1/16 Teflon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222389659.3U CN218726954U (en) | 2022-09-05 | 2022-09-05 | Low-concentration organic amine detection device containing concentration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222389659.3U CN218726954U (en) | 2022-09-05 | 2022-09-05 | Low-concentration organic amine detection device containing concentration device |
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| CN218726954U true CN218726954U (en) | 2023-03-24 |
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| CN202222389659.3U Active CN218726954U (en) | 2022-09-05 | 2022-09-05 | Low-concentration organic amine detection device containing concentration device |
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