DE19744940A1 - Laboratory equipment for photochemical reaction, prior to analysis - Google Patents
Laboratory equipment for photochemical reaction, prior to analysisInfo
- Publication number
- DE19744940A1 DE19744940A1 DE19744940A DE19744940A DE19744940A1 DE 19744940 A1 DE19744940 A1 DE 19744940A1 DE 19744940 A DE19744940 A DE 19744940A DE 19744940 A DE19744940 A DE 19744940A DE 19744940 A1 DE19744940 A1 DE 19744940A1
- Authority
- DE
- Germany
- Prior art keywords
- double
- walled
- vessel
- unit
- guide sleeve
- 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- Withdrawn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
- 238000006552 photochemical reaction Methods 0.000 title claims description 4
- 238000004458 analytical method Methods 0.000 title abstract description 4
- 230000005284 excitation Effects 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000029087 digestion Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000005385 peroxodisulfate group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000002133 sample digestion Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
- B01J19/124—Ultraviolet light generated by microwave irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/126—Microwaves
-
- 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
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/12—Processes employing electromagnetic waves
- B01J2219/1203—Incoherent waves
- B01J2219/1206—Microwaves
- B01J2219/1209—Features relating to the reactor or vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/12—Processes employing electromagnetic waves
- B01J2219/1203—Incoherent waves
- B01J2219/1206—Microwaves
- B01J2219/1209—Features relating to the reactor or vessel
- B01J2219/1212—Arrangements of the reactor or the reactors
- B01J2219/1215—Single reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/12—Processes employing electromagnetic waves
- B01J2219/1203—Incoherent waves
- B01J2219/1206—Microwaves
- B01J2219/1209—Features relating to the reactor or vessel
- B01J2219/1221—Features relating to the reactor or vessel the reactor per se
- B01J2219/1224—Form of the reactor
- B01J2219/1227—Reactors comprising tubes with open ends
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Durchführung fotochemischer Reaktionen, vorzugsweise von Aufschlüssen im Labor, mit einer UV-Strah lereinheit, einer Erregereinheit für elektrodenlose Strahleranregung und Bauelementen zur Einkopplung von HF-Energie in die UV-Strahlereinheit.The invention relates to a device for performing photochemical Reactions, preferably digestions in the laboratory, with a UV beam ler unit, an excitation unit for electrodeless emitter excitation and Components for coupling RF energy into the UV lamp unit.
Solche Aufschlüsse werden vor allem bei der Probenvorbereitung in der chemischen Analytik benötigt, z. B. bei der Bestimmung von Schwermetal len mittels der Atomabsorptionsspektroskopie.Such outcrops are mainly used in sample preparation in the chemical analysis is required, e.g. B. in the determination of heavy metal len using atomic absorption spectroscopy.
Zum Aufschluß flüssiger Proben für die Spurenanalytik sind verschiedene Verfahren bekannt. Zunehmende Bedeutung gewinnt dabei die Bestrahlung des Probenmaterials mit UV-Licht. Hierfür ist neben der Leistungsfähigkeit dieses Verfahren auch besonders deren Umweltfreundlichkeit maßgebend, da auf die Verwendung von konzentrierten Säuren und Oxidantien verzich tet werden kann. There are various methods for the digestion of liquid samples for trace analysis Process known. Irradiation is becoming increasingly important of the sample material with UV light. This is in addition to performance this process is particularly important for their environmental friendliness, because the use of concentrated acids and oxidants is avoided can be tet.
Für die Durchführung von Aufschlüssen bei der Probenvorbereitung in der chemischen Analytik sind im Stand der Technik Vorrichtungen bekannt, bei denen mehrere Quarzglasgefäße, welche die aufzuschließenden Proben aufnehmen können, um einen stabförmigen UV-Strahler angeordnet sind.For performing digestions during sample preparation in the chemical analysis are known in the prior art devices where several quartz glass vessels containing the samples to be digested can accommodate a rod-shaped UV lamp are arranged.
Bei dieser Anordnung ist nachteilig, daß die UV-Strahlung nur in geschwächter Form genutzt werden kann, da sie einen verhältnismäßig langen Weg zurücklegen muß, um bis zur Probe zu gelangen. Ferner gehen von dem Spektrum der ausgesendeten UV-Strahlung die kurzwelligen Anteile verloren, da diese durch die den Strahler umgebende Luft vollstän dig absorbiert werden. Sie können deshalb für die Spaltung der organischen Verbindungen nicht genutzt werden. Dies hat zur Folge, daß für den vollständigen Probenaufschluß eine verhältnismäßig lange Zeit benötigt wird.This arrangement has the disadvantage that the UV radiation only in weakened form can be used as it is proportional must travel a long way to get to the rehearsal. Go further of the spectrum of the emitted UV radiation the short-wave Shares lost, as these are completely through the air surrounding the radiator dig be absorbed. You can therefore go for the cleavage of organic Connections are not used. This has the consequence that for the complete sample digestion takes a relatively long time becomes.
Außerdem ist nachteilig, daß die Lebensdauer der Strahler und die Wellen längeverteilung der abgegebenen UV-Strahlung der zum Einsatz kommen den Quecksilberhochdruckstrahler sehr begrenzt ist.It is also disadvantageous that the life of the radiators and the waves length distribution of the emitted UV radiation that are used the high pressure mercury lamp is very limited.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Durchfüh rung fotochemischer Reaktionen mit UV-Bestrahlung anzugeben, die eine Bestrahlung mit hoher Bestrahlungsstärke und hoher Bestrahlungshomoge nität ermöglicht und die sich durch eine gute Handhabbarkeit auszeichnet.The invention has for its object a device for performing tion of photochemical reactions with UV radiation to indicate a Irradiation with high irradiance and high irradiation homogeneity enables and which is characterized by good manageability.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die UV-Strah lereinheit in Form eines Doppelwandgefäßes aus Quarzglas ausgebildet ist, wobei der Raum im Inneren der Strahlereinheit zur Probenaufname dient und der sich daran nach außen anschließende ringförmige Raum zwischen den beiden Quarzglasschichten evakuiert und mit einer Metalldampf-Edel gasfüllung versehen ist.According to the invention the object is achieved in that the UV beam ler unit is designed in the form of a double wall vessel made of quartz glass, the space inside the radiator unit being used for sample collection and the annular space adjoining it to the outside between evacuated the two quartz glass layers and with a metal vapor noble is filled with gas.
Vorteilhafte Ausgestaltung der erfindungsgemäßen Vorrichtung sind in den Unteransprüchen angegeben.Advantageous embodiments of the device according to the invention are shown in FIGS Subclaims specified.
Die Vorrichtung beinhaltet eine Erregereinheit mit allen erforderlichen Bauelementen für eine elektrodenlose Strahleranregung, wie Oszillator, Verstärker, Stromversorgung und induktiven und/oder kapazitiven Bauele menten zur Einkopplung der HF-Energie in den Strahler und eine Strah lereinheit in Form eines Doppelwandgefäßes aus Quarzglas zur Probenaufnahme.The device includes an excitation unit with all the necessary Components for an electrodeless emitter excitation, such as an oscillator, Amplifier, power supply and inductive and / or capacitive components elements for coupling the RF energy into the radiator and a beam ler unit in the form of a double wall vessel made of quartz glass Sample recording.
Damit wird ein kompaktes Gerät geschaffen, das sich leicht handhaben läßt. Durch die unmittelbare Anordnung des zu bestrahlenden Materials innerhalb des Strahlers werden Verluste der abgestrahlten Energie fast vollständig vermieden.This creates a compact device that is easy to handle leaves. Due to the direct arrangement of the material to be irradiated within the radiator there are almost losses of radiated energy completely avoided.
Die erfindungsgemäße Anordnung wird damit höchsten Anforderungen an die Bestrahlungsstärke und die -homogenität gerecht.The arrangement according to the invention will therefore meet the highest requirements the irradiance and homogeneity.
Ein entscheidender Vorteil der erfindungsgemäßen Anordnung besteht darin, daß die Vorrichtung aus den beiden Baugruppen Erregereinheit und Strahlungseinheit besteht, die leicht voneinander zu trennen sind. Die Strahlungseinheit dient gleichzeitig als Aufnahmegefäß für die zu bestrah lende Probe. Eine im Gehäuse angeordnete Führungshülse dient zur Aufnahme der Strahlereinheit in der Gesamtanordnung und verhindert das Eindringen der Probensubstanz in die Erregereinheit bei einem eventuell auftretenden Bruch der Strahlereinheit.A decisive advantage of the arrangement according to the invention is in that the device from the two modules excitation unit and Radiation unit exists that are easy to separate from each other. The Radiation unit also serves as a receptacle for those to be irradiated sample. A guide sleeve arranged in the housing serves for Inclusion of the radiator unit in the overall arrangement and prevents this Penetration of the sample substance into the excitation unit in the event of one occurring breakage of the radiator unit.
Das Doppelwandgefäß kann unten geschlossenen und dabei in Form eines doppelwandigen Rohres oder einer doppelwandigen Kugel ausgebildet sein. Es ist auch möglich, daß das Doppelwandgefäß in einem Gehäuse angeord net ist, das mit einer nach oben offenen Führungshülse versehen ist, in die die UV-Strahlereinheit eingeschoben werden kann, wobei sich die Führungshülse in einer HF-Spule befindet, oder daß an den Außenflächen der Führungshülse Kondensatorelektroden angeordnet sind.The double wall vessel can be closed at the bottom and in the form of a be double-walled tube or a double-walled ball. It is also possible for the double-walled vessel to be arranged in a housing is net, which is provided with an upwardly open guide sleeve into which the UV lamp unit can be inserted, the Guide sleeve located in an RF coil, or that on the outer surfaces the guide sleeve capacitor electrodes are arranged.
Eine vorteilhafte Ausführung sieht vor, daß ein oder mehrere Doppelwand gefäße in einem Mikrowellengerät angeordnet sind.An advantageous embodiment provides that one or more double walls vessels are arranged in a microwave oven.
Dabei kann das Doppelwandgefäß unten geschlossen oder als durchgängi ges Rohr ausgebildet sein. Im letzteren Fall weist es im Bereich der Doppelwandigkeit einen vergrößerten Durchmesser auf.The double wall vessel can be closed at the bottom or as a continuous one Ges tube be formed. In the latter case it points in the area of Double wall has an enlarged diameter.
Damit ergibt sich eine besonders einfache und gleichzeitig sehr leistungsfä hige Anregung für die UV-Strahlung. Die auf diese Weise angeregte UV-Strahlung führt zu einer wesentlichen Verkürzung der erforderlichen Aufschlußzeiten. Gegenüber den bekannten Anordnungen kann eine Verkürzung der Aufschlußzeit um bis zu 90% erreicht werden. Dadurch können auch Stoffe, die bisher mit den rein thermischen Methoden nicht oder nur sehr schwer aufschließbar waren, in einfacher Weise aufgeschlos sen werden. This results in a particularly simple and at the same time very powerful strong suggestion for UV radiation. The one so excited UV radiation leads to a substantial shortening of the time required Digestion times. Compared to the known arrangements, a Shortening the digestion time by up to 90% can be achieved. Thereby can also use substances that were previously not possible with purely thermal methods or were very difficult to unlock, easily unlocked will be.
Vorteilhaft ist hierbei außerdem, daß durch die Verwendung verschiedener Gasfüllungen im Entladungsraum sehr unterschiedliche Strahlungsspektren realisiert werden können. Bei hohen spektralen Anteilen an kurzwelliger Strahlung um 200 nm oder darunter kann auf die Verwendung eines Oxida tionsmittels, wie Wasserstoffperoxid oder Peroxodisulfat, teilweise oder vollständig verzichtet werden, weil die erforderlichen Oxidationsradikale aus dem Wasser in ausreichender Menge gebildet werden.It is also advantageous that by using different Gas fillings in the discharge space have very different radiation spectra can be realized. With high spectral components in short-wave Radiation around 200 nm or below can be due to the use of an oxide tion agent, such as hydrogen peroxide or peroxodisulfate, partially or be completely dispensed with because of the required oxidation radicals sufficient quantities are formed from the water.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispieles näher erläutert. In der zugehörigen Zeichnung zeigen:The invention is described below using an exemplary embodiment explained in more detail. In the accompanying drawing:
Fig. 1 einen Schnitt durch eine unten geschlossene Strahlereinheit in Form eines doppelwandigen Rohres, Fig. 1 shows a section through a closed bottom radiator unit in the form of a double-walled pipe,
Fig. 2 einen Schnitt durch eine unten geschlossene Strahlereinheit in Form einer doppelwandigen Kugel, Fig. 2 shows a section through a closed bottom radiator unit in the form of a double ball,
Fig. 3 einen Schnitt durch eine Strahlereinheit in Form eines durchge henden doppelwandigen Rohres, Fig. 3 a section through a radiator unit in the form of a Runaway Henden double-walled pipe,
Fig. 4 einen Schnitt durch die Erregereinheit, Fig. 4 is a section through the exciter unit,
Fig. 5 einen Schnitt durch eine Aufschlußeinheit im zusammen gesetzten Zustand, Fig. 5 shows a section through a lysis unit in the assembled state,
Fig. 6 einen Schnitt senkrecht zu der Fig. 5 dargestellten Schnittflä che und Fig. 6 shows a section perpendicular to the surface shown in FIG. 5 and
Fig. 7 einen Schnitt durch eine Anordnung mit Mikrowellenanregung. Fig. 7 shows a section through an arrangement with microwave excitation.
Fig. 1 zeigt die Strahlereinheit im Schnitt. In diese kann die zu bestrah lende Probe in das innere Rohr 1 eingefüllt werden. Das innere Rohr 1 besteht aus einem hoch-UV-durchlässigen Quarz, beispielsweise aus Supra sil oder Ilmasil PS. Um das innere Rohr 1 ist ein weiteres Quarzglasrohr als äußeres Rohr 2 mit größerem Durchmesser angeordnet. Der zwischen dem inneren Rohr 1 und dem äußeren Rohr 2 bestehende ringförmige Raum ist gasdicht verschmolzen und mit einer Edelgas-Quecksilber-Füllung verse hen. Fig. 1 shows the radiator unit in section. In this, the sample to be irradiated can be filled into the inner tube 1 . The inner tube 1 consists of a highly UV-permeable quartz, for example made of Supra sil or Ilmasil PS. A further quartz glass tube is arranged around the inner tube 1 as an outer tube 2 with a larger diameter. The existing between the inner tube 1 and the outer tube 2 annular space is melted gastight and hen with a noble gas mercury filling verses.
Fig. 2 erläutert eine Ausführungsform, bei der die Strahlereinheit in Form einer doppelwandigen Kugel ausgebildet ist. Diese Ausführung ist zur Aufnahme größerer Probenmengen geeignet. Fig. 2 explains an embodiment in which the radiator unit is designed in the form of a double-walled ball. This version is suitable for holding larger amounts of samples.
In Fig. 3 ist eine Gestaltungsform dargestellt, bei der die Strahlereinheit in Form eines doppelwandigen durchgehenden Rohres ausgeführt ist. Diese Strahlereinheit ermöglicht das Bestrahlen durchströmender Flüssigkeiten.In Fig. 3, a design is shown in which the radiator unit is designed in the form of a double-walled continuous tube. This emitter unit enables the irradiation of liquids flowing through.
Fig. 4 zeigt einen Schnitt durch die Erregereinheit. In einem Gehäuse 3 sind alle für die elektrodenlose Anregung der Strahlereinheit erforderlichen Bauelemente enthalten. Eine im unteren Bereich geschlossene Führungshülse 4 dient zur Aufnahme der Strahlereinheit und verhindert gleichzeitig bei einem eventuell auftretenden Bruch der Strahlereinheit das Eindringen von Probensubstanz in die Erregereinheit. Ein hier nicht darge stellter HF-Generator erzeugt die zur Anregung der Strahlereinheit benötigte HF-Energie. Im dargestellten Ausführungsbeispiel wird diese über eine um die Führungshülse 4 gewickelte HF-Spule 5 in die Strah lereinheit eingekoppelt. Die Einkopplung kann jedoch auch kapazitiv erfol gen. Hierzu können an der Außenfläche der Führungshülse 4 Kondensatorelektroden angebracht werden. Fig. 4 shows a section through the excitation unit. All the components required for the electrodeless excitation of the radiator unit are contained in a housing 3 . A closed guide sleeve 4 in the lower area serves to receive the radiator unit and at the same time prevents the penetration of sample substance into the exciter unit if the radiator unit breaks. An RF generator, not shown here, generates the RF energy required to excite the radiator unit. In the illustrated embodiment, this is coupled via an RF coil 5 wound around the guide sleeve 4 into the radiation unit. However, the coupling can also be capacitive. For this purpose, 4 capacitor electrodes can be attached to the outer surface of the guide sleeve.
Die Fig. 5 und 6 zeigen in zwei zueinander senkrecht angeordneten Schnitten die Gesamtanordnung der Vorrichtung im zusammengesetzten Zustand. An dem Gehäuse 3 befindet sich das Bedienfeld 6, in dem alle für die Bedienung der Vorrichtung erforderlichen Bauelemente, wie Ein/Aus-Schalter, Timer und dergleichen, zusammengefaßt sind. Die Strah lereinheit wird in der Führungshülse 4 in ihrer Lage fixiert und kann in einfacher Weise entnommen und eingefügt werden. FIGS. 5 and 6 show, in two mutually perpendicular sections, the overall arrangement of the apparatus in the assembled state. On the housing 3 there is the control panel 6 , in which all the components required for operating the device, such as on / off switches, timers and the like, are combined. The radiator unit is fixed in position in the guide sleeve 4 and can be removed and inserted in a simple manner.
In Fig. 7 ist eine Ausführung dargestellt, bei der die Anregung der UV-Strahlung in einem handelsüblichen Mikrowellengerät 7 erfolgt. Auf die Strahlereinheit mit dem inneren Rohr I und dem äußeren Rohr 2 treffen die von dem Mikrowellengenerator 8 erzeugten Mikrowellen auf und regen zwischen dem inneren Rohr 1 und dem äußeren Rohr 2 eine intensive UV-Strahlung an. FIG. 7 shows an embodiment in which the UV radiation is excited in a commercially available microwave device 7 . The microwaves generated by the microwave generator 8 impinge on the radiator unit with the inner tube I and the outer tube 2 and stimulate intensive UV radiation between the inner tube 1 and the outer tube 2 .
11
inneres Rohr
inner tube
22nd
äußeres Rohr
outer tube
33rd
Gehäuse
casing
44th
Führungshülse
Guide sleeve
55
HF-Spule
RF coil
66
Bedienfeld
Control panel
77
Mikrowellengerät
Microwave oven
88th
Mikrowellengenerator
Microwave generator
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE19744940A DE19744940A1 (en) | 1997-02-28 | 1997-10-10 | Laboratory equipment for photochemical reaction, prior to analysis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19708150 | 1997-02-28 | ||
DE19744940A DE19744940A1 (en) | 1997-02-28 | 1997-10-10 | Laboratory equipment for photochemical reaction, prior to analysis |
Publications (1)
Publication Number | Publication Date |
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DE19744940A1 true DE19744940A1 (en) | 1998-09-03 |
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DE19744940A Withdrawn DE19744940A1 (en) | 1997-02-28 | 1997-10-10 | Laboratory equipment for photochemical reaction, prior to analysis |
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DE (1) | DE19744940A1 (en) |
WO (1) | WO1998037962A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1041602A2 (en) * | 1999-03-30 | 2000-10-04 | Ushiodenki Kabushiki Kaisha | Cooling system for a dielectric-barrier discharge lamp |
WO2004054706A1 (en) * | 2002-12-18 | 2004-07-01 | Personal Chemistry I Uppsala Ab | Vessel for performing microwave-assisted chemistry on small volumes of reagents |
DE19908387B4 (en) * | 1998-03-02 | 2005-03-24 | Behr Labortechnik Gmbh | Oven for drying and / or digestion of a sample to be analyzed |
CN104474886A (en) * | 2013-03-20 | 2015-04-01 | 江苏理工学院 | Method for photocatalytically degrading exhaust gas by electrodeless excimer lamp |
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DE19748520A1 (en) * | 1997-11-03 | 1999-05-06 | Mikrowellen Systeme Mws Gmbh | Device for triggering and / or promoting chemical processes by irradiating a starting material with electromagnetic waves |
GB2336240A (en) | 1998-04-09 | 1999-10-13 | Jenton International Limited | Apparatus for emitting light |
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Cited By (7)
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---|---|---|---|---|
DE19908387B4 (en) * | 1998-03-02 | 2005-03-24 | Behr Labortechnik Gmbh | Oven for drying and / or digestion of a sample to be analyzed |
EP1041602A2 (en) * | 1999-03-30 | 2000-10-04 | Ushiodenki Kabushiki Kaisha | Cooling system for a dielectric-barrier discharge lamp |
EP1041602A3 (en) * | 1999-03-30 | 2003-05-28 | Ushiodenki Kabushiki Kaisha | Cooling system for a dielectric-barrier discharge lamp |
WO2004054706A1 (en) * | 2002-12-18 | 2004-07-01 | Personal Chemistry I Uppsala Ab | Vessel for performing microwave-assisted chemistry on small volumes of reagents |
US8609044B2 (en) | 2002-12-18 | 2013-12-17 | Biotage Ab | Vessel for performing microwave-assisted chemistry on small volumes of reagents |
CN104474886A (en) * | 2013-03-20 | 2015-04-01 | 江苏理工学院 | Method for photocatalytically degrading exhaust gas by electrodeless excimer lamp |
CN104474886B (en) * | 2013-03-20 | 2016-08-24 | 江苏理工学院 | The method of electrodeless quasi-molecule lamp photocatalytic degradation waste gas |
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