CN201803993U

CN201803993U - Secondary sample injection cutting purification device for gel chromatography purification system

Info

Publication number: CN201803993U
Application number: CN201020523982XU
Authority: CN
Inventors: 张晨光; 黄文平
Original assignee: Anhui Wanyi Science and Technology Co Ltd
Current assignee: Anhui Wanyi Science and Technology Co Ltd
Priority date: 2010-09-07
Filing date: 2010-09-07
Publication date: 2011-04-20
Anticipated expiration: 2020-09-07

Abstract

The utility model discloses a secondary sample injection cutting purification device for a gel chromatography purification system. The secondary sample injection cutting purification device employs the principle of gel chromatography that substances sequentially flow out of a gel chromatographic column according to sequence of molecular volumes and sizes, macromolecular interference substances flow out of the gel chromatographic column firstly, then micro-molecular target compound flows out subsequently, and the purpose of purification only achieved by finding proper time for collecting the outflow substances and proper time for stopping outflow substance collection so as to separate the target compound from the interference substances. The secondary sample injection cutting purification device can improve separation column efficiency of the chromatographic column, saves packing cost due to the fact that a shorter chromatographic column can be used, and simultaneously achieves the purposes of saving solvent and being environment-friendly.

Description

The cutting sub-sampling purification plant that is used for the gel chromatography cleaning system

Technical field

The utility model relates to a kind of cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, be exactly the special input mode that is used for the gel chromatography cleaning system of pre-treatment purification specifically, after the single injected sampling, set cutting and collect the chromatographic column effluent of certain period, and then sample introduction, carry out chromatographic column and separate, collect the outflow product that merges twice post separation according to practical situations.

Background technology

Gel chromatography (Gel Permeation Chromatography), claim the gel purification chromatogram again, size exclusion chromatograph etc. (Size Exclusion Chromatography) SEC, be called for short GPC, it is a more traditional isolation technics, the pillar of GPC is made up of chemically inert hollow bead, utilizes the principle of size exclusion that sample is separated.

Because micromolecular compound can pass from the hole of filler, and macromolecular compound passes from the filler surrounding space, between micromolecule and the big molecule because the path length difference distance of being flowed through, so big molecule and micromolecule can successively flow out from pillar, play centrifugation, because this isolation technics is not subjected to the influence of the polarity of sample, so for the chromatogram user, be a kind of means that very effectively solve the sample that chromatographic column can not separate, especially for fats, the big molecule chaff interference of protein and pigment, these materials are for chromatographic column, and injection port is abnormally dangerous.And the content in the middle of biogenic sample carried out seeming very necessary once step GPC purification before carrying out sample analysis generally than higher so.

Analyze at general agricultural chemicals/residue of veterinary drug, big molecule chaff interference in the sample substrate is mainly pigment, fat, protein, biogenic chaff interference such as polysaccharide, this class material is for the stratographic analysis of back, be to disturb bigger material, not only can bring high noise, ghost peak, assorted peak, and can pollute the injection port of chromatogram, ion gun, and even whole analytic system, and the life-span of chromatographic column and whole system all had a significant impact, though also have other method to purify, alumina column for example, acidic silica gel post etc., but this class methods majority can be treated analytic sample in various degree absorption is arranged, thereby the recovery of analytical approach is reduced.

At present, shortcoming and defect below gel chromatography exists in purifying the sample use, make it detergent power and be not enough to satisfy the experiment needs, it is less than normal that gel chromatographic columns removes fatty applied sample amount, post is saturated easily, influence separation efficiency, the applied sample amount of the GPC chromatographic column fat that uses as tradition is probably about 0.5-1g, but during agricultural residual and beastly residual in analyzing animal sample and the oil, the content of fat often surpasses 1g in the sample, so traditional solution can reduce the sensitivity of method like this for reducing sampling amount.

The utility model content

The purpose of this utility model provides a kind of cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, promptly according to the principle of gel chromatography, material can be according to the order outflow from gel chromatographic columns successively of molecular volume size sequence, big molecule interfering material can take the lead in flowing out from gel chromatographic columns, be micromolecular target compound subsequently, so for the method for a GPC, when key collects effluent if being to find out, when stop to collect effluent, target compound is separated, to reach the purpose of purification with interfering material.

The technical solution of the utility model is as follows:

A kind of cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, include high-pressure injection pin pump, it is characterized in that: described high-pressure injection pin pump is connected with the 4th valve body and first valve body in turn by pipeline, described first valve body is connected with the loop that is composed in series by chromatographic column, ultraviolet-visible liquid-phase sensor, the 3rd valve body and second valve body by pipeline, first valve body also is connected with first injection annulus, second injection annulus respectively, and first valve body is connected with the high-pressure liquid phase pump by pipeline; Described the 3rd valve body is connected with the sample introduction needle tubing by pipeline.

The described cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, it is characterized in that: described first valve body is two 6 logical valves, second valve body is two 4 same valves, the 3rd valve body is two 4 logical valves, the 4th valve body is two 4 logical valves, described pipeline is stainless-steel tube or polyfluortetraethylene pipe, and diameter is 0.1～5mm.

The described cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, it is characterized in that: the volume of described first injection annulus, second injection annulus is identical or different, is 1～200ml.

The beneficial effects of the utility model:

Than the sample injection method and the sampling device of in the past gel chromatography cleaning system, advantage of the present utility model is as follows:

(1), solved under the big sample size situation problem of reduction separating column separation efficiency behind the column overload;

(2), using under the situation of identical chromatographic column, the separating column that can increase chromatographic column is imitated;

(3), under the situation of identical separation efficient, can use short low post to imitate chromatographic column, save the filler cost, reached the saving solvent simultaneously, the purpose of environmental protection.

Description of drawings

Fig. 1 is the utility model systematic schematic diagram.

Fig. 2 is the gel chromatography spectrogram.

Chromatogram when Fig. 3 seriously transships for gel chromatographic columns.

Fig. 4 is the chromatogram collection of illustrative plates of cutting back sample introduction.

Fig. 5 is cutting sub-sampling purification method total chromatogram spectrogram, and wherein last figure be the chromatogram of post when seriously transshipping, and figure below is for cutting the chromatogram spectrogram of sample introduction second time later on.

Fig. 6 is the working state schematic representation of each road valve body.

Embodiment

Referring to Fig. 1, a kind of cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, include high-pressure injection pin pump 1, high-pressure injection pin pump 1 is connected with the 4th valve body 2 and first valve body 3 in turn by pipeline, the 4th valve of the 4th valve body 2 links to each other by pipeline with first valve of first valve body 3, the 5th of first valve body 3, be connected with by chromatographic column 4 by pipeline between seven valves, ultraviolet-visible liquid-phase sensor 5, the loop that the 3rd valve body 6 and second valve body 7 are composed in series, the 4th of first valve body 3, eight and second, be connected with first injection annulus 8 between six valves respectively, the 3rd valve of second injection annulus, 9, the first valve bodies 3 is connected with high-pressure liquid phase pump 10 by pipeline; The 3rd valve body 6 is connected with sample introduction needle tubing 11 by pipeline.

First valve body is two 6 logical valves, and second valve body is two 4 same valves, and the 3rd valve body is two 4 logical valves, and the 4th valve body is two 4 logical valves, and pipeline is stainless-steel tube or polyfluortetraethylene pipe, and diameter is 0.1～5mm; The volume of first injection annulus, second injection annulus is identical or different, is 1～200ml; Eluting solvent is water, ethanol or acetonitrile solvent.

Below in conjunction with embodiment the utility model is further described:

Referring to Fig. 2, suppose that P1 is big molecule interfering material, and P2, P3 is interested target components, for the P2 after being purified, P3, collecting chromatographic column outflow component mode so should be from the collection that begins of t1 time, from the chromatogram master, flow out fully up to the P3 component, finish to collect chromatographic column again and flow out component, so just obtained material P2 to be analyzed and P3, and they are separated with interfering material P1, yet in some detachment process, because the P1 component is many especially in the sample, as analyze agricultural residual or beastly residual in the oil, owing to the molecular weight of grease (P1) greatly and many especially, caused the applied sample amount overload phenomenon of gel permeation column, thereby the obvious broadening in the peak that makes P1, particularly when P1 seriously transshipped, its eluting peak ending time can overlap with the object mass peak of back, as overlapping, can't reach the purpose that purifies fully thereby caused with the peak of P2.

Referring to Fig. 3,, also there is P1 so in the collection of material if begin to collect the chromatographic column effluent during from t1, disturb impurity not separate completely like this, if begin to collect the chromatographic column effluent during from t2, the recovery of Compound P 2 can be influenced so, and the worst situation is can not reclaim fully.

Reasonably solution is, after first time sample introduction, the chromatographic column of collecting earlier between the t1-t2 flows out component, store, and then the chromatographic column after when collecting t2 flows out component and stores, the first time sample introduction purify finish after, the collection component between the t1-t2 is being separated from newly enter as chromatographic column, so for the second time because the applied sample amount of P1 is less, thereby can reach separating of P1 and P2.

Referring to Fig. 4, the component that merges the later component of current t1 and flowed out after sample introduction t2 time last time can obtain separating fully of material P2 to be analyzed and P3 and interfering material P1, and guarantee the recovery of P2.

Referring to Fig. 5, use cutting sub-sampling purification method to obtain total chromatogram of gel chromatography cleaning system, figure be the chromatogram of post when seriously transshipping above, figure is the chromatogram spectrogram that cuts sample introduction second time later on below.

Referring to Fig. 6, the course of work of each road valve body is as follows:

(1), first injection annulus is full of sample:

The first valve body position A, the second valve body position A, the 3rd valve body position A, the 4th valve body position B, the sample introduction needle tubing moves to sample position to be clean, draws sample by high-pressure injection pin pump, is full of sample to be clean in the first sample ring.

(2), the first injection annulus sample introduction:

The first valve body position B, the second valve body position A, the 3rd valve body position A, the 4th valve body position B, first injection annulus is incorporated the high pressure flow path system into, and the moving phase that pumps of pump is carried sample in first injection annulus and is entered chromatographic column and separate like this.

(3), cutting fraction collection:

When the fraction collection of arrive the setting during time, the first valve body position B, the second valve body position B, the 3rd valve body position A, the 4th valve body position A, the chromatographic column effluent injects second injection annulus, when the fraction collection time finishes by the time, the second valve body position A, at this moment the 3rd valve body position B moves to assembling position by sample introduction needle and collects remaining chromatographic column outflow component.

(4), cutting cut sample introduction:

The first valve body position A, the second valve body position A, the 3rd valve body position A, the 4th valve body position B, second injection annulus is incorporated the high pressure flow path system into, and the moving phase that pumps of pump is carried sample in second injection annulus and is entered chromatographic column and separate like this.

So far once cut the sub-sampling operation and finish, can make up according to actual needs.

(5), sampling system cleans:

The position of above sample introduction high-pressure injection pin pump the 4th valve body when imbibition is in position A, if clean the sample introduction pipeline, as long as the position of the 4th valve body is in position B when the discharge opeing of high-pressure injection pin pump, and so just can the purging system pipeline and the Ge Dao valve body.

Claims

1. cutting sub-sampling purification plant that is used for the gel chromatography cleaning system, include high-pressure injection pin pump, it is characterized in that: described high-pressure injection pin pump is connected with the 4th valve body and first valve body in turn by pipeline, described first valve body is connected with the loop that is composed in series by chromatographic column, ultraviolet-visible liquid-phase sensor, the 3rd valve body and second valve body by pipeline, first valve body also is connected with first injection annulus, second injection annulus respectively, and first valve body is connected with the high-pressure liquid phase pump by pipeline; Described the 3rd valve body is connected with the sample introduction needle tubing by pipeline.

2. the cutting sub-sampling purification plant that is used for the gel chromatography cleaning system according to claim 1, it is characterized in that: described first valve body is two 6 logical valves, second valve body is two 4 same valves, the 3rd valve body is two 4 logical valves, the 4th valve body is two 4 logical valves, described pipeline is stainless-steel tube or polyfluortetraethylene pipe, and diameter is 0.1～5mm.

3. the cutting sub-sampling purification plant that is used for the gel chromatography cleaning system according to claim 1, it is characterized in that: the volume of described first injection annulus, second injection annulus is identical or different, is 1～200ml.