CS264162B1

CS264162B1 - Apparatus for separating the thin layer of the extender

Info

Publication number: CS264162B1
Application number: CS863836A
Authority: CS
Inventors: Jan Ing Csc Hrivnak
Original assignee: Jan Ing Csc Hrivnak
Priority date: 1986-05-26
Filing date: 1986-05-26
Publication date: 1989-06-13
Also published as: CS383686A1

Abstract

Riesenie sa týká špeciáTnych metod analytických a slúži na extrakciu stopových koncentrácii organických látok rozpuštěných vo vodě pre ich následná analýzu metodami chromatografickými. Zariadenie na separovanie tenkej vrstvy extrahovadla sa napojí na extrakčnú nádobku a je zložená z trubky so zábrusom gulovite rozšírenej vo fázový separátor, ktorý je vertikálně ukončený kalibrovanou rúrikou a ku ktorému je ďalej šikmo připojená bočná liekovite ukončená rúrka siahajúca do hrdla extrakčnej nádobky pod vrstvu extrahovadla. Extrahovaná alebo Inertná kvapalina po priliatí do extrakčnej nádobky cez šikmo připojená bočná rúrku vytlačí extrahovadlo do priestoru rúrky pre odběr extrahovadla na účely analytického stanovenia. Je možné ho použit pri analýzach pre ekologické účely.The solution concerns special analytical methods and serves for the extraction of trace concentrations of organic substances dissolved in water for their subsequent analysis by chromatographic methods. The device for separating a thin layer of the extractant is connected to the extraction vessel and is composed of a tube with a ground surface spherically expanded into a phase separator, which is vertically terminated by a calibrated tube and to which a lateral tube terminated in a cylindrical shape is further obliquely connected, reaching into the neck of the extraction vessel under the extractant layer. The extracted or inert liquid, after pouring into the extraction vessel through the obliquely connected side tube, pushes the extractant into the space of the tube for extractant collection for the purposes of analytical determination. It can be used in analyses for ecological purposes.

Description

(57) The solution concerns special analytical methods and serves to extract trace concentrations of organic substances dissolved in water for subsequent analysis by chromatographic methods. The extractor thin film separation apparatus is connected to an extraction vessel and is comprised of a tubular gullet-expanded tube phase separator which is vertically terminated by a calibrated tube and to which a lateral drug-terminated tube extends into the extraction vessel neck below the extractor layer. Extracted or inert liquid after being added to the extraction vessel through an obliquely attached side tube pushes the extractor into the space of the extraction tube for analytical determination. It can be used for environmental analysis. EN 264 162 Wh

5

X 264162 1 2

The invention relates to a device for separating a thin layer of an extractor.

When analyzing trace concentrations of substances dissolved in water, it is often necessary to extract these substances with a small amount of extender. When the extractant is easier than water and a separating funnel is used for extraction, a small amount of the extractant forms a thin film on the surface of the surface, which can only be separated from the extracted liquid. Another possible solution is a narrow-necked extraction vessel that works by extracting an extracted solution through the throat, after the liquid stratification, which extrudes the thin film of the extractor into the tapered portion of the throat, is sucked into the syringe or micropipette and further processed . The disadvantage is the filling and emptying of the container. Progress is a two-necked container where one neck is narrow and the other is wider - side-to-side of a molten container for supplying extracted liquid which, after stratification, expels the extractant into a narrow neck. The common drawback of both solutions is the moisture of the walls in the tapered portion of the neck and talk of the possibility of mechanical entrainment of the water droplets when extracting the extract and problems of handling such as pouring water through the neck or the need for two throats in the last process.

These drawbacks are largely eliminated by the thin film extractor separator of AO No. 215 680, which is attached to the neck of the extraction bank and consists in that it consists of a tube with a spherical guillotine expanded into a phase separator, vertically terminating with a thin tube for extraction of the extractant preferably calibrated and with an obliquely attached side tube a medicament terminated for the entry of an inert or extracted liquid in a glassed-in guide. Extracted or inert liquid, after being added to the extraction flask through an obliquely attached side tube, expels the extractor into the extraction tube tube for analytical evaluation, e.g., by gas chromatography. A drawback of this device is that when the extracted or inert liquid is poured through the obliquely attached side tube, the layer of the extender is mechanically broken and its re-creation is time-consuming.

Claims

OBJECTS A device for separating a thin layer of an extractor attached to an extraction vessel, consisting of a pipe with a ground-glass joint expanded into a phase separator vertically terminated by a calibrated pipe. It has now been found that the apparatus for separating a thin layer of an extractor according to the invention solves the deficiency described. The device is connected to an extraction vessel and consists of a tube with a ground glass guillotine in a phase separator vertically terminated by a calibrated tube. The phased tube is obliquely attached to the phase separator. The essence of the invention is that the drug-terminated tube extends into the neck of the extraction vessel under the extractor layer. An advantage of the device according to the invention is that when the extracted or inert liquid is poured through the obliquely attached side tube, the mechanical layer of the extractor is not mechanically damaged. Extracted or inert liquid does not come into contact with the extractant when poured. An advantage of using the device according to the invention is that one device can also be used for multiple banks of equal or different volume with a ground glass suitable for this device. There are no problems with continuous filling, resp. by emptying and purifying the extraction flask, such as at flasks with a tapered neck. The extractor extraction wall is not contaminated with the extracted liquid, so there is no risk of mechanical entrainment of extracted liquid - water into the extractor. If a thin extract tube is calibrated, only part of the extractant may be used for further processing or analysis. The extender in the tube is easily accessible, for example, by means of a syringe and can be directly dispensed into the gas chromatograph. The invention is explained in more detail in the accompanying drawing, which shows a cross-section of a glass device. The apparatus for separating the thin layer of the extractor consists of a ground glass 1, spherically expanded in a phase separator 2, which is vertically terminated by a pipe 3, and a lateral, medically terminated pipe 4 extending into the neck of the extraction vessel 5 underneath the extractor layer. The device can be used to extract trace concentrations of organic matter dissolved in water for subsequent analysis, which is particularly important from an ecological point of view. DISCLOSURE OF THE INVENTION further comprising an obliquely connected medicament-terminated tube, characterized in that the medicament-terminated tube (4) extends into the neck of the extraction container (5). 1 sheet of drawings 264162