CN209542250U - A kind of Solid Phase Extraction sample feeding pipe - Google Patents

Abstract

The utility model belongs to solid phase extraction techniques field, is related to a kind of Solid Phase Extraction sample feeding pipe, including tube body, and the top and bottom of tube body are respectively arranged with tube body import and tube body outlet；The adapted seat for connecting with SPE pillar is provided in tube body outlet；Adapted seat is coaxial with tube body.The utility model provides the Solid Phase Extraction sample feeding pipe that a kind of structure is simple, Solid Phase Extraction test consistency and repeatability can be improved.

Description

A kind of Solid Phase Extraction sample feeding pipe

Technical field

The utility model belongs to solid phase extraction techniques field, is related to a kind of Solid Phase Extraction sample feeding pipe, more particularly to a kind of suitable The Solid Phase Extraction sample feeding pipe of SPE pillar connecting pin for different volumes.

Background technique

Solid Phase Extraction is one of commonly used purification separation means in testing and analyzing, while it is special to be suitable for different compounds The SPE pillar multiplicity wide in variety of the commercialization of opposite sex separation, provides for its extensive use in modern analysis laboratory Good material base.And fluid sample requires to be extracted with liquid reagent before carrying out Solid phase extraction separation, is Target substance is fully extracted as far as possible, and Extraction solvent used must have certain volume, therefore carry out solid phase extraction It waits for that the solution of sample introduction often has certain volume when taking, and differs generally between 10-50mL.And carrying out Solid Phase Extraction When, only about 2/3rds of total volume can be used to place liquid solution to be processed SPE pillar, that is, every time only (its volume of the SPE pillar of different size is different, and the space that the pillar of 1mL only has about 0.5mL is to be processed for storing by 0.5mL-6mL Solution is used, and the pillar of 3mL only has the space of about 2mL for storing solution to be processed, and so on, the pillar of 10mL only has about The space of 6mL is for storing solution to be processed) volume used for storage liquid to be treated.In only equal SPE pillar wait locate It, could be toward the SPE pillar the inside of the top after reason liquid flows out in a part of liquid to following collecting pipe through Solid Phase Extraction New solution to be processed is added, repeatedly, until all liquid to be treated loadings finish, operator could be from this anti- It pulls out in multiple artificial loading sample-adding work, adjustment of taking a quick nap.Simultaneously as different operators has different behaviour Make mode, e.g., liquid of some operator's habits in solid phase extraction column starts to be loaded again when flowing out half, has Operator be accustomed in solid phase extraction column liquid outflow 90% or more when again sample-adding (be added in every time in this way solid phase extraction Take the liquid in pillar more than the former, it is possible to reduce total sample-adding number).In this way, different operators has different points Measurement result is analysed, easily introducing random error.Therefore, the sample feeding pipe of 10-50mL can disposably be stored as existing by being badly in need of one kind There is the auxiliary element of solid phase extraction system, operator freed from existing artificial sample-adding loading work repeatedly, And the serialization for improving whole operation is horizontal, improves the consistency and repeatability of experiment, avoids operating not because of different personnel Random error is tested caused by consistency.

Utility model content

In order to solve the above technical problems in background technology, the utility model provide a kind of structure it is simple, can Improve the Solid Phase Extraction sample feeding pipe of Solid Phase Extraction test consistency and repeatability.

To achieve the goals above, the utility model adopts the following technical solution:

A kind of Solid Phase Extraction sample feeding pipe, it is characterised in that: the Solid Phase Extraction sample feeding pipe includes tube body, the top of tube body with And bottom is respectively arranged with tube body import and tube body outlet；It is provided in tube body outlet for being connect with SPE pillar Adapted seat；The adapted seat and tube body are coaxial.

The section of above-mentioned adapted seat is in back taper or step.

When the section of above-mentioned adapted seat is step, the height of step is greater than the depth of step in the adapted seat.

Above-mentioned adapted seat is at least two stage ranks.

Above-mentioned adapted seat is quadravalence step.

Above-mentioned solid phase extraction sample feeding pipe further includes the top cover being arranged in tube body import and is arranged in tube body exit Bottom cap.

Above-mentioned tubular body is cylindrical polyethylene plastic tube.

Scale is provided on the side wall of above-mentioned tubular body, the unit of the scale is mL.

The maximum range of above-mentioned scale is 50mL.

The utility model has the advantages that:

It includes tube body that the utility model, which provides a kind of Solid Phase Extraction sample feeding pipe, and the top and bottom of tube body are respectively set There are tube body import and tube body outlet；The adapted seat for connecting with SPE pillar is provided in tube body outlet；Adapted seat and tube body Coaxially.The adapted seat of Solid Phase Extraction sample introduction bottom of the tube provided by the utility model SPE pillar connected to it forms a connection Logical system, vacuum pumping action formed negative pressure under, in sample feeding pipe liquid to be processed will flow continuously through SPE pillar into Row Solid phase extraction separation.Due to Solid Phase Extraction sample introduction bottom of the tube adapted seat there are many different bores nozzle be applicable to it is a variety of The connecting pin of the SPE pillar of different volumes.Since sample feeding pipe and SPE pillar are disposable product, difference is avoided Cross contamination between sample.The utility model structure is simple, and the liquid of different volumes can be disposably stored in by operator Operator can be freed from sample-adding loading work repeatedly without being repeatedly loaded loading, save people by sample feeding pipe Power improves the continuity of whole operation, improves the consistency and repeatability of experiment.Simultaneously as avoiding different operation Caused by personnel the problem of there may be loading inconsistencies the problem of random error, it can flexibly and easily be applied to 10- SPE pillar solid phase extraction manipulations under 50mL different volumes sample and various flow velocitys needs.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of Solid Phase Extraction sample feeding pipe provided by the utility model；

Wherein:

1- top cover；2- tube body；3- adapted seat；The bottom 4- cap.

Specific embodiment

In the following, technical solution provided by the utility model is described in detail in conjunction with Fig. 1:

The utility model provides a kind of Solid Phase Extraction sample feeding pipe, including tube body 2, the top of tube body 2 and bottom difference It is provided with tube body import and tube body outlet；The adapted seat 3 for connecting with SPE pillar is provided in tube body outlet；Adapted seat 3 It is coaxial with tube body 2.

The section of adapted seat 3 is in back taper or step；When the section of adapted seat 3 is step, step in adapted seat 3 Height be greater than step depth, adapted seat 3 be at least two stage ranks, adapted seat 3 be preferably quadravalence step.

Solid Phase Extraction sample feeding pipe further includes the top cover 1 being arranged in tube body import and the bottom cap that tube body exit is arranged in 4.Top cover is blue or Chinese red rigid plastics material；Tube body, bottom used by the utility model fit seat, bottom cap is transparent poly- Vinyl plastics material.Top cover 1 connect to reach the antipollution effect of sealing with tube body 2 by screw thread.

Tube body 2 is cylindrical polyethylene plastic tube；Scale is provided on the side wall of tube body 2, the unit of scale is mL, scale Maximum range be 50mL.

Solid Phase Extraction sample feeding pipe bottom used by the utility model, which is fitted, 4 kinds of different bores such as diameter 0.6cm's on seat Pipe end adapted seat, the pipe end adapted seat of diameter 0.9cm, the pipe end adaptation of the pipe end adapted seat of diameter 1.2cm and diameter 1.6cm The adapted seat of seat is with the connecting pin of the SPE pillar suitable for 4 kinds of different volumes.Pipe end if diameter is 0.6cm is suitable for and 1mL SPE pillar connect and use, the pipe end that diameter is 0.9cm is suitable for connect use with the SPE pillar of 3mL, and diameter is 1.2cm's Pipe end is suitable for connecting use with the SPE pillar of 6mL, and the pipe end that diameter is 1.6cm is suitable for connecting with the SPE pillar of 10mL making With.The pipe end that bottom need to only be fitted to device difference bore when use is directed at the SPE pillar of corresponding bore and is directly connected to be locked, at this time Sample feeding pipe and SPE pillar and solid-phase extraction device have formd the entirety of a sealing, if not opening solid-phase extraction device Vacuum pump formed suction function, liquid would not in sample feeding pipe flow down, only opening vacuum pump formed negative pressure, entirely Device can just start to carry out Solid phase extraction separation under the action of negative pressure.Solid Phase Extraction sample introduction bottom of the tube used by the utility model Entire bottom end is lived equipped with special bottom cap sleeve, keeps the cleaning of sampling system pollution-free.

Claims (9)

1. a kind of Solid Phase Extraction sample feeding pipe, it is characterised in that: the Solid Phase Extraction sample feeding pipe includes tube body (2), the top of tube body (2) Portion and bottom are respectively arranged with tube body import and tube body outlet；It is provided in the tube body outlet for connecting with SPE pillar The adapted seat (3) connect；The adapted seat (3) and tube body (2) are coaxial.

2. Solid Phase Extraction sample feeding pipe according to claim 1, it is characterised in that: the section of the adapted seat (3) is in back taper Shape or step.

3. Solid Phase Extraction sample feeding pipe according to claim 2, it is characterised in that: the section of the adapted seat (3) is step When shape, the height of step is greater than the depth of step in the adapted seat (3).

4. Solid Phase Extraction sample feeding pipe according to claim 3, it is characterised in that: the adapted seat (3) is at least two stages Rank.

5. Solid Phase Extraction sample feeding pipe according to claim 4, it is characterised in that: the adapted seat (3) is quadravalence step.

6. -5 any Solid Phase Extraction sample feeding pipe according to claim 1, it is characterised in that: the Solid Phase Extraction sample feeding pipe is also Including the top cover (1) being arranged in tube body import and the bottom cap (4) that tube body exit is arranged in.

7. Solid Phase Extraction sample feeding pipe according to claim 6, it is characterised in that: the tube body (2) is cylindrical polyethylene Plastic tube.

8. Solid Phase Extraction sample feeding pipe according to claim 7, it is characterised in that: be provided on the side wall of the tube body (2) Scale, the unit of the scale are mL.

9. Solid Phase Extraction sample feeding pipe according to claim 8, it is characterised in that: the maximum range of the scale is 50mL.