For Instructors
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If you are teaching mass spectrometry courses you may find it useful to have some photographs in JPEG format at hand. Most of these photographs are exhibited in the printed book while a few a presented here as a bonus.
Of course, only photographs taken by the author can be offered for download whereas third party-material is not included for copyright reasons. In contrast to the book, pictures are in color and some of them may vary from the printed version in that they have no lettering or show slight differences in scale. All photographs are supplied 800 pixels wide. The pictures are collected in the order of their appearance in the book together with abbreviated legends and figure numbers.
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Material from this page may be downloaded for non-commercial educational purposes and be used free of charge as long as the copyright mark is not removed.
Click on the small pictures to enlarge to 800 pixels width, then use right mouse button to open the "save image menu" of your browser.
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Chapter 4
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Fig. 4.16. Flight tube passing through the gap of the magnetic sector of a JEOL JMS-700 instrument seen from the ESA side. The shapes of the pole pieces of the yoke and the additional blocks around the tube are designed to minimize fringing fields. In addition the pole faces are rotated to increase the mass range.
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Fig. 4.23. Photograph of a JEOL JMS-700 double focusing magnetic sector instrument showing its BE geometry.
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Fig. 4.74. Discrete dynode electron multiplier. Photograph of an old-fashioned 16-stage Venetian blind-type SEM. It clearly shows the resistors and ceramics insulators between the stacking dynodes at its side.
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Fig. 4.76. Photograph of a channeltron multiplier.
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Chapter 5
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Fig. 5.2. EI/CI/FAB combination ion source of a JEOL JMS-700 magnetic sector instrument.
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Fig. 5.3. Filaments for EI/CI ion sources. A coiled filament of the VG ZAB-2F (left) and a straight wire filament of the JEOL JMS-700 (right). The shields behind the filament are at the same potential as the wire itself and the white parts are made of ceramics for insulation.
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Fig. 5.5. Reservior inlet of a JEOL JMS-700 sector instrument with the septum injection port opened. The "operation valve" switches between evacuation, isolation and admission of the sample; a needle valve allows regulation of the sample flow. The GC transfer line crosses in the upper background from the GC (left) to the ion source housing (upper right). |
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Fig. 5.6(equivalent). Tip of the DIP of a JEOL JMS-700 sector instrument for use with EI, chemical ionization (CI) and field ionization (FI). The copper probe tip holds the glass sample vial and is fitted to a temperature-controlled heater. The heater, a thermocouple, and circulation water cooling are provided inside. The (white) ceramics insulator protects the operator from the high voltage of the ion source.
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Fig. 5.8. Sample vials for different DIPs. From left: VG ZAB-2F, Finnigan TSQ700 glass and aluminum version, and JEOL JMS-700. The match illustrates the scale.
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Fig. 5.9. Sample vial filled with analyte. The bright spot halfway between the tip of the tweezers and upper rim of the vial is the piece of solid material to be analyzed. Use of more sample does not have any advantage; it only causes ion source contamination.
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Chapter 8
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Fig. 8.4. FD probe inserted into the vacuum lock. FD probes are generally inserted in axial position to leave the vacuum lock of the DIP free for FI use. The emitter wire is now oriented vertically to comply with the beam geometry of the magnetic sector analyzer. |
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Fig. 8.8a. FD emitter holder of a JEOL FD probe. |
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Fig. 8.8b. A drop formed of 1-2 µl analyte solution placed onto the activated emitter by means of a microliter syringe. |
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Fig.8.22b. Emittter wetting in LIFDI. |
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Chapter 10
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Fig. 10.3a. FAB probe of a JEOL JMS-700 magnetic sector instrument. The probe tip with a drop of glycerol placed onto the exchangeable stainless steel FAB target. |
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Fig. 10.3b. FAB: probe tip with a drop of glycerol placed onto the exchangeable stainless steel FAB target. |
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Fig. 10.14. FAB dual-target probe with handle for 180° axial turn to measure mass calibrant and analyte in alternating scans. The target can hold sample on both sides. |
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Chapter 11
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Bonus material. Bruker Scout26 MALDI target with some sample preparations using different matrices. Yellow spots show 9-nitroanthracene, pale yellow-brownish spots are alpha-cyano-4hydroxy-cinnamic acid and white spots are 2,5-DHB. |
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Fig. 11.10. Bruker Scout 384 TM MALDI target. A standard sample plate for MALDI preparations offering a 16 x 24 spot array. The plate measures 84 x 128 mm; spots are 3 mm in diameter. |
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Fig.11.11a. Sample preparation on a Bruker Scout 384 TM MALDI target. |
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Fig.11.11b. Sample preparation showing the resulting crystallized 2,5-DHB matrix on a Bruker Scout 384 TM MALDI target. |
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Bonus material. Sample preparation on a Bruker Scout 384 TM anchor chip MALDI target. The drops of matrix solution become affixed to hydrophilic spots on a hydrophobic surface. |
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Fig.11.11c. Crystallizing 2,5-DHB during solvent evaporation after sample preparation on a Bruker Scout 384 TM anchor chip MALDI target. |
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Analytical Chemistry - CID, IRMPD, ECD, ETD - Chemical Ionization - DART, DESI, DAPCI - Electron Ionization - Electrospray Ionization - Fast Atom Bombardment - Field Desorption - Field Ionization - Inorganic Mass Spectrometry - Isotope Ratio - LIFDI - MALDI - Mass Spectrometry - TOF/TOF - Tandem Mass Spectrometry - Textbook
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Thursday, June 21, 2012
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