DE4032974A1 - Specimen material concentrating appts. - has hollow cylindrical collecting electrode, spray electrode and suction system raising sensitivity of analyser - Google Patents

Specimen material concentrating appts. - has hollow cylindrical collecting electrode, spray electrode and suction system raising sensitivity of analyser

Info

Publication number
DE4032974A1
DE4032974A1 DE19904032974 DE4032974A DE4032974A1 DE 4032974 A1 DE4032974 A1 DE 4032974A1 DE 19904032974 DE19904032974 DE 19904032974 DE 4032974 A DE4032974 A DE 4032974A DE 4032974 A1 DE4032974 A1 DE 4032974A1
Authority
DE
Germany
Prior art keywords
electrode
specimen material
sample material
hollow cylindrical
analyser
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Withdrawn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
DE19904032974
Other languages
German (de)
Inventor
Georg Dipl Ing Geus
Bodo Schneider
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.)
Heimann Systems GmbH and Co KG
Original Assignee
Heimann GmbH
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 Heimann GmbH filed Critical Heimann GmbH
Publication of DE4032974A1 publication Critical patent/DE4032974A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/455—Collecting-electrodes specially adapted for heat exchange with the gas stream

Abstract

An arrangement for concentrating specimen material for analysis contains an electrofilter whose collecting electrode (6) acts as an evaporation electrode for the specimen material. The electrode can be heated and a suction aperture (7) for the specimen material is arranged near it. The suction aperture is mounted laterally on a housing (1) with axially aligned feed and removal openings (2,3). A rod-shaped spray electrode (4) is mounted upstream of the hollow cylindrical collecting electrode. USE/ADVANTAGE - Enables sensitivity of associated analyser to be raised by concentrating sample material by simple mechanism.

Description

Die Erfindung betrifft eine Vorrichtung zur Konzentrierung von Probematerial in der Analysetechnik.The invention relates to a device for concentrating Sample material in analysis technology.

In der Analysetechnik wird angestrebt, die Empfindlichkeit einer Meßanordnung für Probematerial durch Sammlung und/oder Konzentrierung des Probematerials zu erhöhen. Zu diesem Zweck sind unterschiedliche Mittel bekannt, wie z. B.The aim in analysis technology is sensitivity a measuring arrangement for sample material by collection and / or Increase the concentration of the sample material. To this end different means are known, such. B.

  • - Kühl- oder Kältefallen- Cold or cold traps
  • - Sammlung und Konzentration unter Verwendung von Aktivkohlefiltern- Collection and concentration using Activated carbon filters
  • - Verwendung von Stäbchen zur Anreicherung.- Use of chopsticks for enrichment.

Je nach der Art des Probematerials und den Anforderungen an die Meßanordnung kommen die geschilderten Mittel zur Anwendung.Depending on the type of sample material and the requirements for the The arrangement described uses the measuring arrangement.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die bei einfachem Aufbau eine Konzentrierung von Probematerial ermöglicht, so daß eine wesentliche Steigerung der Empfindlichkeit einer mit der Vor­ richtung ausgerüsteten Meßanordnung für das Probematerial er­ folgt.The invention has for its object a device to create the type mentioned above, with a simple structure allows a concentration of sample material, so that a significant increase in sensitivity one with the previous equipped measuring arrangement for the sample material follows.

Diese Aufgabe ist erfindungsgemäß gelöst durch ein Elektrofil­ ter, dessen Niederschlagselektrode als Abdampfelektrode für das Probematerial ausgebildet ist. Bei der erfindungsgemäßen Vor­ richtung wird das Probematerial von der Niederschlagselektrode in erhöhter Konzentration abgedampft und kann durch eine ge­ eignete Absaugöffnung einem Analysegerät zugeführt werden. Be­ sonders zweckmäßig ist es, die Niederschlagselektrode heizbar auszuführen, so daß ein einfaches Abdampfen des Probematerials erreicht ist.According to the invention, this object is achieved by an electrofil ter, whose precipitation electrode serves as an evaporation electrode for the Sample material is formed. In the case of the invention the sample material is directed from the precipitation electrode evaporated in increased concentration and can by a ge suitable suction opening can be fed to an analyzer. Be It is particularly expedient to heat the precipitation electrode  perform so that a simple evaporation of the sample material is reached.

Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is based on one in the drawing illustrated embodiment explained in more detail.

In der Zeichnung ist ein Elektrofilter mit einem zylindrischen Gehäuse 1 dargestellt, das eine Zuführöffnung 2 und eine Ab­ führöffnung 3 aufweist. Im Gehäuse 1 ist eine Absprühelektrode 4 angeordnet, die stiftförmig ausgebildet ist und der eine hohlzylinderförmige Niederschlagselektrode 5 zugeordnet ist. Die Niederschlagselektrode 5 ist über eine an die Klemmen 6 an­ schließbare Stromquelle elektrisch heizbar.In the drawing, an electrostatic filter with a cylindrical housing 1 is shown, which has a feed opening 2 and a guide opening 3 . A spraying electrode 4 is arranged in the housing 1, which is designed in the form of a pin and to which a hollow cylindrical precipitation electrode 5 is assigned. The precipitation electrode 5 can be electrically heated via a current source which can be connected to the terminals 6 .

Außer den axial in Strömungsrichtung hintereinander liegenden Öffnungen 2, 3 ist am Gehäuse 1 im Bereich der Niederschlags­ elektrode 5 eine Absaugöffnung 7 vorgesehen, über die das Pro­ bematerial aus dem Elektrofilter abgesaugt und einem Analyse­ gerät zugeführt wird.In addition to the axially one behind the other in the flow direction openings 2 , 3 is provided on the housing 1 in the region of the precipitation electrode 5, a suction opening 7 , through which the pro material is sucked out of the electrostatic filter and supplied to an analysis device.

Das zu analysierende Probematerial wird dem Elektrofilter über die Zuführöffnung 2 zyklisch oder kontinuierlich zugeführt. Mittels der Sprühelektrode 4 wird das Probematerial elektrisch aufgeladen und schlägt sich dann an der Niederschlagselektrode 5 nieder. Hierzu sind die Elektroden 4, 5 an eine Hochspan­ nungs-Gleichspannungsquelle anschaltbar.The sample material to be analyzed is fed to the electrostatic filter cyclically or continuously via the feed opening 2 . The sample material is electrically charged by means of the spray electrode 4 and is then deposited on the precipitation electrode 5 . For this purpose, the electrodes 4 , 5 can be connected to a high-voltage direct voltage source.

Nach Beendigung des Zuführzyklus steht das Probematerial, das über die Zuführöffnung 2 beispielsweise in einem Luftstrom staubförmig zugeführt wird, gesammelt an der Niederschlags­ elektrode 5 zur Verfügung. Die Niederschlagselektrode 5 wird auf eine hohe Temperatur aufgeheizt. Dadurch wird das dort vorhandene Probematerial verdampft und kann mit Hilfe der Ab­ saugöffnung 7 einem Analysegerät in konzentrierter Form zuge­ führt werden. After completion of the feed cycle, the sample material, which is supplied in dust form via the feed opening 2, for example in an air stream, is collected at the precipitation electrode 5 . The precipitation electrode 5 is heated to a high temperature. As a result, the sample material present there is evaporated and can be supplied to an analyzer in concentrated form using the suction opening 7 .

Während der Aufheizzeit und der nachfolgenden Probeentnahmezeit ist die Probezuführung gesperrt und die Probeentnahme durch die dafür vorgesehene Absaugöffnung 7 möglich.During the heating-up time and the subsequent sampling time, the sample supply is blocked and sampling is possible through the suction opening 7 provided for this purpose.

Die beschriebene Vorrichtung vereinigt folgende Vorteile:The described device combines the following advantages:

  • - Es wird verhindert, daß Partikel in das der Vorrichtung nachgeschaltete Analysegerät eindringen können- It prevents particles from entering the device downstream analyzer can penetrate
  • - Die Partikel im Probevolumen werden gesammelt- The particles in the sample volume are collected
  • - Durch Verdampfen der Partikel wird eine wesentliche Er­ höhung der Probegaskonzentration und damit eine Steigerung der Empfindlichkeit der Meßanordnung erreicht.- Evaporation of the particles becomes an essential element increase in the sample gas concentration and thus an increase reached the sensitivity of the measuring arrangement.

Claims (6)

1. Vorrichtung zur Konzentrierung von Probematerial in der Analysetechnik mit einem Elektrofilter, dessen Niederschlags­ elektrode (5) als Abdampfelektrode für das Probematerial aus­ gebildet ist.1. Device for concentrating sample material in analysis technology with an electrostatic filter, the precipitation electrode ( 5 ) of which is formed as an evaporation electrode for the sample material. 2. Vorrichtung nach Anspruch 1, dadurch gekenn­ zeichnet, daß die Niederschlagselektrode (5) heizbar ist.2. Device according to claim 1, characterized in that the precipitation electrode ( 5 ) is heatable. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch ge­ kennzeichnet, daß im Bereich der Niederschlags­ elektrode (5) eine Absaugöffnung (7) für das Probematerial vorhanden ist.3. Apparatus according to claim 1 or 2, characterized in that in the region of the precipitation electrode ( 5 ) has a suction opening ( 7 ) for the sample material. 4. Vorrichtung nach Anspruch 3, dadurch gekenn­ zeichnet, daß ein Gehäuse (1) mit einer Zuführ- und einer Abführöffnung (2, 3) vorhanden ist, welche axial hinter­ einander liegen, und daß die Absaugöffnung (7) seitlich am Ge­ häuse (1) angeordnet ist.4. The device according to claim 3, characterized in that a housing ( 1 ) with a feed and a discharge opening ( 2 , 3 ) is present, which lie axially one behind the other, and that the suction opening ( 7 ) laterally on the Ge housing ( 1 ) is arranged. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, da­ durch gekennzeichnet, daß in Strömungs­ richtung vor der als Hohlzylinder ausgebildeten Niederschlags­ elektrode (5) eine stiftförmige Absprühelektrode (4) angeordnet ist.5. Device according to one of claims 1 to 4, characterized in that a pin-shaped spray electrode ( 4 ) is arranged in the flow direction in front of the precipitation electrode designed as a hollow cylinder ( 5 ). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, da­ durch gekennzeichnet, daß die zu ana­ lysierende Probe dem Elektrofilter kontinuierlich oder zyklisch zugeführt wird.6. Device according to one of claims 1 to 5, there characterized in that the to ana lysing sample to the electrostatic filter continuously or cyclically is fed.
DE19904032974 1989-10-30 1990-10-17 Specimen material concentrating appts. - has hollow cylindrical collecting electrode, spray electrode and suction system raising sensitivity of analyser Withdrawn DE4032974A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89120139 1989-10-30

Publications (1)

Publication Number Publication Date
DE4032974A1 true DE4032974A1 (en) 1991-05-02

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DE19904032974 Withdrawn DE4032974A1 (en) 1989-10-30 1990-10-17 Specimen material concentrating appts. - has hollow cylindrical collecting electrode, spray electrode and suction system raising sensitivity of analyser

Country Status (1)

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DE (1) DE4032974A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033815B3 (en) * 2004-07-12 2006-01-19 Fisia Babcock Environment Gmbh Impact electrode for electric filter removing liquid and solid particles from gas consists of two thin plates tack welded together at intervals to make chamber filled with heating or cooling fluid
WO2008057362A2 (en) * 2006-11-01 2008-05-15 Kronos Advanced Technologies, Inc. Space heater with electrostatically assisted heat transfer and method of assisting heat transfer in heating devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033815B3 (en) * 2004-07-12 2006-01-19 Fisia Babcock Environment Gmbh Impact electrode for electric filter removing liquid and solid particles from gas consists of two thin plates tack welded together at intervals to make chamber filled with heating or cooling fluid
WO2008057362A2 (en) * 2006-11-01 2008-05-15 Kronos Advanced Technologies, Inc. Space heater with electrostatically assisted heat transfer and method of assisting heat transfer in heating devices
WO2008057362A3 (en) * 2006-11-01 2008-07-10 Kronos Advanced Tech Inc Space heater with electrostatically assisted heat transfer and method of assisting heat transfer in heating devices
US20100051709A1 (en) * 2006-11-01 2010-03-04 Krichtafovitch Igor A Space heater with electrostatically assisted heat transfer and method of assisting heat transfer in heating devices

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Legal Events

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8127 New person/name/address of the applicant

Owner name: HEIMANN SYSTEMS GMBH & CO KG, 6200 WIESBADEN, DE

8139 Disposal/non-payment of the annual fee