DE102004006856B4 - Collector for micro-extraction and analysis of substances to be investigated - Google Patents
Collector for micro-extraction and analysis of substances to be investigated Download PDFInfo
- Publication number
- DE102004006856B4 DE102004006856B4 DE200410006856 DE102004006856A DE102004006856B4 DE 102004006856 B4 DE102004006856 B4 DE 102004006856B4 DE 200410006856 DE200410006856 DE 200410006856 DE 102004006856 A DE102004006856 A DE 102004006856A DE 102004006856 B4 DE102004006856 B4 DE 102004006856B4
- Authority
- DE
- Germany
- Prior art keywords
- collector according
- filling
- layer
- substances
- collector
- 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.)
- Expired - Fee Related
Links
- 239000000126 substance Substances 0.000 title claims abstract description 28
- 238000004853 microextraction Methods 0.000 title claims abstract description 4
- 238000004452 microanalysis Methods 0.000 title claims abstract 3
- 239000000463 material Substances 0.000 claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- -1 polydimethylsiloxane Polymers 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- PYJJCSYBSYXGQQ-UHFFFAOYSA-N trichloro(octadecyl)silane Chemical compound CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl PYJJCSYBSYXGQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 abstract description 4
- 239000002594 sorbent Substances 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 description 5
- 238000004445 quantitative analysis Methods 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001212 derivatisation Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- BIZMUZUXEATCLA-UHFFFAOYSA-N n-[(2,3,4,5,6-pentafluorophenyl)methyl]hydroxylamine Chemical compound ONCC1=C(F)C(F)=C(F)C(F)=C1F BIZMUZUXEATCLA-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2805—Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane
-
- 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
-
- 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
- G01N1/405—Concentrating samples by adsorption or absorption
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N2030/009—Extraction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Sammler zur Mikroextraktion und Analyse von zu untersuchenden Substanzen, umfassend eine Schicht (4) mit einem ersten sorbierenden und/oder adsorbierenden Material, dadurch gekennzeichnet, daß ein Aufnahmeraum (2) mit einer darin gekapselten Füllung (3) aus einem zweiten sorbierenden und/oder adsorbierenden Material mit einer anderen Selektivität als das erste Material vorgesehen ist, wobei die Schicht (4) für die von dem zweiten Material sorbierbaren und/oder adsorbierbaren Substanzen durchlässig ist und die Füllung (3) zumindest teilweise nach außen hin abdeckt.collector for micro-extraction and analysis of substances to be investigated, comprising a layer (4) with a first sorbent and / or adsorbent Material, characterized in that a receiving space (2) with an encapsulated filling (3) of a second sorbent and / or adsorbent material with a different selectivity is provided as the first material, wherein the layer (4) for the of the second material sorbable and / or adsorbable substances permeable is and the filling (3) at least partially outward covering.
Description
Die Erfindung betrifft einen Sammler zur Mikroextraktion und Analyse von zu untersuchenden Substanzen nach dem Oberbegriff des Anspruchs 1.The The invention relates to a collector for microextraction and analysis of substances to be examined according to the preamble of the claim 1.
Ein
derartiger Sammler ist aus
Außerdem wird heutzutage Material zur Aufnahme von zu untersuchenden Substanzen in Form von Polydimethylsiloxan mit eingelagerter Aktivkohle verwendet. Hierdurch wird zwar das Spektrum der aufnehmbaren Substanzen entsprechend erweitert, jedoch läßt sich Aktivkohle nur in einem beschränkten Umfang einlagern. Ferner sind nicht genau bestimmbare Mengen der Aktivkohle wegen ihrer Nachbarschaft zur Außenfläche ungeschützt und können daher aufgenommene leicht flüchtige Substanzen vorzeitig wieder abgeben, während sie hingegen schwer flüchtige nicht mehr abgeben. Hierdurch wird somit eine quantitative Analyse entsprechend beeinträchtigt.In addition, will nowadays material for the absorption of substances to be examined used in the form of polydimethylsiloxane with embedded activated carbon. As a result, although the spectrum of absorbable substances is accordingly extended, but can be Activated carbon only in a limited Store the circumference. In addition, quantities of which are not precisely determinable Activated carbon unprotected because of their proximity to the outside surface and therefore can be easily absorbed volatile They give off substances prematurely, whereas they do not release very volatile ones give more. As a result, a quantitative analysis is accordingly impaired.
Aufgabe der Erfindung ist es, einen Sammler nach dem Oberbegriff des Anspruchs 1 zu schaffen, der ein vergrößertes Aufnahmespektrum für zu untersuchende Substanzen aufweist und eine quantitative Analyse über das gesamte Aufnahmespektrum ermöglicht.task The invention is a collector according to the preamble of the claim 1 to create an enlarged recording spectrum for too has investigative substances and a quantitative analysis of the entire recording spectrum allows.
Diese Aufgabe wird entsprechend der Merkmalskombination von Anspruch 1 gelöst.These Task is according to the combination of features of claim 1 solved.
Dadurch, daß der Sammler einen Aufnahmeraum mit einer darin gekapselten Füllung aufweist, die zumindest teilweise nach außen hin von einer Schicht abdeckt ist, wobei die Füllung und die Schicht aus unterschiedlichen sorbierenden und/oder adsorbierenden Materialien und damit mit unterschiedlicher Selektivität in Bezug auf zu untersuchende Substanzen bestehen, wobei die Schicht für die von dem Material der Füllung sorbierbaren und/oder adsorbierbaren Substanzen durchlässig ist, ergibt sich einerseits ein vergrößertes Aufnahmespektrum für zu untersuchende Substanzen und andererseits wird eine quantitative Analyse über das gesamte Aufnahmespektrum ermöglicht, da die Füllung nicht mit dem Außenraum in Kontakt steht und daher auch keine aufgenommenen Substanzen wieder in den Außenraum abgibt. Diese können vielmehr in einem Chromatographen etwa über Thermodesorption zusammen mit den von dem Material der abdeckenden Schicht aufgenommenen Substanzen desorbiert werden, so daß eine praktisch ungestörte quantitative Analyse ermöglicht wird. Die Kapselung gewährleistet einen luftdichten Abschluß, so daß von der Füllung aufgenommene Substanzen nicht wieder nach außen abgegeben werden können.Thereby, that the Collector has a receiving space with an encapsulated filling, the at least partially to the outside covered by a layer, wherein the filling and the layer of different sorbing and / or adsorbing materials and thus with different selectivity with regard to substances to be investigated, the layer for the from the material of the filling sorbable and / or adsorbable substances is permeable, On the one hand results in an enlarged recording spectrum for to be examined Substances and on the other hand, a quantitative analysis of the entire recording spectrum allows there the filling not with the outside space is in contact and therefore no recorded substances again in the outside space emits. these can rather in a chromatograph about thermodesorption together with the substances taken up by the material of the covering layer be desorbed so that a practically undisturbed quantitative analysis allows becomes. The encapsulation is guaranteed an airtight seal, so that from the filling absorbed substances can not be discharged to the outside again.
Insbesondere ist die abdeckende Schicht hydrophob und/oder lipophob, so daß die Füllung infolge der Kapselung nicht mit Wasser bzw. Ölen oder Fetten in Berührung gelangt.Especially the covering layer is hydrophobic and / or lipophobic, so that the filling due the encapsulation does not come into contact with water, oils or fats.
Die abdeckende Schicht kann auch als selektive, semipermeable Membran wirkend ausgebildet sein. Außerdem kann die abdeckende Schicht auch aus unterschiedlichen, sorbierenden und/oder adsorbierenden Materialien in Mischung oder mehrschichtig zu einander angeordnet gebildet sein.The Covering layer may also be a selective, semi-permeable membrane be effective. Furthermore The covering layer can also be made of different, sorbing and / or adsorbent materials in mixture or multi-layered be formed arranged to each other.
Als Material für die abdeckende Schicht eignet sich beispielsweise Polyethyelenglykol, Silikon, Polydimethylsiloxan, Octadecyltrichlorsilan, Polymethylvinylchlorsilan, Polyacrylat, LDPE (low density Polyethylen) oder Polyimid.When Material for the covering layer is for example polyethylene glycol, Silicone, polydimethylsiloxane, octadecyltrichlorosilane, polymethylvinylchlorosilane, Polyacrylate, LDPE (low density polyethylene) or polyimide.
Als Material für die Füllung, die gewöhnlich aus körnigem Material besteht, aber auch ein einheitlicher, beispielsweise durch Pressen entstandener Körper sein kann, eignet sich beispielsweise Aktivkohle, Polyethylenglykol oder ein Kohlenstoffmolekularsieb wie Carboxene.When Material for the filling, usually out granular Material exists, but also a uniform, for example by Pressing the resulting body may be, for example, is activated carbon, polyethylene glycol or a carbon molecular sieve such as carboxenes.
Die unterschiedliche Selektivität der Materialien für die Füllung und die abdeckende Schicht kann sich auf die Flüchtigkeit und/oder die Polarität der zu untersuchenden Substanzen beziehen. Dementsprechend sind diese Materialien auszuwählen.The different selectivity the materials for the filling and the covering layer may affect the volatility and / or polarity of the substance to be examined Obtain substances. Accordingly, these materials should be selected.
Die abdeckende Schicht als auch die Füllung können gegebenenfalls mit zu untersuchenden Substanzen chemisch reagierende Komponenten aufweisen, wobei Reaktionsprodukte sorbiert bzw. adsorbiert werden, wenn nur die Reaktionsprodukte, nicht aber deren Ausgangssubstanzen chromatographisch nachweisbar sind. Ein Beispiel für die Anwendung hiervon stellt die Extraktion von Aldehyden und Ketonen auf einem mit Pentafluorobenzylhydroxylamin imprägnierten Material dar, wobei die Carbonylfunktionen der interessierenden Verbindungen ein typisches flüchtiges Reaktionsprodukt bilden, das sorbiert, thermisch desorbiert und chromatographisch analysiert werden kann. Andere Beispiele umfassen die Derivatisierung von Phenolen und Aminen durch Acylisierung, die Derivatisierung von Thiolen und die Reaktion von Ethylenoxid mit Bromwasserstoff. So kann die abdeckende Schicht mehrschichtig aufgebaut sein, wobei eine Lage wenigstens ein chemisch reagierende Komponente enthält.The covering layer as well as the filling may optionally have chemically reacting components with substances to be investigated, reaction products being sorbed or adsorbed, if only the reaction products, but not their starting substances, can be detected chromatographically. An example of the application thereof is the extraction of aldehydes and Ketones on a pentafluorobenzyl hydroxylamine impregnated material, the carbonyl functions of the compounds of interest forming a typical volatile reaction product which can be sorbed, thermally desorbed and analyzed chromatographically. Other examples include the derivatization of phenols and amines by acylation, the derivatization of thiols, and the reaction of ethylene oxide with hydrogen bromide. Thus, the covering layer may be multi-layered, wherein a layer contains at least one chemically reacting component.
Ein derartiger Sammler ermöglicht es ferner, die Masse an Material für die Füllung und die abdeckende Schicht entsprechend dem jeweiligen Anwendungsfall aufeinander abzustimmen.One allows such collector it further, the mass of material for the filling and the covering layer according to the respective application to coordinate.
Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further Embodiments of the invention are the following description and the dependent claims refer to.
Die Erfindung wird nachstehend anhand von in den beigefügten Abbildungen dargestellten Ausführungsbeispielen näher erläutert.The Invention is described below with reference to the accompanying drawings illustrated embodiments explained in more detail.
Bei
der in den
Auch
wenn der dargestellte Behälter
Ferner
kann auch in Umkehrung eine Platte aus einem Trägermaterial anstelle der Schicht
Bei
den in den
Bei
Bei
Bei
der in
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410006856 DE102004006856B4 (en) | 2004-02-12 | 2004-02-12 | Collector for micro-extraction and analysis of substances to be investigated |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410006856 DE102004006856B4 (en) | 2004-02-12 | 2004-02-12 | Collector for micro-extraction and analysis of substances to be investigated |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004006856A1 DE102004006856A1 (en) | 2005-09-08 |
DE102004006856B4 true DE102004006856B4 (en) | 2007-01-18 |
Family
ID=34832619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410006856 Expired - Fee Related DE102004006856B4 (en) | 2004-02-12 | 2004-02-12 | Collector for micro-extraction and analysis of substances to be investigated |
Country Status (1)
Country | Link |
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DE (1) | DE102004006856B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2233206B1 (en) | 2009-03-24 | 2015-07-29 | Symrise AG | Flavor extracting device for isolation or analysis of volatile compounds |
WO2018162948A1 (en) * | 2017-03-06 | 2018-09-13 | Beacon Environmental Services, Inc. | Environmental sampling apparatuses, systems, and related methods |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19751968A1 (en) * | 1997-11-24 | 1999-07-29 | Lwg Lausitzer Wasser Gmbh & Co | Manual or automatic micro-extraction of e.g. pesticides from water or air |
EP1039288A2 (en) * | 1999-03-26 | 2000-09-27 | Gerstel Systemtechnik GmbH & Co. KG | Method for solid phase micro-extraction, analysis and collector therefor |
DE20008794U1 (en) * | 2000-04-13 | 2001-01-18 | Sofia Softwareentwicklung Und | Metal cannula for extracting organic substances from liquid and gaseous samples |
DE20203524U1 (en) * | 2002-03-05 | 2002-08-14 | Gerstel Systemtechnik Gmbh | Collector for solid phase micro extraction and analysis of substances to be examined |
US20020150923A1 (en) * | 2000-10-23 | 2002-10-17 | Abdul Malik | Sample preconcentration tubes with sol-gel surface coatings and/or sol-gel monolithic beds |
WO2003046517A1 (en) * | 2001-11-26 | 2003-06-05 | Pawliszyn Janusz B | Device and method for micro sorbent extraction and desorption |
-
2004
- 2004-02-12 DE DE200410006856 patent/DE102004006856B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19751968A1 (en) * | 1997-11-24 | 1999-07-29 | Lwg Lausitzer Wasser Gmbh & Co | Manual or automatic micro-extraction of e.g. pesticides from water or air |
EP1039288A2 (en) * | 1999-03-26 | 2000-09-27 | Gerstel Systemtechnik GmbH & Co. KG | Method for solid phase micro-extraction, analysis and collector therefor |
DE20008794U1 (en) * | 2000-04-13 | 2001-01-18 | Sofia Softwareentwicklung Und | Metal cannula for extracting organic substances from liquid and gaseous samples |
US20020150923A1 (en) * | 2000-10-23 | 2002-10-17 | Abdul Malik | Sample preconcentration tubes with sol-gel surface coatings and/or sol-gel monolithic beds |
WO2003046517A1 (en) * | 2001-11-26 | 2003-06-05 | Pawliszyn Janusz B | Device and method for micro sorbent extraction and desorption |
DE20203524U1 (en) * | 2002-03-05 | 2002-08-14 | Gerstel Systemtechnik Gmbh | Collector for solid phase micro extraction and analysis of substances to be examined |
Also Published As
Publication number | Publication date |
---|---|
DE102004006856A1 (en) | 2005-09-08 |
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