CN201710998U - Continuous matrix solid phase extraction column - Google Patents

Abstract

The utility model relates to a continuous matrix solid phase extraction column, which comprises column bodies, inlets (5) on the tops of the column bodies and outlets (1) on the bottoms of the column bodies, wherein the inner and outer diameters of the outlets are less than those of the column bodies; the column bodies are divided into a base column (2) on the lower part and a continuous column (7) on the upper part; both the inner walls of the inlets (5) of the base column and the continuous column are provided with ring-shaped grinding surfaces, while both the outer walls thereof are provided with upper joints (4) with male threads; and the outer wall of the outlet (1) of the continuous column is also provided with a ring-shaped grinding surface (8) and a lower joint (6) with a female thread. The utility model relates to chemical experiment equipment, which is special for solid phase extraction of a matrix. Compared with the prior art, the utility model has the advantages of capability of being used repeatedly and capability of lengthening the length as required, overcomes the defects of high consumption and high cost caused by once use and the defects of difficult column packing and infilling, difficulty in carrying out concentration extraction on all samples and poor universality of the glass extraction column with the fixed length, and improves the universality.

Description

Splice matrix solid-phase extraction column

Technical field

The utility model relates to a kind of equipment of chemical industry, is the matrix solid-phase extraction column of spreading as required.

Background technology

It is increasingly sophisticated that modern separate analytical technique is faced with analytic target, and the content of the relevant composition of analyte is more and more lower, and for this reason, the The pretreatment technology is outstanding in sample analysis to show important.The matrix solid phase extraction techniques is the sample pretreatment technology that is based upon a kind of Separation of Solid and Liquid extraction on the solid phase extraction techniques basis, testing sample that directly will be through mixing and grinding and adsorbent etc. are as the matrix extraction column of packing into, take off to wash and concentrate with solvent and finish The pretreatment.General solid-phase extraction column, have for disposable product, with after promptly abandon, cause waste, big for the extraction of batch samples with post quantity, extract the cost height; But though and laboratory used nature of glass solid-phase extraction column repeated application, length is fixed, the post internal volume is less, the dress post tamps difficulty, and is difficult to all samples is carried out extracting and enriching, versatility is poor.

The utility model content

The technical problems to be solved in the utility model provides a kind of splice matrix solid-phase extraction column.

The technical scheme that solves this technical problem is: this splice matrix solid-phase extraction column, comprise the import at cylinder, cylinder top and the outlet of bottom, the interior external diameter of outlet is less than the interior external diameter of cylinder, cylinder is divided into the pilum of bottom and the continuous post on top, the inwall of pilum and continuous post import all has the flour milling of annular, outer wall has the top connection of pin thread, and the outer wall of continuous column outlet also has the flour milling of annular and the lower contact of negative thread.

On said pilum and the continuous post scale is arranged.

The beneficial effects of the utility model are can experimental actual needs, to the extraction column lengthening that continues, the joint that can continue, two joint or more pieces, continue convenience, combination firmly, both reduce the consuming cost of extraction, increased the convenience that the dress post tamps again, improved versatility.

Description of drawings

Fig. 1 is a pilum structural representation of the present utility model.

Fig. 2 is a continuous rod structure schematic diagram of the present utility model.

Fig. 3 concerns schematic diagram for user mode of the present utility model continues.

The specific embodiment

The utility model is described in detail below in conjunction with embodiment and with reference to accompanying drawing: see Fig. 1, pilum 2 of the present utility model is on the basis of existing solid-phase extraction column, is added with the top connection 4 of pin thread in external wall of upper portion, and the inwall layout of import 5 is circularized flour milling; Fig. 2 shows continuous post 7 structures of the present utility model, external wall of upper portion also has top connection 4, and the bottom outer wall has the lower contact 6 of negative thread, and the inwall of import 5 also layout circularizes flour milling, the outer wall of outlet 1 has annular flour milling 8, cooperates with the annular flour milling with import 5 inwalls when continuing.Scale 3 is arranged on the outer wall of pilum 2 and continuous post 7, and pilum equates that with the cylinder external diameter of continuous post internal diameter equates that also the size of each top connection 4 is consistent with the shape specification of screw thread, the size of lower contact 6 and specification and top connection 4 couplings.Stainless steel be made or be used to upper and lower joint 4 and 6 can with the glass homogeneous material of cylinder.External diameter is all less than the interior external diameter of cylinder separately in the outlet of pilum and continuous post, outlet 1 shape of pilum is identical with used solid-phase extraction column with specification, the bore of the outlet 1 of continuous post 7 is interior slightly to be received, inside and outside wall has a narrow inclined-plane, this inclined-plane outer wall is ringwise flour milling, the flour milling that had both helped import 5 inwalls in below when continuing cooperates, and is beneficial to again during use and shelves sieve plate 9 as required.Fig. 3 shows the relation of continuing of each parts of the utility model user mode, be successively from top to bottom air compressor 10, continuous post 7, pilum 2 and can be connected the generation negative pressure with vavuum pump connect liquid bottle 11.Earlier pilum and continuous post are continued firmly during use, again with determinand, adsorbents etc. grind evenly as matrix by experimental design proportion requirement proportioning, a sieve plate 9 is placed pilum 2 base portions or two tops that sieve plate 9 places pilum 2 and continuous post 7 base portions promptly to export respectively, on sieve plate 9, add matrix 12, through vibration make matrix all even closely knit after, 1 place connects liquid bottle 11 in pilum 2 outlets, in post, add solvent from the import 5 of the top and carry out drip washing, air compressor and/or negative pressure device with injector for medical purpose 10 and so on quicken rate of extraction, the amount of adding matrix etc. can reflect in scale 3, after connecing liquid bottle collection leacheate, after nitrogen blows concentrated constant volume, just finish extraction work again, can carry out check and analysis.

This extraction column is made of transparent hard material, from taking into consideration by flour milling and screw thread, cylinder with unorganic glass matter for well, though lucite is difficult for breaking up easy season cracking.The specification of screw thread, shape can have multiple scheme, and this is that colleague's those of ordinary skill can be understanded perforation, no longer one by one accompanying drawing and carefully stating.The band pin thread top connection 4 should with cylinder one apply vitreous, the band negative thread lower contact 6 also can make the formula of lid with stainless steel, but this need with the outlet 1 outer wall produce a bulge loop tighten and locate so that be enclosed within the stainless steel cover physical efficiency of cylinder outer wall.

Claims (2)

1. splice matrix solid-phase extraction column, comprise the import (5) of cylinder, the pre-portion of cylinder and the outlet (1) of bottom, the interior external diameter of outlet is less than the interior external diameter of cylinder, it is characterized in that cylinder is divided into the continuous post (7) on pilum of bottom (2) and top, the inwall of the import of pilum and continuous post (5) all has the flour milling of annular, outer wall has the top connection (4) of pin thread, and the outer wall of continuous column outlet (1) also has the flour milling (8) of annular and the lower contact (6) of negative thread.

2. splice matrix solid-phase extraction column as claimed in claim 1 is characterized in that on said pilum (2) and the continuous post (7) scale (3) being arranged.

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