DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Volatility-resolved chemical characterization of airborne particles

Abstract

A method and apparatus for evaluating the chemical composition of airborne particles by sequentially collecting and analyzing airborne particles in-situ. The method includes: collecting particles; enlarging the particles through water condensation; accelerating the enlarged particles onto a surface to collect enlarged particles; and analyzing the enlarged particles by: isolating the surface; passing a carrier gas over the surface; heating the surface to thermally desorb collected particles into the carrier gas; transporting this evolved vapor into detectors; and assaying the evolved vapor as a function of a desorption temperature. The apparatus includes: a sample flow inlet; a condensational growth tube; a collection and thermal desorption (CTD) cell; a carrier gas source; a heater coupled to the CTD; one or more gas detectors; and a controller configured to operate valves, the heater, the growth tube, and the CTD cell in at least an in-situ sequential collection mode and analysis mode.

Inventors:
; ;
Issue Date:
Research Org.:
Aerosol Dynamics, Inc., Berkeley, CA (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Office of SBIR/STTR Programs (SBIR/STTR)
OSTI Identifier:
2222208
Patent Number(s):
11733148
Application Number:
16/775,033
Assignee:
Aerosol Dynamics Inc. (Berkeley, CA); Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
DOE Contract Number:  
SC0018462
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/28/2020
Country of Publication:
United States
Language:
English

Citation Formats

Isaacman-VanWertz, Gabriel, Kreisberg, Nathan M., and Hering, Susanne V. Volatility-resolved chemical characterization of airborne particles. United States: N. p., 2023. Web.
Isaacman-VanWertz, Gabriel, Kreisberg, Nathan M., & Hering, Susanne V. Volatility-resolved chemical characterization of airborne particles. United States.
Isaacman-VanWertz, Gabriel, Kreisberg, Nathan M., and Hering, Susanne V. Tue . "Volatility-resolved chemical characterization of airborne particles". United States. https://www.osti.gov/servlets/purl/2222208.
@article{osti_2222208,
title = {Volatility-resolved chemical characterization of airborne particles},
author = {Isaacman-VanWertz, Gabriel and Kreisberg, Nathan M. and Hering, Susanne V.},
abstractNote = {A method and apparatus for evaluating the chemical composition of airborne particles by sequentially collecting and analyzing airborne particles in-situ. The method includes: collecting particles; enlarging the particles through water condensation; accelerating the enlarged particles onto a surface to collect enlarged particles; and analyzing the enlarged particles by: isolating the surface; passing a carrier gas over the surface; heating the surface to thermally desorb collected particles into the carrier gas; transporting this evolved vapor into detectors; and assaying the evolved vapor as a function of a desorption temperature. The apparatus includes: a sample flow inlet; a condensational growth tube; a collection and thermal desorption (CTD) cell; a carrier gas source; a heater coupled to the CTD; one or more gas detectors; and a controller configured to operate valves, the heater, the growth tube, and the CTD cell in at least an in-situ sequential collection mode and analysis mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {8}
}

Works referenced in this record:

Continuous, laminar flow water-based particle condensation device and method
patent, March 2004


Apparatus for rapid measurement of aerosol bulk chemical composition
patent, April 2006


An In Situ, Time-Resolved Analyzer for Aerosol Organic and Elemental Carbon
journal, January 1990


Calculation of Flame Ionization Detector Relative Response Factors Using the Effective Carbon Number Concept
journal, August 1985


Advanced laminar flow water condensation technology for ultrafine particles
patent, November 2017


On-line gas chromatographic analysis of airborne particles
patent, January 2012


Analysis of migration of a volatile substance during heating with microwave energy
patent, January 1993


A Particle-into-Liquid Collector for Rapid Measurement of Aerosol Bulk Chemical Composition
journal, January 2001


Field-Deployable, High-Resolution, Time-of-Flight Aerosol Mass Spectrometer
journal, December 2006


Focusing particle concentrator with application to ultrafine particles
patent, June 2013


Wick wetting for water condensation systems
patent, April 2017


High saturation ratio water condensation device and method
patent, June 2010


System and method for the concentrated collection of airborne particles
patent, May 2017


An In-Situ Instrument for Speciated Organic Composition of Atmospheric Aerosols: T hermal Desorption A erosol G C/MS-FID (TAG)
journal, June 2006


Integrated collection and vaporization particle chemistry monitoring
patent, November 1999


Aspects of the mechanism of the flame ionization detector
journal, May 1999


A two-dimensional volatility basis set: 1. organic-aerosol mixing thermodynamics
journal, January 2011


Climate Change 2013 – The Physical Science Basis
book, March 2014


Diesel particulate monitor
patent, May 1992


Sustained super-saturations for condensational growth of particles
patent, April 2019


Advanced laminar flow water condensation technology for ultrafine particles
patent, August 2014


Method and apparatus for identifying and analyzing vapor elements
patent, October 1999


The formation, properties and impact of secondary organic aerosol: current and emerging issues
journal, January 2009