Methods and systems for multiple charge correction of electrical mobility spectrometer data
AssigneeClarkson University
InventorsSuresh Dhaniyala, Meilu He
Life of this patent
Estimating the term…
Abstract
Systems and methods for determining particle size distribution from electrical mobility spectrometry (EMS) measurements in the presence of multiply charged particles. EMS data comprising zeroth order singly-charged particle size distribution information for one or more EMS channels is obtained and fitted using a Gumbel distribution function to obtain a fit function value. The obtained fit function value is used to correct for multiply-charged particle contribution to the received EMS data.
Claims20
A method for determining particle size distribution from electrical mobility spectrometry (EMS) measurements in the presence of multiply charged particles, the method comprising the steps of:
- obtaining, via an electrical mobility spectrometer, EMS data, wherein the received EMS data comprises a particle signal for one or more EMS channels;
- calculating, using a processor, a zeroth order singly-charged particle size distribution from the particle signals in the one or more EMS channels;
- fitting, by the processor using a distribution function, the calculated zeroth order singly-charged particle size distribution to obtain a fit function value;
- correcting, by the processor using the obtained fit function value, for multiply-charged particle contribution to the received EMS data;
- and
- providing an output to a user comprising the fit and corrected particle size distribution.
A non-transitory machine readable storage medium having stored thereon a computer program for determining particle size distribution from electrical mobility spectrometry (EMS) measurements in the presence of multiply charged particles, the computer program comprising instructions for causing the machine to perform the steps of:
- obtaining, via an electrical mobility spectrometer, EMS data, wherein the received EMS data comprises a particle signal for one or more EMS channels;
- calculating a zeroth order singly-charged particle size distribution from the particle signals in the one or more EMS channels;
- fitting, using a distribution function, the calculated zeroth order singly-charged particle size distribution to obtain a fit function value;
- correcting, using the obtained fit function value, for multiply-charged particle contribution to the received EMS data;
- and
- providing an output to a user comprising the fit and corrected particle size distribution.
A system configured to determine particle size distribution from electrical mobility spectrometry (EMS) measurements in the presence of multiply charged particles, the system comprising:
- an electrical mobility spectrometer configured to obtain EMS data, wherein the received EMS data comprises a particle signal for one or more EMS channels;
- a processor configured to:
- calculate a zeroth order singly-charged particle size distribution from the particle signals in the one or more EMS channels;
- fit, using a distribution function, the calculated zeroth order singly-charged particle size distribution to obtain a fit function value;
- and
- correct, using the obtained fit function value, for multiply-charged particle contribution to the received EMS data;
- and
- provide an output to a user comprising the fit and corrected particle size distribution.
Dependencies are inferred from the claim text.