摘要:
A method and apparatus are disclosed wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The invention provides reduced noise and increased signal sensitivity in both API electrospray and APCI operating modes.
摘要:
A method and apparatus are disclosed wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The invention provides reduced noise and increased signal sensitivity in both API electrospray and APCI operating modes.
摘要:
A method and apparatus are disclosed wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The invention provides reduced noise and increased signal sensitivity in both API electrospray and APCI operating modes.
摘要:
A method and apparatus are disclosed wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The invention provides reduced noise and increased signal sensitivity in both APT electrospray and APCI operating modes.
摘要:
.[.The invention teaches the uses of a plurality of electric fields and of orthogonal spray configurations of vaporized analyte which combine so as to operate to enhance the efficiency of analyte detection and mass analysis with a mass spectrometer by reducing vapor in the vacuum system and concomitant noise. Several embodiments of the invention are described for purposes of illustration..]. .Iadd.The invention relates to a method and apparatus for improving signal relative to noise without loss of ion collection efficiency in electrospray mass spectrometry, including liquid chromatography/mass spectrometry..Iaddend.
摘要:
A method apparatus wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The method and apparatus provides reduced noise and increased signal sensitivity in both API electrospray and APCI operating modes.
摘要:
A method and apparatus wherein a plurality of electric fields and of orthogonal spray configurations of vaporized analyte are so combined as to enhance the efficiency of analyte detection and mass analysis. The invention provides reduced noise and increased signal sensitivity in both API electrospray and APCI operating modes.
摘要:
An improved method and apparatus for creating ions through shearing forces of high velocity liquid and gas streams without application of an external electrical field. Ions are susceptible to customary of analysis such as mass spectrometry.
摘要:
The present invention provides, inter alia, apparatuses and methods for ionizing samples that are in gaseous phase or can be vaporized/sublimated. The samples include samples to be analyzed and mass calibrants that serve as standards. In addition, the present invention also provides calibrant formulations that release mass calibrants in a slow, controlled manner.
摘要:
An apparatus and method for generating analyte ions from a sample. An ion generating device is provided having a chamber with an outlet and a surface having a material and means for applying a high velocity gas flow through the chamber toward the outlet such that charged particles are produced by physical interaction between the high velocity gas and the material. The charged particles then induce the generation of primary ions by interaction with molecules of the high velocity gas. The primary ions are emitted from the outlet of the ion generating device toward a sample-bearing surface and analyte ions are generated by impact of the primary ions on the analyte sample on the surface.