DE2843443A1 - Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening time - Google Patents
Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening timeInfo
- Publication number
- DE2843443A1 DE2843443A1 DE19782843443 DE2843443A DE2843443A1 DE 2843443 A1 DE2843443 A1 DE 2843443A1 DE 19782843443 DE19782843443 DE 19782843443 DE 2843443 A DE2843443 A DE 2843443A DE 2843443 A1 DE2843443 A1 DE 2843443A1
- Authority
- DE
- Germany
- Prior art keywords
- drop
- mercury
- opening time
- valve opening
- capillary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/34—Dropping-mercury electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Titel: Vorrichtang für polarographisches MeTitle: Device for polarographic measurement
Quecksilbertropfelektrode. Mercury drop electrode.
Anwendun@sgebiet: Polarographisches Messen Zweck: Auf dem Gebiet der Polarographie wird oft ein stationärer, hängender Quecksilbertropfen zur Untersuchung der Produkte von Elektrodenreaktionen und für spezielle Zwecke benutzt.Diese Elektrode unterscheidet sich von der gewöhnlichen Tropfenelektrode dadurch,daß ih während der gesamten Elektrolysendauer konst nicht erneuert wird.Die übrigen Vorteile der Tropfeneleftrode bleiben dabei erhlten.Field of application: Polarographic measurement Purpose: In the field of Polarography often uses a stationary, hanging drop of mercury for examination of the products of electrode reactions and used for special purposes.This electrode differs from the usual drop electrode in that ih during the entire duration of the electrolysis is not renewed. The other advantages of Drop electrodes are retained.
Stand der Technik: Die bisher benutzte Vorrichtung zur Realisierung der stationären hänsenden Tropfenelektrode besteht aus einer Kapillare mit innerem Durchmesser von 0,1 bis 0,2 mm,die mit einem kleinen Quecksilberbehälter verbunden ist, in dem ein Kolben durch eine Mikrometerschraube luftdicht bewegt wird.Durch das Drehen der Mikrometerschraube lißt sich ein Quecksilbertropfen von verschidener Große aus der Kapillare herausdrücken.State of the art: The previously used device for implementation the stationary hanging drop electrode consists of a capillary with an inner 0.1-0.2mm diameter attached to a small mercury container in which a piston is moved airtight by a micrometer screw turning the micrometer screw releases a drop of mercury of various sizes Press the large one out of the capillary.
Kritik des Standes (ier Tecanik: Die Nachteile der o.b. Elektrode sind sehr anspruchsvolle und teuere Herstellung der Mikrometerschraube und große Schwierigkeiten mit der Dichtung,außerdem dringt die Lösung nach dem Abtropfen in die Kapillare ein,was die Meßwerte sehr negativ beeinflussen kann.Criticism of the stand (ier Tecanik: The disadvantages of the above-mentioned electrode are very demanding and expensive manufacture of the micrometer screw and large Difficulty with the seal, in addition, the solution penetrates after draining the capillary, which can have a very negative effect on the measured values.
Beschreibung der erfundenen Vo@pie@tung: Die Vorrichtung bestcht aus einer Kapillare (siehe "B" Abb.) versehen mit dem Bestandteil,der die schnittweise Unterbrechung des Quecksilberzuflußes,der aus einem kleinen Quecksilbergefäß kommt,bewirkt, insbesondere aus dem Hahn oder Querabsperrventil,beide mit der elektrischen oder mechanischen Steuerung.Durch die Eröffnung des Bestandteiles - A - (siehe Abb.) bildet sich der Quecksilbertropfen mit der Geschwindigkeit,die der betroffenen Kapillare entspricht.Description of the invented Vo @ pie @ tung: The device is impressive a capillary (see "B" Fig.) provided with the component that cuts the Interruption of the flow of mercury, which comes from a small mercury container, causes in particular from the tap or cross shut-off valve, both with the electric or mechanical control. By opening the component - A - (see fig.) the mercury drop forms at the same speed as the affected capillary is equivalent to.
Die Größe des Quecksilbertropfens läßt sich einfach durch das Zeitmessen wählen.Braucht man einen neuen Tropfen reißt man durch gelindes Klopfen an die Kapillare den Tropfen ab, und durch die Wiedereröffnung des Bestandteiles " A " kann ein neuer Tropfen gebildet werden.Diese Vorrichtung ist viel einfacher und unvergleichbar billiger.Die Tropfengrößen sind ausgezeichnet reproduzierbar.The size of the mercury drop can be easily measured by timing If you need a new drop, tap the capillary gently the drop off, and by reopening the component "A" a new one can be added Droplets are formed. This device is much simpler and incomparable The droplet sizes are extremely reproducible.
L e e r s e i t eL e r s e i t e
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782843443 DE2843443A1 (en) | 1978-10-05 | 1978-10-05 | Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782843443 DE2843443A1 (en) | 1978-10-05 | 1978-10-05 | Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening time |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2843443A1 true DE2843443A1 (en) | 1980-04-24 |
Family
ID=6051468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782843443 Withdrawn DE2843443A1 (en) | 1978-10-05 | 1978-10-05 | Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening time |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2843443A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410289A1 (en) * | 1989-07-24 | 1991-01-30 | Cosmo Instruments Co., Ltd. | Micro-leakage regulating valve |
DE3937577A1 (en) * | 1989-11-11 | 1991-05-16 | Lutz Ehrlich | Voltametric analysis cell - with holder cavity holding oversize mercury droplet |
-
1978
- 1978-10-05 DE DE19782843443 patent/DE2843443A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410289A1 (en) * | 1989-07-24 | 1991-01-30 | Cosmo Instruments Co., Ltd. | Micro-leakage regulating valve |
DE3937577A1 (en) * | 1989-11-11 | 1991-05-16 | Lutz Ehrlich | Voltametric analysis cell - with holder cavity holding oversize mercury droplet |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |