UNLOCK the door to molecular secrets
INSTRUMENTATION
with High Resolution n-m-r S p e c t r o s c o p y
The Varian Model V-4300 High Resolution n-m.r (nuclear magnetic reso nance) Spectrometer has stirred the imagination of chemists everywhere. With this new instrument, signals from H 1 , F19, P31, B n , C13 and several other nuclei can be detected, revealing the occurrence of identical nuclei in different chemical environments. High Resolution iwn.r techniques permit rapid and completely non-destruc tive study of small liquid samples, including melted solids and liquefied gases. Outstanding applications include: • Identification of functional groups • Assignment of structural formulas » Analysis of multi-component mixtures
THIS IS N-Nl-R AT WORK (Number 4 of α «·"«) 1K1 D Q RAPID QUANTITATIVE ANALYSIS OF H.O IN D 2 0 INTERPRETATION DATA Samples: (A) 5 > H , 0 in D,0 (control)
,HH2OinD (B)1 (B) 1% 00(con (control)r 20 in D22
^ K W ^ S f f i g S ic) 3.4* H20 in D20 (unknown) ^ = % « ^ » ^ Volume: .03 cc. » • ; , * £ Γ eBÏÏ.™%.SS» Signals observed: Η' ΗϊΞ^ο^ο^» Frequency: 30 mc ° f ° ° ^ = ) | S J,Ç«,«,, ,.gn.| ^SSrni.ii.uss/sec.
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Ion Resonance Mass Spectrometer, General Electric C o . I. Introduction A. Principles of resonance phenomena utilized. B. Development of resonance equations and discussion of accelerating potentials. II. Design features of the mechanical components, inspection and discussion A. Ion resonance tube. B. Vacuum system. C. Sample system. III. Theory and operation of electronic components A. Direct-coupled amplifier. B. Oscillator. C. Emission regulator. D. Vacuum metering panel. IV. Operation and maintenance discussion V. Performance data A. Resolution. B. Sensitivity. C. Analytical ability. D. Cracking pattern stability. E. Examples of applications. VI. Operation Demonstration. Nondispersion Infrared Analyzers, Liston-Becker I n s t r u m e n t Co. I. Introduction A. Principles of infrared analyzers. B . History of development of nondispersion analyzers. 1. Negative type, development in this country. List of manufacturers making this type, with distinctive characteristics. 2. Positive type, development in Europe. List of current manufacturers with characteristic properties. C. Characteristic differences and advantages of each type. II. Typical performance possible with nondispersion analyzers A. Maximum sensitivities obtainable. B. Resolution and discrimination realized on difficult problems. C. Stability realized. Installation problems III. A. Obtaining representative samples. B. Sampling time and flows. C. Filtering and conditioning of samples. IV. Construction of Liston-Becker analyzer A. Sample cells. B. Optical window materials. C. "Unitized" construction. D. Provisions for servicing. V. Typical applications In addition to the lecture, an operating demonstration will be given and slides will be used to illustrate various points. Nuclear M a g n e t i c Resonance ( n - m r) Spectrometer, Varian Associates I.
FOR THE COMPLETE STORY . . . On Varian's Model V-4300 High Resolution n-nvr Spectrometer, write to the Special Products Division for: • • • T H E
Technical Information Bulletins Data Sheets n-nw Table
M A R K O F
II.
L E A D E R S H I P
VARIAN a s s o c i a t e s PALO
A L T O
2,
C A L I F O R N I A
For further information, circle number 32 A on Readers' Service Card, page 39 A
32 A
III.
Introduction A. Fundamental principles of n-m-r. B. Historical background and development of applications. C. Various forms of n-m-r spectroscopy; description of and distinctions between variable frequency, spin echo, and high resolution. D. Typical n-m-r spectra. Details of high resolution spectrometer A. Probe. B. Radio-frequency unit. C. Sweep unit. D. Signal display units. E. Maintenance. Details of associated magnet system A. Over-all design considerations. B. Field homogeneity. C. Field stability. D. Maintenance.
ANALYTICAL
CHEMISTRY
