CN101271094B - Zwitterion analysis system of ion chromatographic instrument - Google Patents
Zwitterion analysis system of ion chromatographic instrument Download PDFInfo
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- CN101271094B CN101271094B CN2008100945833A CN200810094583A CN101271094B CN 101271094 B CN101271094 B CN 101271094B CN 2008100945833 A CN2008100945833 A CN 2008100945833A CN 200810094583 A CN200810094583 A CN 200810094583A CN 101271094 B CN101271094 B CN 101271094B
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Abstract
An analysis system of anions and cations of an ion chromatograph comprises an anion analysis system and a cation analysis system which are mutually independent; in the anion analysis system, a conveying pipeline of anion eluting liquid and a sample to be analyzed is directly communicated with the inlet end of an anion guard column, the outlet end of the anion guard column is directly communicated with an anion analysis column, the anion analysis column is directly communicated with an anion inhibitor by the pipeline, the anion inhibitor is directly communicated with a conductivity cell by the pipeline; and in the cation analysis system, the conveying pipeline of cation eluting liquid and the sample to be analyzed is directly communicated with the inlet end of a cation guard column, the outlet end of the cation guard column is directly communicated with a cation analysis column, the cation analysis column is directly communicated with a cation inhibitor by the pipeline, and the cation inhibitor is directly communicated with the conductivity cell by the pipeline. The problem of cross pollution can be thoroughly solved by leading the anion eluting liquid and the cation eluting liquid to flow through the respective independent pipeline.
Description
Technical field
The present invention relates to a kind of Zwitterion analysis system of ion chromatographic instrument, particularly, relate to Zwitterion analysis system of ion chromatographic instrument with the two shared conductivity cell structures of analytical column of yin, yang ion.
Background technology
At present, according to the common two analytical columns and the ion chromatograph of single conductance cell, when needs switch between the zwitterion analytic system, generally all realize by its six-way valve built-in, gas-powered.
Because before this six-way valve, afterwards and the pipeline of the flow of liquid warp when flowing through this six-way valve be shared, therefore, just be very easy to cause between the negative ion that remains in those common conduit or the kation leacheate chemical reaction take place, generate plurality of inorganic salt.
And in a single day these inorganic salts flow into valuable parts such as the analytical column, rejector of back, can cause irreversible pollution damage to these parts, and net result is to change these valuable parts.
Summary of the invention
The purpose of this invention is to provide a kind of Zwitterion analysis system of ion chromatographic instrument, it can avoid having the problem of cross pollution between the zwitterion system of ion chromatograph of twin columns list conductivity cell structure.
Further purpose of the present invention provides a kind of Zwitterion analysis system of ion chromatographic instrument, it is by the original pneumatic transfer valve of short circuit, again the original flow of liquid of layout is through pipeline, make negative ion leacheate and the kation leacheate independently pipeline of flowing through separately, no longer include the chance that is in contact with one another, thereby thoroughly solve the cross-contamination issue between them.
For this reason, the invention provides a kind of Zwitterion analysis system of ion chromatographic instrument, comprise negative ion guard column, anion analysis post, kation guard column, cation analysis post, negative ion rejector, kation rejector and conductance cell, it is characterized in that Zwitterion analysis system of ion chromatographic instrument comprises separate anion analysis system and cation analysis system; In the anion analysis system, the conveyance conduit of negative ion leacheate and sample to be analyzed directly is communicated with the inlet end of negative ion guard column; The endpiece of this negative ion guard column directly is communicated with the anion analysis post; This anion analysis post directly is communicated with the negative ion rejector through pipeline; And the negative ion rejector directly is communicated with conductance cell through pipeline; And in the cation analysis system, the conveyance conduit of kation leacheate and sample to be analyzed directly is communicated with the inlet end of kation guard column; The endpiece of this kation guard column directly is communicated with the cation analysis post; This cation analysis post directly is communicated with the kation rejector through pipeline; And the kation rejector directly is communicated with conductance cell through pipeline.
Particularly, described separate anion analysis system and cation analysis system are respectively that the zwitterion leacheate has separately independently pipeline, the cation analysis system is in the Zwitterion analysis system of ion chromatographic instrument of holding state when carrying out anion analysis, and the negative ion system is in the Zwitterion analysis system of ion chromatographic instrument of holding state when carrying out cation analysis.
According to the present invention, the leacheate conveyance conduit that is connected to the post transfer valve is directly connected to the inlet end of guard column, the drip washing endpiece with rejector directly is linked into conductance cell simultaneously.The method of attachment of yin, yang ion analysis system is identical.
In the present invention,, avoided of the direct contact of zwitterion leacheate, thereby solved the problem of the originally intrinsic zwitterion system cross pollution of this equipment in common conduit by the original pneumatic post transfer valve mechanism of change equipment.
To brief description of drawings
Fig. 1 is according to the flow of liquid of the ion chromatograph zwitterion analytic system of the prior art syndeton synoptic diagram through pipeline.
Fig. 2 is that flow of liquid during according to negative ion systematic analysis of the present invention is through the syndeton synoptic diagram of pipeline.
Fig. 3 is that flow of liquid when analyzing according to cationic systems of the present invention is through the syndeton synoptic diagram of pipeline.
Embodiment
1-3 describes embodiments of the invention below in conjunction with accompanying drawing.
In Fig. 1, Fig. 2 and Fig. 3; Reference numeral 1 expression negative ion guard column; Reference numeral 2 expression anion analysis posts; Reference numeral 3 expression kation guard columns; Reference numeral 4 expression cation analysis posts, Reference numeral 5 expression negative ion rejectors, Reference numeral 6 expression kation rejectors; Reference numeral 7 expression conductance cells, and Reference numeral 8 expression transfer valves.
Zwitterion analysis system of ion chromatographic instrument according to prior art; as shown in Figure 1; when carrying out anion analysis; the negative ion leacheate carries sample to be analyzed and enters post transfer valve 8 through pipeline 108 together; enter negative ion guard column 1 through pipeline 81; after flowing out, negative ion guard column 1 enters anion analysis post 2; enter negative ion rejector 5 through pipeline 25; after 5 outflows of negative ion rejector; get back to post transfer valve 8 again through pipeline 58; enter conductance cell 7 from 8 outflows of post transfer valve through pipeline 120 at last,, will be discharged in the waste water receiving trap through behind the conductance cell 7.
When carrying out anion analysis, high-purity deionized water flows into negative ion rejector 5 through pipeline 105, and the waste water of negative ion rejector 5 generations is simultaneously discharged through pipeline 50.
Similarly; when carrying out cation analysis; it also is to enter post transfer valve 8 through pipeline 108 together that sample to be analyzed is carried in kation drip washing; at this moment; switching by transfer valve; kation leacheate and sample to be analyzed can flow into kation guard column 3 through pipeline 83; flow into cation analysis post 4 through kation guard column 3; flow into kation rejector 6 through pipeline 46; after 6 outflows of kation rejector, enter post transfer valve 8 again through pipeline 68, flow into conductance cells 7 through pipeline 120 equally at last; through behind the conductance cell 7, will be discharged in the waste water receiving trap.
When carrying out cation analysis, high-purity deionized water flows into kation rejector 6 through pipeline 106, and the waste water of kation rejector 6 generations is simultaneously discharged through pipeline 60.
When 8 work of post transfer valve, the high-purity compressed nitrogen that is used as driving power enters from the gas pipeline 80 of the other end through gas pipeline 118 discharges.
In sum, in the ion chromatography system of prior art, the leacheate of zwitterion is to enter post transfer valve 8 by same pipeline 108, entering conductance cell 7 from transfer valve 8 outflows at last also is shared same pipeline 120, so, just cause the zwitterion leacheate 108,120 li chemical reaction to take place, system is caused serious pollution in these common conduit.
According to the present invention; as shown in Figure 2; when carrying out anion analysis; negative ion leacheate and sample to be analyzed directly are linked into the inlet end of negative ion guard column 1 through pipeline 15; behind anion analysis post 2; enter negative ion rejector 5 through pipeline 25, after flowing out from negative ion rejector 5, directly enter conductance cell 7 through pipeline 125.
When carrying out anion analysis, high-purity deionized water flows into negative ion rejector 5 through pipeline 105, and the waste water of negative ion rejector 5 generations is simultaneously discharged through pipeline 50.When carrying out anion analysis, the cation analysis system is in holding state.
As a same reason, as shown in Figure 3, when carrying out cation analysis, kation leacheate and sample to be analyzed are directly connected to the inlet end of kation guard column 3 through pipeline 16, behind cation analysis post 4, enter kation rejector 6 through pipeline 46.After 6 outflows of kation rejector, directly enter conductance cell 7 through pipeline 135.
When carrying out cation analysis, high-purity deionized water flows into kation rejector 6 through pipeline 106, and the waste water of kation rejector 6 generations is simultaneously discharged through pipeline 60.When carrying out cation analysis, the negative ion system is in holding state.
This shows, handover mechanism by the original zwitterion analytic system of change equipment, when no matter carrying out negative ion or cation analysis, it all is liquid flow path pipeline fully independently, avoided any one the direct contact of zwitterion leacheate, thereby thoroughly solved the problem of zwitterion system cross pollution at pipeline.
Claims (2)
1. Zwitterion analysis system of ion chromatographic instrument; comprise negative ion guard column (1), anion analysis post (2), kation guard column (3), cation analysis post (4), negative ion rejector (5), kation rejector (6) and conductance cell (7); it is characterized in that
Zwitterion analysis system of ion chromatographic instrument comprises separate anion analysis system and cation analysis system, and described separate anion analysis system and cation analysis system are respectively that the zwitterion leacheate has separately independently pipeline;
In the anion analysis system, the conveyance conduit of negative ion leacheate and sample to be analyzed (15) directly is communicated with the inlet end of negative ion guard column (1); The endpiece of this negative ion guard column (1) directly is communicated with anion analysis post (2); This anion analysis post (2) directly is communicated with negative ion rejector (5) through first pipeline (25); And negative ion rejector (5) directly is communicated with conductance cell (7) through second pipeline (125); And
In the cation analysis system, the conveyance conduit of kation leacheate and sample to be analyzed (16) directly is communicated with the inlet end of kation guard column (3); The endpiece of this kation guard column (3) directly is communicated with cation analysis post (4); This cation analysis post (4) directly is communicated with kation rejector (6) through the 3rd pipeline (46); And kation rejector (6) directly is communicated with conductance cell (7) through the 4th pipeline (135).
2. Zwitterion analysis system of ion chromatographic instrument as claimed in claim 1, it is characterized in that, described separate anion analysis system and cation analysis system, the cation analysis system is in the Zwitterion analysis system of ion chromatographic instrument of holding state when carrying out anion analysis, and the negative ion system is in the Zwitterion analysis system of ion chromatographic instrument of holding state when carrying out cation analysis.
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| CN2008100945833A CN101271094B (en) | 2008-05-15 | 2008-05-15 | Zwitterion analysis system of ion chromatographic instrument |
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| CN2008100945833A CN101271094B (en) | 2008-05-15 | 2008-05-15 | Zwitterion analysis system of ion chromatographic instrument |
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| CN101271094B true CN101271094B (en) | 2011-06-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967663A (en) * | 2012-10-31 | 2013-03-13 | 青岛轩汇仪器设备有限公司 | Ion chromatograph with automatic activation device |
| CN105158123A (en) * | 2015-08-31 | 2015-12-16 | 武汉宇虹环保产业发展有限公司 | Online environmental air fine particle water-soluble ion chromatograph |
| CN106814151A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | The measurement apparatus and measuring method of trace anion in a kind of strong basic reagent |
| CN106596770B (en) * | 2016-12-13 | 2019-03-29 | 四川大学 | Simultaneously in on-line automatic analysis water-like micro ammonium ion and nitrite ion low pressure anions and canons chromatography-photometry |
| CN111257493A (en) * | 2018-11-30 | 2020-06-09 | 北京历元仪器有限公司 | Method and device for detecting total amount of anions and cations in water |
| CN113075348A (en) * | 2021-03-31 | 2021-07-06 | 中国核动力研究设计院 | Leacheate preparation method and device for online ion chromatography |
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| CN2227338Y (en) * | 1995-03-28 | 1996-05-15 | 中国石油化工总公司石油化工科学研究院 | Liquid chromatography device for separating dead oil component |
| CN2347170Y (en) * | 1998-10-21 | 1999-11-03 | 中国科学院大连化学物理研究所 | General two-dimensional chromatography interface device |
| CN1392413A (en) * | 2001-06-15 | 2003-01-22 | 中国科学院大连化学物理研究所 | Double column switching chromatograph preparing device for chira medicine saparation |
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- 2008-05-15 CN CN2008100945833A patent/CN101271094B/en active Active
Patent Citations (3)
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|---|---|---|---|---|
| CN2227338Y (en) * | 1995-03-28 | 1996-05-15 | 中国石油化工总公司石油化工科学研究院 | Liquid chromatography device for separating dead oil component |
| CN2347170Y (en) * | 1998-10-21 | 1999-11-03 | 中国科学院大连化学物理研究所 | General two-dimensional chromatography interface device |
| CN1392413A (en) * | 2001-06-15 | 2003-01-22 | 中国科学院大连化学物理研究所 | Double column switching chromatograph preparing device for chira medicine saparation |
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| 张曾子等.双柱切换色谱制备系统设计和实现.《分析化学 仪器装置与实验技术》.2001,第29卷(第11期),第1353-1356页. * |
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