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Mass spectrometric system for rapid, automatic and specific identification and quantitation of compounds

  • US 4,008,388 A
  • Filed: 08/04/1975
  • Issued: 02/15/1977
  • Est. Priority Date: 05/16/1974
  • Status: Expired due to Term
First Claim
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1. In a mass spectrometric system comprised of (i) means for measuring the mass spectra of sample compounds;

  • (ii) means for introducing a sample of a pure compound or a mixture of compounds into said measuring means;

    (iii) means for controlling the operation of said measuring means so as to measure the intensities of one or more mass peaks of said sample; and

    (iv) means for data input and output electrically coupled to said control means and to means for analyzing said mass peaks, said analysis means comprising;

    a. first means for storing the mass spectrum of at least one target compound or a contracted mass spectrum thereof;

    b. second means for storing at least one spectral matching criterion;

    c. means for matching said measured mass peaks to corresponding mass peaks of said stored spectrum of said target compound on a probabilistic basis, the degree of said matching being determined with respect to said spectral matching criterion, said matching means being electrically coupled to said first and second storage means and to said measuring means,whereby, said target compound is identified as being present in said sample or as not being present therein in accordance with said spectral matching criterion.

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