Method to generate correlative data from various products of the

Details Method to generate correlative data from various products of the Method to generate correlative data from various products of the

1977-03-14

1978-10-24

Smith, Alfred E.

Radiant energy

Ionic separation or analysis

Methods

250288, H01J 3934, B01D 5944

Patent

active

041223438

ABSTRACT:
In a method generating correlative data from various products of thermal degradation of biological specimens and comprising sequential steps for each specimen of degrading such specimen by heating such specimen so as to cause various products of thermal degradation of such specimen to be evolved, ionizing the products of thermal degradation of such specimen by a technique causing negligible fragmentation, detecting ion currents for such specimen, and recording such detected ion currents, an improvement is attained wherein each specimen is heated in an identical non-isothermal time-dependent heating sequence, wherein a three-dimensional array comprising a large and sufficient number of ion currents, which correspond to substantially all detectible ratios of mass-to-charge within a range at a large and sufficient number of successive instants during the respective heating sequences, are detected and recorded for each specimen, and representative data from the three-dimensional array thus recorded for each one of such specimens are correlated to representative data from the three-dimensional array thus recorded for each other of the specimens. Therein, one dimension of each array represents ion currents, another dimension of such array represents mass-to-charge ratios, and another dimension of such array represents specimen temperatures.

REFERENCES:
"Nonisothermal Kinetics Studies of the Hydrodesulfurization of Coal", Yergey, et al., I & EC Process Design & Development, vol. 13, pp. 233-240, Jul. 1974.
"Thermal Analysis - Mass Spectrometer Computer System and its Application to the Evolved Gas Analysis of Green River Shale & Lunar Soil Samples", Gibson, 23 Confer. on Anal., Chem. and Appl. Spectroscopy, 1972, pp. 243-255.

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