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  • 1990-1994  (1)
  • 1970-1974  (1)
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  • 1
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The applicability of the moving belt high-performance liquid chromatography/mass spectrometry (HPLC/MS) interface to the analysis of high molecular weight polycyclic aromatic compounds (PACs) in a complex sample derived from coaltar is investigated. This interface provides good preservation of chromatographic integrity and useful electron ioniation spectra of thermally stable PACs of low to moderate volatility up to molecular masses of at least 580 Da. It is concluded that this HPLC/MStechnique will be useful in the analysis of such complex samples, provided a large enoughsuite of standard compounds can be made available.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 7 (1974), S. 539-546 
    ISSN: 1612-1112
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Minicomputers are often underemployed and could be replaced by less powerful systems. The need for a product with characteristics intermediate between the minicomputer and hardwired systems resulted recently in the commercialization of inexpensive microprocessor units. A general purpose microcomputer has been designed around such a microprocessor unit, and the capabilities and limitations of this new device, when used to solve problems encountered in an analytical laboratory, are reported. Examples include: (1) on-line filtering of an analog signal at the output of a liquid chromatograph, (2) use as a buffer memory to rapidly store data from a GC/MS and then output it slowly on an inexpensive recorder, and (3) the analysis of noise from a new liquid chromatography detector using a conventional recorder as a storage oscilloscope. Applications for these inexpensive units are limitless, and we foresee their use in almost every field of instrumentation in future years.
    Type of Medium: Electronic Resource
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