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 time

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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Withdrawn
Application number
DE19782843443
Other languages
German (de)
Inventor
Hugo Dipl Ing Konias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19782843443 priority Critical patent/DE2843443A1/en
Publication of DE2843443A1 publication Critical patent/DE2843443A1/en
Withdrawn legal-status Critical Current

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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

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  • 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

The device for polarographic measurements on suspended mercury drops enables examination of electrode reaction products and special analysis. The device is produced with less demanding and expensive processes than required for types using a micrometer screw piston adjustment and does not suffer from leakage problems associated with them. The capillary tube on the end of which each drop is formed has a component contg. a tap or transferse blocking valve wiht an electrical or mechanical control. This interrupts the mercury flow when it is open the mercury flows at a rate dependent on the capillary dimensions. The size of the drop can be regulated by varying the valve opening time. A new drop is formed by tapping the device until the old one falls off and reopening the valve.

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)

Patentansprüche: Vorrichtung für polarographisches Messen an der hängenden Quecksilbertropfelektrode,dadurch gekennzeichnet,daß die Kapillare (Kugelkapillare,Spindelkapillare usw.) mit dem Bestandteil versehen ist,der die schnittweise Unterbrechung des Quecksilbertropfens bewirkt,insbesondere mit einem Halm oder mit einem Querabschperrventil,beide mit der elektrischen oder mechanischen Steuerung.Claims: Device for polarographic measurement on the hanging Mercury drop electrode, characterized in that the capillary (spherical capillary, spindle capillary etc.) is provided with the component that interrupts the mercury drop in sections causes, in particular with a stalk or with a cross shut-off valve, both with the electrical or mechanical control.
DE19782843443 1978-10-05 1978-10-05 Mercury drop formation device for polarographic measurement - enables drop size regulation by varying capillary valve opening time Withdrawn DE2843443A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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8139 Disposal/non-payment of the annual fee