EP2350604A1 - Probensammler und probensammeleinrichtung für eine analyseeinrichtung sowie verfahren zu dessen betrieb - Google Patents
Probensammler und probensammeleinrichtung für eine analyseeinrichtung sowie verfahren zu dessen betriebInfo
- Publication number
- EP2350604A1 EP2350604A1 EP09796984A EP09796984A EP2350604A1 EP 2350604 A1 EP2350604 A1 EP 2350604A1 EP 09796984 A EP09796984 A EP 09796984A EP 09796984 A EP09796984 A EP 09796984A EP 2350604 A1 EP2350604 A1 EP 2350604A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sample
- sample collector
- collector
- gas
- wiper element
- 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- Withdrawn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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing 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
- G01N2001/002—Devices for supplying or distributing samples to an analysing apparatus
- G01N2001/007—Devices specially adapted for forensic samples, e.g. tamper-proofing, sample tracking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N2001/022—Devices for withdrawing samples sampling for security purposes, e.g. contraband, warfare agents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N2001/028—Sampling from a surface, swabbing, vaporising
Definitions
- Sample collector and sample collection device for an analysis device and method for its operation
- the invention relates to a sample collector and a sample collecting device for an analysis device for the analysis of trace elements and a method for its operation.
- Detecting trace elements is becoming increasingly important in the face of increasing threats from terrorist actions.
- There are basically two different methods to distinguish namely the sampling of the ambient air through the intake, in particular from the vicinity of an object to be examined. This can be done, for example, by guiding a person to be examined with regard to the trace elements into a chamber and then sucking gas out of this and feeding it to an analysis.
- the second method is the examination of surfaces of an object to be examined, e.g. a suitcase handle or a human hand, m with regard to adhering trace elements.
- the surface to be examined is conventionally manually wiped off by means of a fabric-like wiping element and thus possible trace elements are sheared off from this surface.
- the wiping element is placed with the sample material in a Desorbierhunt and there are desorbed at elevated temperature by means of a gas stream trapped in the wiper element trace elements, converted into molecular form and an analysis device, in particular an ion spectrometer supplied.
- the sample collectors or methods for operating sample collection devices used for the latter method have the disadvantage of inherent uncertainties or measurement inaccuracies. Due to different wiping techniques by different operating personnel, the placement of the benmaterials in the wiping element Undefined which can lead to the analytical system functioning inadequately or not at all, for example when wiping with a fabric edge. Because if the heat source in the desorbing chamber does not act on the correct location on the wiper element, the trace elements present in themselves can not or only insufficiently detected. Another source of error may result from a wrong or indeterminate arrangement of the wiper element in the desorbing chamber. Another Def ⁇ lerán may consist of a repeated sampling by the same operator due to impurities, especially on the hands, resulting. Sample material from a previous sampling can adhere to the operator's glove and reach the wiper element in the following sampling, thus leading to the false display of non-existent trace elements.
- the object of the invention is to provide a sample collector which enables the most reliable sample collection possible, to provide a sample collection device which enables the most reliable detection of the sample adhering to the sample collector or to provide a method which provides as much as possible reliable sampling allows.
- a first feature of the invention provides that the sample collector is provided with a support member having a convex surface on which the wiping member is mounted surface-lying.
- convex is understood to mean a geometric shape that is curved in one or two mutually perpendicular directions, preferably a curvature in one direction in the form of a cylindrical surface cut-out
- this surface shape when handled by skilled operators, will lie approximately in the center of the wiping element and can thus be treated in a targeted manner in the subsequent desorbing step
- This surface shape also enables efficient wiping of a multiplicity of different surface shapes and surface irregularities
- the wiping process is simple and easy to standardize, and operators can be quickly communicated, and reproducible sampling conditions can also be achieved in the case of different surfaces I'm an operator.
- the support member may be curved in two directions to allow a spherical cap-like shape, which allows collection of the sample material on a limited spot.
- the wiping surface of the wiping member is shaped in a defined manner and allows a concentrated collection of sample material in the small apical region, which is normally located approximately centrally on the wiper member.
- the support member is preferably designed to be flexible, at least in the apical region, in order to be able to scan irregular surfaces.
- the support member consists essentially of a metal sheet. This development is simple and inexpensive to manufacture, easy to handle and allows a Desor- biervorgang in the Desorbierhunt at elevated temperatures.
- this support plate is provided with a plurality of passages for the passage of gas, which is particularly advantageous if a gas is to be passed through the wiper element in the Desorbiervorgang for the purpose of desorbing the sample material.
- the support member may alternatively be made substantially as a grid structure, whereby a high gas permeability is ensured along the entire surface.
- the support member may alternatively consist of an open-pore metal foam or of a rigid metal structure, in the middle of an existing such metal foam area is present.
- the wiping element is preferably made of a fabric, a non-woven or an open-pored foam, in order to facilitate the adhesion of trace elements during the wiping process but at the same time also to allow removal of the sample material during the desorbering process into the desorbing chamber.
- a preferred embodiment of the invention provides that the support member and the wiper element are firmly connected to each other, so form an integral unit, which greatly facilitates handling.
- a combination part can be taken from a Vorratsreservois, then the wiping operation is carried out and then this part is completely brought into the Desorbierhunt. This avoids the significant additional handling steps of conventional systems that can lead to contamination or failure.
- Desorbiervorgang that is taken from the combination part of the Desorbierhunt and disposed of.
- the sample collector comprises a handling handle which is attached to the support member.
- a handling handle may be an integral part of the sample collector, so that handling handle, teiltützteil and wiping element form a unit that is used together and disposed of.
- a sample collection device using the sampler according to the invention enables the above maril ⁇ derten benefits.
- a sample collecting device preferably has a plug-in slot , which comprises the cross- sectional shape of the sample collector and thus ensures that it can be inserted only in a clearly defined manner. In this case, a substantial separation of the sample collection inside of the environment can be achieved and thus a falsification of the measurement result by the ambient air can be avoided.
- the desorbing chamber comprises a heating device which is operable for the defined continuous heating of the sample material for its desorption. This means that the heating device is first switched off and only after placing the sample collector inside the Desorbierhunt the heater is activated, resulting in a continuous heating of the sample collector and thus the sample material.
- a targeted air stream flows through the desorbing chamber, which desorbs the sample material from the wiping element, wherein as a result of increasing heating different trace elements are desorbed at different temperatures and converted into molecular form.
- this heater is designed as a halogen spotlight, because it can be provided a structurally simple and highly efficient fast-acting heater.
- the heating device may also be designed as a heating plate, which is then adapted to the back-side shape of the support part.
- the heating plate When forming the support member as a curved metal sheet, the heating plate will have substantially the same shape as the curved support member, so that the support member is pressed with the rear side against the heating plate for the purpose of heating or in permanently mounted sample collector inside the Desorbierhunt is the Heating plate moves against the support member.
- the desorbing chamber comprises guiding and holding elements, by means of which the sample collector can be inserted and placed in a defined manner.
- the sample collector can be inserted and placed in a defined manner.
- Such elements also preferably include special designs that inverted one Prevent introduction (eg the wiper element on the wrong side).
- the support part of the sample collector is not permeable to gas, so that the gas stream, which serves to desorb the sample material from the wiper element, must be guided past on the wiper element side.
- the heating device is then arranged on the opposite side of the sample collector located in the desorbing chamber and thus heats the sample collector from the rear side.
- the purge gas for desorbing the sample material is passed from the back of the sampler through the gas-permeable support member and the wiping member and then, after exiting the wiping member, is supplied to the analysis unit.
- the heating element is provided on the back side of the wiper element for acting on the gas-permeable support part.
- An inventive method for operating a sample collector device provides that a sample collector is used with the features described above and this is wiped over the surface to be examined and then fed directly to the Desorbierhunt in which takes place by means of heating the sample collector, a desorption of the sample material.
- the convex Probensaitunler is moved perpendicular to the substantially linear bearing surface on the surface to be examined in order to effect a sample collection in the maximum possible width.
- FIG. 1 shows a perspective view of a sample collector
- FIG. 2 shows a second perspective view of the sample collector according to FIG. 1 from the rear side
- FIG. 3 shows an exploded perspective view of the sample collector according to FIGS. 1 and 2 in the disassembled state
- FIG. 4 is a schematic sectional view of a first embodiment of a desorbing chamber
- FIG. 5 is a schematic sectional view of a second embodiment of a desorbing chamber.
- a sample collector 10 is shown in perspective. This comprises a handling handle 12 to which a curved support member 14 and a wiper element 16 is attached.
- the handling handle 12 includes a bow-shaped retention area and two retention pins 18 that cooperate with conforming guides 20 in the support member 14 to effect rapid attachment or removal of the handling handle 12 from the support member 14.
- the wiper member 16 On the convex shaped top of the support member 14, the wiper member 16 is attached. It can either be removable from the support member 14, as shown in Figure 3, or attached thereto, in particular by gluing or clamping along the outer edges.
- the sample collector 10 of Operators are taken at the handling handle 12 and moved along the arrow shown in Figure 2, whereby the sample material is collected in a narrow area in the middle of the wiper element 16 when wiping on a flat surface.
- FIG. 4 shows a first embodiment of a desorbing chamber 40a, which comprises gas inlets 42a for the introduction of purge gas and a gas outlet 44, which is connected to an analysis unit (not shown).
- the desorbing chamber 40a comprises guides 46 for guiding and holding a sample collector 10.
- the sample collector 10 is arranged in the desorbing chamber 40a such that the support part 14 is arranged at the bottom and the wiper element 16 at the top.
- a halogen heater 48 is arranged, the radiation 50 directed to the support member 14.
- a afflicted with sample material the sample collector 10 is pushed with the help of guides 46 in the desorbing ⁇ chamber 40a.
- a heating of the support member 14 by means of the emitted from the halogen heater 48 thermal radiation 50, whereby the support member 14 is heated in a few seconds up to about 200 0 C.
- This heat is transferred from the support member 14 to the wiper member 16 and the sample material therein, whereby it is desorbed by the wiper member 16 and converted into molecular gaseous form.
- the trace elements desorbed from the wiping element 16 are entrained by means of the purge gas flow from the gas inlets 42a to the gas outlet 44 and supplied to the analysis unit, not shown, for their physical or chemical analysis.
- the second embodiment of a desorbing chamber 40b shown in FIG. 5 has a very similar construction.
- One difference is that only one gas-permeable sample collector embodiment 10b can be used, in which the support part 14b is gas-permeable. is permeable, consists in the embodiment shown of an open-cell metal foam.
- a specimen collector 10b containing sample material is pushed into the desorbing chamber 40b with the aid of the guides 46.
- This is followed by heating of the support member 14b by means of the radiation emitted by the halogen heater 48 heat radiation 50, which makes the supporting part 14 is heated in a few seconds up to about 200 0 C.
- This heat is transferred from the support member 14b to the wiping member 16 and the sample material therein, thereby desorbing it from the wiping member 16 and converting it to molecular gaseous form.
- a purge gas passes through the gas inlets 42b into the desorbent can 40b, flows through the gas-permeable support member 14b and the sample-containing wiper element 16 and desorbs the trace elements of the sample material from the wiper element 16 and supplies them via the gas outlet 44 of the analysis unit, not shown.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (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
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008059112A DE102008059112A1 (de) | 2008-11-26 | 2008-11-26 | Probensammler und Probensammeleinrichtung für eine Analyseeinrichtung sowie Verfahren zu dessen Betrieb |
PCT/EP2009/065719 WO2010060899A1 (de) | 2008-11-26 | 2009-11-24 | Probensammler und probensammeleinrichtung für eine analyseeinrichtung sowie verfahren zu dessen betrieb |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2350604A1 true EP2350604A1 (de) | 2011-08-03 |
Family
ID=41822394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09796984A Withdrawn EP2350604A1 (de) | 2008-11-26 | 2009-11-24 | Probensammler und probensammeleinrichtung für eine analyseeinrichtung sowie verfahren zu dessen betrieb |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110259127A1 (de) |
EP (1) | EP2350604A1 (de) |
AU (1) | AU2009319010A1 (de) |
CA (1) | CA2744295A1 (de) |
DE (1) | DE102008059112A1 (de) |
WO (1) | WO2010060899A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102109434B (zh) * | 2009-12-24 | 2013-02-20 | 同方威视技术股份有限公司 | 采样部件、进样装置及离子迁移谱仪 |
DE102010027074B4 (de) * | 2010-07-13 | 2013-01-24 | Eads Deutschland Gmbh | Verfahren und Vorrichtung zur Detektion von Sprengstoffpartikeln in einem Gasstrom |
WO2012012657A2 (en) * | 2010-07-21 | 2012-01-26 | Griffin Analytical Technologies, L.L.C. | Substrate analysis inlet apparatuses, substrate analysis instruments, and substrate analysis methods |
EP2600146A1 (de) | 2011-12-01 | 2013-06-05 | EADS Deutschland GmbH | Probenträger mit Kalibriersubstanz |
MX2015003526A (es) * | 2012-09-21 | 2015-10-14 | Smiths Detection Watford Ltd | Unidad de extraccion por absorcion termica de recoleccion de muestra. |
CN103364219B (zh) * | 2013-06-26 | 2016-03-16 | 国家电网公司 | 一种绝缘子盐密取样装置 |
CN106644553A (zh) * | 2016-12-08 | 2017-05-10 | 清华大学 | 擦拭采样装置、读卡设备和闸机设备 |
WO2018195359A1 (en) * | 2017-04-20 | 2018-10-25 | Institute For Environmental Health, Inc. | Apparatus for sampling surfaces |
CN107505151A (zh) * | 2017-08-21 | 2017-12-22 | 国网山东省电力公司电力科学研究院 | 一种绝缘子污秽人工取样装置及其取样方法 |
GB2574262A (en) * | 2018-06-01 | 2019-12-04 | Smiths Detection Watford Ltd | Method and apparatus |
US11776800B2 (en) | 2019-06-20 | 2023-10-03 | Hitachi High-Tech Corporation | Substance analyzer and substance analysis method |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2185571A (en) * | 1986-01-10 | 1987-07-22 | British Nuclear Fuels Plc | Swabbing device |
US5373748A (en) * | 1992-09-22 | 1994-12-20 | University Of Medicine And Dentistry Of New Jersey | Wipe template sampler |
GB2280133A (en) * | 1993-07-15 | 1995-01-25 | Ford Motor Co | Abrasive instrument for sample collection. |
FR2708740B1 (fr) * | 1993-08-02 | 1995-09-15 | Proengin | Dispositif destiné à préléver des substances liquides ou solides sur une surface. |
CA2137604A1 (en) * | 1994-12-08 | 1996-06-09 | Gerald Drolet | Apparatus and method for collecting samples for ims(ion mobility spectrometers) analyzers and the like |
US5859375A (en) * | 1996-04-03 | 1999-01-12 | Barringer Research Limited | Apparatus for and method of collecting trace samples for analysis |
US6300140B1 (en) * | 1997-10-01 | 2001-10-09 | Leonard Bloom | Rapid test employing an adhesive slide |
US7350257B2 (en) * | 1998-06-12 | 2008-04-01 | Rapid Brands Corporation | Cleaning tool with removable cleaning sheets |
US6642513B1 (en) * | 1998-10-06 | 2003-11-04 | General Electric Company | Materials and apparatus for the detection of contraband |
US6572825B1 (en) * | 1999-10-04 | 2003-06-03 | Sandia Corporation | Apparatus for thermally evolving chemical analytes from a removable substrate |
US6446514B1 (en) * | 2000-01-18 | 2002-09-10 | Barringer Research Limited | Combined particle/vapor sampler |
US6383804B1 (en) * | 2000-07-13 | 2002-05-07 | International Bioproducts, Inc. | Sampling device with snap-off head and method of use |
US6397690B1 (en) * | 2000-09-26 | 2002-06-04 | General Electric Company | Tools for measuring surface cleanliness |
US6382036B1 (en) * | 2000-09-26 | 2002-05-07 | General Electric Company | Apparatus for measuring surface particulate contamination |
JP2004212073A (ja) * | 2002-12-27 | 2004-07-29 | Hitachi Ltd | 危険物探知装置及び危険物探知方法 |
JP3800422B2 (ja) * | 2003-03-31 | 2006-07-26 | 株式会社日立製作所 | 特定薬物の探知方法及び探知装置 |
WO2009023576A1 (en) * | 2007-08-10 | 2009-02-19 | L-3 Communications Cyterra Corporation | Reusable material for collecting samples for analysis |
CN101363778B (zh) * | 2007-08-10 | 2011-06-15 | 同方威视技术股份有限公司 | 一种可防止采样载体变形的手持式采样装置及方法 |
CN101571458B (zh) * | 2008-04-29 | 2011-05-11 | 同方威视技术股份有限公司 | 一种手持式擦拭采样装置 |
US8127627B2 (en) * | 2009-06-04 | 2012-03-06 | World Bioproducts, Llc | Device for collecting samples and method of use |
-
2008
- 2008-11-26 DE DE102008059112A patent/DE102008059112A1/de not_active Ceased
-
2009
- 2009-11-24 WO PCT/EP2009/065719 patent/WO2010060899A1/de active Application Filing
- 2009-11-24 US US13/131,315 patent/US20110259127A1/en not_active Abandoned
- 2009-11-24 EP EP09796984A patent/EP2350604A1/de not_active Withdrawn
- 2009-11-24 AU AU2009319010A patent/AU2009319010A1/en not_active Abandoned
- 2009-11-24 CA CA2744295A patent/CA2744295A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2010060899A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110259127A1 (en) | 2011-10-27 |
WO2010060899A1 (de) | 2010-06-03 |
DE102008059112A1 (de) | 2010-06-17 |
CA2744295A1 (en) | 2010-06-03 |
AU2009319010A1 (en) | 2010-06-03 |
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Inventor name: MARTIN, ULRICH Inventor name: KESSLER, MATTHIAS Inventor name: BEER, SEBASTIAN Inventor name: ZIEMANN, THOMAS Inventor name: LEGNER, WOLFGANG |
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