CN2163680Y

CN2163680Y - Liquid-liquid extracting block

Info

Publication number: CN2163680Y
Application number: CN 93213170
Authority: CN
Inventors: 林守麟; 帅琴; 邱海鸥
Original assignee: China University of Geosciences
Current assignee: China University of Geosciences
Priority date: 1993-05-18
Filing date: 1993-05-18
Publication date: 1994-05-04
Anticipated expiration: 2003-05-18

Abstract

The utility model relates to a liquid-liquid extracting block, which is mainly used for extracting and phase splitting the sample in the atomic spectrum analysis. The utility model is composed of a transposing bottle, a separator, an extracting ring and a phase splitter. The transporting bottle is a wide-necked bottle common used. The separator 2 forms a T shape, which is composed of capillary tubes. The extracting ring is a ring coiled by the capillary tubes. The phase splitter comprises an upper and a lower two bubbles connected through a neck slim tube. A branched tube is connected with an opening on the lateral face of the neck slim tube. One tube of the transporting bottle is an inlet, and the other tube is connected with the separator. One tube of the other two tubes of the separator is connected with the extracting ring, and the other tube is an external tapping. The other tube of the extracting ring is communicated with the lower bubble. The upper bubble is communicated with a detector. The branched tube connected to the lateral face of the neck slim tube is an external tapping. The utility model can split the phase of the sample completely. The utility model adopts the integral sample collection fashion; the test precision is enhanced; the peak form of the detection signal obtained is sharp. The utility model under-go-the modification can be used in spectrophotometric analysis.

Description

Liquid-liquid extracting block

The utility model is mainly used in the extraction phase-splitting of sample in the atomic spectroscopic analysis, belongs to G01J3/00.

In the atomic spectroscopic analysis field, the sampling extraction is manual operations substantially, in container, do spectral analysis after the gravity phase-splitting then, labour intensity is big, analysis precision is low, used the high flow injection instruments of automaticity now, once manual operations, analysis speed is fast, and precision also is much improved, the device that wherein extracts phase-splitting is the novel extraction device, (referring to the logical FIA-2400 of the scientific instrument company type flow injection instruments service manual of Chinese Academy of Sciences's letter p.10, and " being used for the design of the continuous flow extracting system of sampling Graphite Furnace Atomic spectral analysis ", analytical chemistry journal Anal.China Acta 232.301(1990)), adopt the thin container of the thick neck of tripe, magnetic stirrer is equipped with in inside, adopts this device, and sample is separated not exclusively, and be test while separating, for the differential expression sampling, caused unnecessary interference, thereby influenced precision, and this device volume is big, the cost height.

In order to solve problems of the prior art, the present invention proposes a kind of liquid-liquid extraction piece, the monoblock type sampling, phase-splitting is complete, has improved measuring accuracy.

The utility model is made up of displacement bottle 1, separation scraper 2, extraction circle 3, phase-splitter 4, neatly is inserted in and makes a monoblock on the duroplasts base.Displacement bottle 1 is suitable for the organic solvent in the water displacement bottle outlet, can be the wide-necked bottle of routine use, has two mouthfuls and insert two pipes on bottle stopper, and a pipe is as import, and a pipe is as outlet, but this mode is leaked gas easily.Can do some improvement to displacement bottle 1, adopt the thick cylindric test tube of thumb, high by 5 ^Cm～9 ^Cm, diameter 14 ^Mm～12 ^MmRespectively open flatly at test tube top, the end, and the top mouth connects tubule as outlet, and end mouth connects tubule as import, guarantees the abundant displacement of organic solvent and water like this, good leak tightness; Separation scraper 2 is three-way pipe commonly used, adopts the material of anti-organic solvent corrosion to make, and better is three to lead to planar five equilibrium, and promptly adjacent two logical angles are 120 °, and three-way pipe is a kapillary, and bore is 0.5 ^Mm～1.5 ^MmAqueous sample and organic solvent are split into the well-regulated segmentation that replaces mutually through behind the separation scraper 2.Extraction circle 3 adopts diameter 0.5 ^Mm～1.5 ^MmKapillary coiled coil, the number of turns 15～30 circle, loop diameter 15 ^Mm～20 ^Mm, extraction circle 3 extracts into organic phase sample to aqueous sample.Good by this device effect of extracting.Phase-splitter 4 is to be made up of upper and lower two bubbles that the neck tubule is communicated with, and has a bite bottom the following bubble, on steep the top and have a bite, neck tubule lateral opening connects an arm.It is little that phase-splitter 4 usefulness glass are made bubble, volume 0.6 ^Ml～1.2 ^Ml, the big volume 5 of following bubble ^Ml～10 ^Ml, a neck tubule and a bore thereof are 0.6 ^Mm～1.2 ^MmThe annexation of this device is that 1 outlet of displacement bottle is connected with separation scraper 2 one pipes, other two pipes of separation scraper 2, the logical extraction circle 3 of one pipe, when being used to test as external tapping, one pipe feeds aqueous sample, another mouth of pipe of extraction circle 3 leads to the following bubble of phase-splitter 4, the then logical detecting device of last bubble, its neck arm supply water inlet organic molten detecting device that is pressed into as external tapping during test.

Fig. 1 is the utility model connection diagram

1. replace bottle; 2. separation scraper; 3. extraction is enclosed; 4. phase-splitter

The utility model operational process is: water is sent in the import of displacement bottle 1 to, organic solvent in the bottle 1 is pushed separation scraper 2, the external tapping of separation scraper 2 is sent into aqueous sample simultaneously, cut apart through separation scraper 2, aqueous sample is split into the well-regulated segmentation that replaces mutually mutually with organic solvent, the 3rd pipe through separation scraper 2 feeds 3 extractions of extraction circle then, thereafter just feed 4 times bubbles of phase-splitter and carry out gravity separation, after treating that organic solvent (lighter than water) all is collected in bubble, regular segmentation stops to enter phase-splitter 4, and water entered from phase-splitter 4 neck arms the organic solvent the last bubble was pressed into the detecting device detection together this moment.Be exactly the monoblock type collecting method like this, changed traditional differential expression collecting method, make the testing result good reproducibility, it is sharp-pointed to detect the signal peak shape, but also can make Elemental Speciation Analysis.

Use the utility model, guarantee that sample is separated fully in the flow injection test, no water sample enters detecting device, avoid unnecessary interference, improved precision, and the collection mode of organic solvent is a monoblock type, the peak shape of the detection signal that obtains is sharp-pointed, good reproducibility.The component volume that uses in the device is little, and cost is low.

The utility model is mainly used in the NITRATE BY FLAME ATOMIC spectral analysis, also can be used for sampling Graphite Furnace Atomic spectral analysis and spectrophotometric analysis through improving.

Claims

1, a kind of liquid-liquid extraction piece, form by general wide-necked bottle formula displacement bottle 1, it is characterized in that also comprising separation scraper 2, extraction circle 3, phase-splitter 4, separation scraper 2 is threeway, is made by kapillary, extraction circle 3 is the coil of kapillary coiled, phase-splitter 4 is in the connection of neck tubule, down two bubbles form, on steep the top and have flatly, following bubble is greatly, its bottom has flatly, neck tubule side is connected to branch's tubule, and displacement bottle 1-pipe is as import, and a pipe is connected with separation scraper 2-pipe, separation scraper 2 other two pipes, one pipe is as the sample interface, and the logical extraction of a pipe encloses 3, and the logical phase-splitter of another pipe of extraction circle 3 steeps for 4 times, last bubble leads to detecting device, and the neck side arm is made external tapping.

2, a kind of liquid-liquid extraction piece as claimed in claim 1, its feature also is: displacement bottle 1 can adopt the thick glass tube of thumb, upper and lower respectively opening flatly, end opening is an external tapping, the phase-splitter 4 that connects suitable for reading, displacement bottle 1, separation scraper 2, extraction circle 3, phase-splitter 4 all is inserted on the duroplasts base.

3, as a kind of liquid-liquid extraction piece of claim 1 or 2 narrations, it is characterized in that: separation scraper 2 is threeway, and three-way pipe is to planar evenly distributing, and adjacent two pipe clamp angles are 120 °.

4, a kind of liquid-liquid extraction piece as claimed in claim 1 or 2, it is characterized in that, capillary inner diameter, phase-splitter neck tubule and a bore are 0.5mm～1.5mm, the extraction circle number of turns is 15～30 circles, loop diameter 10mm～20mm, phase-splitter 4 usefulness glass are made, on steep volume 0.6ml～1.2ml, following bubble volume 5ml～10ml.