Rahul Zaveri

The Influence of Particle Phase State on the Growth Kinetics of Secondary Organic Aerosols

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

We propose to investigate the influences of particle phase state and possible phase separation on the growth kinetics of secondary organic aerosols (SOA) formed from oxidation of selected…

Secondary Organic Aerosol Formation from Nitrate Photochemistry

Lead Institution

University of California, Irvine

Principal Investigator

Barbara Finlayson-Pitts

Project type

Large-Scale EMSL Research

Secondary organic aerosols (SOA) in the troposphere are a major component of particulate matter and hence of interest with respect to health effects, visibility and radiative forcing. However, their…

Experimental and Modeling Studies on Reactive Mass Transfer Kinetics of Secondary Organic Aerosol Formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

The objectives of this project are to study the reactive mass transfer kinetics of secondary organic aerosol (SOA) formation at low, moderate, and high relative humidities. Through this EMSL-user…

Instrument Testing and Deployment for the DOE CHAPS Field Campaign

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Carl Berkowitz

Project type

Large-Scale EMSL Research

We are requesting support for EMSL participation in DOEs Cumulus Humilis Aerosol Plume Study, CHAPS. This campaign is being organized by DOEs Atmospheric Sciences Program (ASP) with support from NOAA…

Secondary Organic Aerosol Formation Mechanisms and Growth Dynamics

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

Recent theoretical and laboratory studies have revealed that the timescales of secondary organic aerosol (SOA) partitioning and the associated aerosol size distribution growth dynamics depend on the…

Theoretical Evaluation of Ion Funnel Focussing for Light Ions in a Drift Tube

Lead Institution

Washington State University

Principal Investigator

Bertram Jobson

Project type

Capability Research

The object of the project is to perform some ion trajectory simulations to evaluate the potential benefit of using an ion funnel to focus light ions in the Proton Transfer Reaction Mass Spectrometer …

Effect of Relative Humidity and Cloud Processing on Biogenic and Anthropogenically-Influenced Organic Aerosols - A Combined Laboratory and Modeling Approach

Lead Institution

University of California, Irvine

Principal Investigator

Sergey Nizkorodov

Project type

Large-Scale EMSL Research

Recent advances in understanding aerosol chemistry strongly suggest that atmospheric water vapor and liquid water have strong influence of the composition and properties of biogenic and anthropogenic…

SEM Analysis of Rotating Drum Impactor Filter strips for biological species

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

The samples to be analyzed are time-resolved filter samples taken as part of a DHS study on biologocal backgrounds at the SFP airport. These samples will be analyzed by SEM for times corresponding…

Trace Measurements of Organics Due to Pyrolysis of Jet Engine Turbine Oil.

Lead Institution

Boeing

Principal Investigator

Cheryl Bick

Project type

Exploratory Research

Determine the products of decomposition of jet engine oil combustion at different temperatures using a Proton Transfer Reaction Mass Spectrometer in a specialized Boeing test facility.

Analysis of Mixing States and Morphology of Individual Particles for Improved Representation in Atmospheric Models

Lead Institution

Sonoma Technology

Principal Investigator

Ryan Moffet

Project type

Large-Scale EMSL Research

Atmospheric aerosols affect the climate directly by absorbing and scattering radiation and indirectly by impacting the properties and lifetimes of clouds. Aerosol processes, such as wet removal,…

Environmental Effects of Aircraft Engine Exhaust Particles (A. Laskin's DOD-ILA, PNNL Scope #49510)

Lead Institution

Battelle Columbus

Principal Investigator

Chester Spicer

Project type

Exploratory Research

The environmental effects of aircraft engine exhaust particles have recently gained increasing attention primarily focused on their vital role in influencing the upper troposphere - lower…

Hygroscopic Properties of Aerosol Organics

Lead Institution

Desert Research Institute

Principal Investigator

Douglas Lowenthal

Project type

Large-Scale EMSL Research

While organics constitute a large fraction of ambient aerosol mass, their role and effect on particle hygroscopic growth and cloud nucleation remains unclear. Organics are most often present in…

Atmospheric Soil Organic Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Recent discovery of atmospheric soil organic particles (ASOP), emitted through previously unrecognized atmosphere-land-surface interactions, suggests that ASOP may have a widespread impact over a…

Chemistry and Microphysics of the Small Particles (Zelenyuk's BES-Particles, PNNL Scope #47327)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Alla Zelenyuk-Imre

Project type

Exploratory Research

Nanoparticles play an important role in many areas. The unique properties of matter on the nanometer size range are a new frontier in science and technology with the potential to revolutionize our…

Integrated Experimental and Modeling Studies on Aerosol Evolution and Aging

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

The objectives of this project are to characterize the time evolution of aerosol size, density, composition, and mixing state in an aerosol chamber, and b) link experiments to the development and…

Mapping the Role of Semivolatile Organics in Aerosol Growth Dynamics

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

Recent theoretical and laboratory studies have revealed that the timescales of secondary organic aerosol (SOA) partitioning and the associated aerosol growth kinetics depend on the complex interplay…

PTR-ITMS: Next Generation Aircraft Instrumentation (Alexander's ASP, PNNL Scope #47789)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Develop and demonstrate prototype system: Proton Transfer Reaction Ion Trap Mass Spectrometer (PTR-ITMS): Next Generation Aircraft Instrumentation for Gas Phase Organic Analysis

Innovative Aerosol Collector (Alexander's SBIR, PNNL Scope #48595)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

This proposal is a continuation of research under EMSL User Proposal #18198. Develop an innovative aerosol collector for on-line analysis of individual particulate species using Proton Transfer…

Atmospheric Soil Organic Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Recent discovery of atmospheric soil organic particles (ASOP), emitted through previously unrecognized atmosphere-land-surface interactions, suggests that ASOP may have a widespread impact over a…

Innovative Aerosol Collector (Alexander's SBIR, PNNL Scope #48595)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

Develop an innovative aerosol collector for on-line analysis of individual particulate species using Proton Transfer Reaction Ion Trap Mass Spectrometer (PTR-ITMS).

Assessment of TRI Chemical Emisson Factors from Munitions by Real-Time Mass Spectrometric Air Monitoring

Lead Institution

Battelle Columbus

Principal Investigator

Chester Spicer

Project type

Exploratory Research

This will be a component of a larger Battelle project involving application of six different measurement methods to identify and measure emission factors for a large number of Toxic Release Inventory…

Understanding the Roles of Phase State and Phase Separation in the Growth of Secondary Organic Aerosols

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

We propose to investigate the fundamental roles of phase state and phase separation in the growth of secondary organic aerosols (SOA) formed from oxidation of selected volatile organic compounds (in…

(GC9)Simulation of Climate Forcing by Aerosols

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Steven Ghan

Project type

Capability Research

The largest source of uncertainty in estimates of the radiative forcing governing climate change is in the radiative forcing due to anthropogenic aerosols. Current estimates of the global mean of…

Microsampling Isotope Ratio Mass Spectrometer Development

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Helen Kreuzer

Project type

Exploratory Research

We are using a combination of laser ablation, catalytic reactor technology, and systems engineering to develop a novel device that converts the O and H in solid organic samples to CO and H2,…

Development and Testing of a New Ion Trap Assembly (Summer Research Institute, PNNL Scope #16248)

Lead Institution

University of Delaware

Principal Investigator

Julie Lloyd

Project type

Exploratory Research

This summer I will be conducting research at Pacific Northwest National Laboratory (PNNL) in connection with the Interfacial and Condensed Phase Chemical Physics Summer Research Institute, which will…

Laboratory Measurements of Secondary Organic Aerosol Formation from Semi-Volatile Organic Compounds

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

We are proposing to collaborate with EMSL staff member M. Lizabeth Alexander in using the EMSL proton transfer reaction mass spectrometer (PTR-MS) and High Resolution Aerosol Time-of-Flight Mass…

(EMSL21) Computational Methods for Atmospheric Chemistry

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Carl Berkowitz

Project type

Capability Research

With the advent and ease of accessibility to massively parallel computing architecture has come a corresponding need for programming techniques tailored to Eulerian air chemistry models. These…

Synthesis and Analysis of Organic Hydroperoxide by PTR-MS

Lead Institution

National Center for Atmospheric Research

Principal Investigator

Thomas Karl

Project type

Exploratory Research

The aim of this proposal is to synthesize a few select organic hydroperoxides relevant to atmospheric chemistry and to measure them in the gas phase by Proton Transfer Reaction Mass Spectrometry…

The Formation and Structure of Tropical Organic/Water Aerosols

Lead Institution

University of Colorado at Boulder

Principal Investigator

Gayfree Ellison

Project type

Large-Scale EMSL Research

Atmospheric aerosols are widely recognized as key elements in many environmental issues ranging from global climate change and visibility to adverse effects on peoples health. Aerosols affect climate…

Membrane Introduction Proton Transfer Reaction Mass Spectrometry

Lead Institution

University of Innsbruck

Principal Investigator

Elena Boscaini

Project type

Exploratory Research

We will be using the EMSL PTR-MS to study the interaction of a range of volatile organic compounds with several types of polymer membranes.

Development of Novel Microchip CE-MS Platform for Organic Aerosol Characterization

Lead Institution

Oak Ridge National Laboratory

Principal Investigator

Xiao-Ying Yu

Project type

Large-Scale EMSL Research

Atmospheric particulate matter (PM) has significant impact on global climate, visibility, and human health. Although organic compounds typically constitute 10-70% of the total dry fine particle mass,…

Mexico City Municipal Area Air pollution Study, 2003

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

This study is part of a larger international monitoring effort, to take place for 6 weeks, in and near Mexico City. The project is to examine air pollution factors, including particulates and trace…

Integrated Experimental and Modeling Studies on Secondary Organic Aerosol Formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

The objectives of this project are to: a) simultaneously characterize the time evolution of hydrocarbon precursor gases as well as the chemical and physical properties of secondary organic aerosols …

Deployment of EMSL Instruments during the 2010 Carbonaceous Aerosol and Radiative Effects Study (CARES)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

The Carbonaceous Aerosol and Radiative Effects Study (CARES) will be conducted during summer 2010 in order to investigate the evolution of carbonaceous aerosols of different types and their optical…

Characterization of Organic Aerosols throughout the Depth of an Urban Planetary Boundary Layer: proposed field deployment of EMSL mass spectrometers

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Carl Berkowitz

Project type

Large-Scale EMSL Research

We are requesting EMSL support to deploy a PTR-MS and several aerosol mass spectrometers at the ~150, ~450 and ~850 AGL levels of a 900 ft skyscraper as part of a larger scientific program to study…

Real Time Trace Gas Measurements by Chemical Ionization Mass Spectrometry

Lead Institution

Washington State University

Principal Investigator

Bertram Jobson

Project type

Exploratory Research

Develop and applying proton transfer reaction mass spectrometry for the real time analysis of hydrocarbons in air and on particulate matter. This technique will be evaluated for suitability for…

Secondary Organic Aerosol Formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

We propose to simultaneously characterize the time evolution of hydrocarbon precursor gases as well as the chemical and physical properties of secondary organic aerosols (SOA) using an existing 8-m3…

Investigation of Secondary Organic Aerosol and Black Carbon Aging during the 2010 Carbonaceous Aerosol and Radiative Effects Study (CARES)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Exploratory Research

Carbonaceous aerosols play a major role in the direct and indirect radiative forcing of climate. However, several mechanistic uncertainties and knowledge gaps still exist in our understanding of…

Projects