WO2002008747A1 - Vorrichtung zur vorbereitung der qualitativen und quantitativen analyse von substanzflecken auf einer dünnschichtplatte - Google Patents
Vorrichtung zur vorbereitung der qualitativen und quantitativen analyse von substanzflecken auf einer dünnschichtplatte Download PDFInfo
- Publication number
- WO2002008747A1 WO2002008747A1 PCT/EP2001/008133 EP0108133W WO0208747A1 WO 2002008747 A1 WO2002008747 A1 WO 2002008747A1 EP 0108133 W EP0108133 W EP 0108133W WO 0208747 A1 WO0208747 A1 WO 0208747A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thin
- sorbent
- substance
- head
- layer plate
- Prior art date
Links
Classifications
-
- 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
- G01N30/90—Plate chromatography, e.g. thin layer or paper chromatography
- G01N30/95—Detectors specially adapted therefor; Signal analysis
Definitions
- the invention relates to a device for preparing the quantitative analysis of substance stains on a ductile thin-layer plate in thin-layer chromatography.
- the principle of thin layer chromatography is to spread a suitable sorbent in a thin layer on a thin layer plate, to dry this layer, to activate it if necessary, and then to apply a drop of the starting solution to be analyzed to a "starting point".
- the plate After the solvent used has been evaporated off, the plate is placed in a closed container with solvent which, due to capillary action, passes through the layer and migrates upwards.
- the mixture is separated into a number of spots corresponding to its number of components, all of which must then lie in a line perpendicularly from the starting point up to the rising height of the solvent (solvent front).
- the individual spots can be analyzed qualitatively, for example by recognizing them by their own color in daylight or by making them visible by means of reagents or other aids, such as fluorescent additives or UV light.
- a substance can also be identified with the help of reference substances that are also included.
- a device of the type mentioned has a rinsing head which can be placed on the thin layer plate coated with the dried sorbent and which is provided with a protruding, closed rim cutter with which the sorbent can be penetrated to the top of the thin layer plate and against the surrounding sorbent can be sealed, and with at least one supply line to the cavity formed by the rinsing head and within the rim cutter, through which an elution liquid eluting the substance of the substance stain can be introduced.
- a “rinsing head” is to be understood as a device which brings a rinsing liquid to a functional area and rinses or dissolves the amount of liquid rinsed off there.
- the wreath cutting edge penetrates into the dried sorbent layer, to the surface of the solid thin-layer plate, which, however, must not be brittle in order not to shatter.
- the ring cutter then forms a firm sealing ring against the rest of the sorbent layer, so that "channeling" is reliably avoided.
- the flushing head can work with only one supply line or more than two supply lines, then however, it is preferable to use a flushing head with only one supply line and one discharge line.
- the cavity which can be formed by the wreath cutting edge and, if appropriate, an additional hollow, has a contact surface opposite the thin-layer plate surface, which lies on the sorbent when the wreath cutting edge is placed on or keeps a small distance from it. There is therefore a precisely defined wash cabinet.
- the height of the crown cutting edge measured from the contact surface to the actual cutting tip, should only be 0.05 to 0.5 mm larger than the average sorbent layer thickness.
- the ring cutting edge can also be exchangeably attached to the flushing head so that it can be replaced after a certain time, if the actual cutting edges have become blunt.
- Stainless steel is particularly suitable as the material for the ring cutter.
- the flushing head can have a cylindrical plunger, into which the rim cutting edge is embedded, the actual cutting area protruding.
- the stamp can be made of a plastic that is inert to the eluents commonly used. In particular, a stamp made of polyether ether ketone (PEEK) has proven itself.
- FIG. 1 shows a flushing head with wreath edge in a sectional view
- Figure 2 seen a rinsing head from the cutting side
- Figure 3 shows the device according to the invention with a
- FIG. 4 and 5 circuits for using the new device.
- FIG. 1 shows an elution stamp 100 which can be clamped in a spindle press frame 200 (see FIG. 3) together with a thin-layer plate 1.
- the elution stamp 100 has a clamping body which is turned in one piece and is T-shaped in projection, which is cylindrical overall and has a support part 12 and a sleeve part 13.
- the sleeve part 13 carries a flushing head 2, which is shown in section.
- the rinsing head 2 is essentially a cylindrical part made of polyether ether ketone (PEEK), which is rotated as a solid body and has two countersunk bores 14, 15 on its upper side, which protrude into the interior of the rinsing head 2 by about 3/5.
- PEEK polyether ether ketone
- a fine bore 16 which belongs to a supply line 6, continues from the bore 15 to a support surface 17, which forms the lower, flat end of the plastic flushing head part.
- the further line, which ends in the bore 14, is identified as a discharge line 7. It ends at the bearing surface 17 in a recess 8, which is a cylindrically drilled extension.
- a fine filter 10 is installed here, the function of which will be explained below.
- a circular ring-shaped cutting edge 3 is inserted, which is made of V2A steel and ends in a sharp cutting tip 23 which protrudes about 0.3 mm. Accordingly, there is a cavity which protrudes beyond the bearing surface 17 within the ring cutting edge 3.
- the principle of thin-layer chromatography is to spread a suitable sorbent 4 on a thin-layer plate 1, which has dried and to which a drop of the starting solution to be analyzed is applied at a starting point. With the help of a solvent, which migrates as a result of capillary action
- the ring edge 3 penetrates the sorbent 4 up to the top of the thin layer plate 1 and seals it against the surrounding sorbent.
- the bearing surface 17 is in contact with the sorbent or slightly above it.
- an elution liquid for example water or methanol
- the eluent spreads within the cavity, which is completely filled with the substance stain and the sorbent area, and then flows back through the fine filter 10 into the discharge line 7. It is essential that the hollow space 5 firmly against the surrounding sorbent during the entire elution time, in which 0.01-1 ml / min are passed at a constant flow during the time of the substance elution of typically 0.5-5 min is sealed so that "chanelling" cannot occur.
- FIG. 2 shows a top view of the flushing head and the cavity 5.
- the ring cutting edge 3 is circular and surrounds the bearing surface 17.
- the elution liquid discharged through the discharge line 7 is examined in a mass spectrometer, as is known per se. However, it is also possible to use other analyzers.
- a spindle press frame 200 is used for this (see FIG. 3).
- the spindle press frame consists of a frame 30 which has a base 31 and a yoke 32.
- the yoke is pierced so that the sleeve part 13 can be inserted through it.
- the sleeve part is provided with a groove 18 through which a fork plate 36 can be pushed so that it lies below the yoke 32.
- a stamp 34 presses against the intermediate thin-layer plate 1, so that it in turn contacts the ring cutter 3 from above comes, which can be pressed when tightening a screw spindle 35.
- the thin-layer plate is made of a ductile material that does not shatter when pressure is applied at certain points.
- a sheet of aluminum or an aluminum alloy is preferably suitable for this. It has been shown that considerable pressures can be absorbed within the cavity 5, since there is intimate contact between the ring cutter 3 and the surface of the thin-layer plate 1. Pressures of 60 bar are manageable after trials.
- the possible uses of the device for preparing the quantitative analysis are explained with reference to FIGS. 4 and 5.
- the elution stamp 100 is placed with the wreath cutting edge on a thin layer plate in the area of a substance stain and clamped and pressed into a spindle press frame with counter stamp 34 until the protruding, closed wreath cutting edge 3 has cut into the sorbent, to the top of the thin layer plate 1.
- an elution liquid coming from the HPLC pump 41 can first be passed through a shunt without eluted substance.
- the liquid flows through the feed line 6 to the cavity within the ring cutting edge 3 and dissolves the substance stain. It is to be avoided that parts of the sorbent get into the discharge line 7.
- the fine filter 10 is provided for this.
- the eluted substance with the elution liquid is introduced via the control valve 40 into an ESI / APCI source, ie into the ion source of a mass spectrometer, with which a ne quantitative or qualitative analysis of the substance can be carried out, as is known per se.
- Figure 5 shows an adjustment of the control valve 40 so that a briefly different solvent flow is possible.
- the device is switched in such a way that an idle loop 24 is possible, through which a certain amount of eluent can flow continuously until use is required, as shown in FIG. 4. ,
- the elution of the substance within the rinsing chamber is exhaustive.
- the quantification properties depend on the connected detection system.
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- 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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001289655A AU2001289655A1 (en) | 2000-07-26 | 2001-07-14 | Device for preparing the qualitative and quantitative analysis of substance spots on a thin-film plate |
EP01969386A EP1305620A1 (de) | 2000-07-26 | 2001-07-14 | Vorrichtung zur vorbereitung der qualitativen und quantitativen analyse von substanzflecken auf einer dünnschichtplatte |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000136293 DE10036293C2 (de) | 2000-07-26 | 2000-07-26 | Vorrichtung zur Vorbereitung der qualitativen und quantitativen Analyse von Substanzflecken auf einer Dünnschichtplatte |
DE10036293.1 | 2000-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002008747A1 true WO2002008747A1 (de) | 2002-01-31 |
Family
ID=7650210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/008133 WO2002008747A1 (de) | 2000-07-26 | 2001-07-14 | Vorrichtung zur vorbereitung der qualitativen und quantitativen analyse von substanzflecken auf einer dünnschichtplatte |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1305620A1 (de) |
AU (1) | AU2001289655A1 (de) |
DE (1) | DE10036293C2 (de) |
WO (1) | WO2002008747A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011010265A1 (de) * | 2009-07-24 | 2011-01-27 | Camag | Verfahren und vorrichtung zur vorbereitung von substanzen für qualitative und quantitative analysen |
EP2330402A1 (de) | 2009-12-01 | 2011-06-08 | Spark Holland B.V. | Verfahren und Vorrichtung zur Desorption einer Blutprobe aus einem medizinischen Testblatt |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020091173A (ja) * | 2018-12-05 | 2020-06-11 | 山善株式会社 | 薄層クロマトグラフ分取方法及び薄層クロマトグラフ用分取装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5208458A (en) * | 1991-11-05 | 1993-05-04 | Georgia Tech Research Corporation | Interface device to couple gel electrophoresis with mass spectrometry using sample disruption |
EP1010468A1 (de) * | 1998-12-14 | 2000-06-21 | FENN, John B. | Verfahren und Vorrichtung zur Elektrospray-Ionisation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1644880A1 (ru) * | 1988-12-05 | 1991-04-30 | Институт питания АМН СССР | Способ количественного определени бензойной и сорбиновой кислот в пищевых продуктах и напитках |
-
2000
- 2000-07-26 DE DE2000136293 patent/DE10036293C2/de not_active Expired - Lifetime
-
2001
- 2001-07-14 EP EP01969386A patent/EP1305620A1/de not_active Ceased
- 2001-07-14 AU AU2001289655A patent/AU2001289655A1/en not_active Abandoned
- 2001-07-14 WO PCT/EP2001/008133 patent/WO2002008747A1/de not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5208458A (en) * | 1991-11-05 | 1993-05-04 | Georgia Tech Research Corporation | Interface device to couple gel electrophoresis with mass spectrometry using sample disruption |
EP1010468A1 (de) * | 1998-12-14 | 2000-06-21 | FENN, John B. | Verfahren und Vorrichtung zur Elektrospray-Ionisation |
Non-Patent Citations (1)
Title |
---|
WILSON I D: "The state of the art in thin-layer chromatography-mass spectrometry: a critical appraisal", JOURNAL OF CHROMATOGRAPHY A, ELSEVIER SCIENCE, NL, vol. 856, no. 1-2, 24 September 1999 (1999-09-24), pages 429 - 442, XP004180089, ISSN: 0021-9673 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011010265A1 (de) * | 2009-07-24 | 2011-01-27 | Camag | Verfahren und vorrichtung zur vorbereitung von substanzen für qualitative und quantitative analysen |
EP2330402A1 (de) | 2009-12-01 | 2011-06-08 | Spark Holland B.V. | Verfahren und Vorrichtung zur Desorption einer Blutprobe aus einem medizinischen Testblatt |
US8586382B2 (en) | 2009-12-01 | 2013-11-19 | Spark Holland B.V. | Method and apparatus for desorption of a blood sample from a medical test sheet |
US9207151B2 (en) | 2009-12-01 | 2015-12-08 | Spark Holland B.V. | Method and apparatus for desorption of a blood sample from a medical test sheet |
Also Published As
Publication number | Publication date |
---|---|
EP1305620A1 (de) | 2003-05-02 |
DE10036293C2 (de) | 2002-08-14 |
AU2001289655A1 (en) | 2002-02-05 |
DE10036293A1 (de) | 2002-02-14 |
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