Alexander Laskin

Aerosol properties and processes in remote marine environment

Lead Institution

Washington University in St. Louis

Principal Investigator

Jian Wang

Project type

Large-Scale EMSL Research

With their extensive coverage, low clouds greatly impact global climate. Presently, low clouds are poorly represented in global climate models (GCMs), and the response of low clouds to changes in…

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…

Kinetic Study of Heterogeneous Reaction of Soot with Reactive Oxidants

Lead Institution

Stanford University

Principal Investigator

Hai Wang

Project type

Large-Scale EMSL Research

Heterogeneous reactions occurring between aerosol particles and reactive gaseous species in the atmosphere have significant impacts on atmospheric composition and chemistry, global radiative forcing,…

Kinetic study of heterogeneous reaction of palladium nanoparticles with O2 and OH

Lead Institution

Stanford University

Principal Investigator

Hai Wang

Project type

Large-Scale EMSL Research

The proposed research will examine the reaction kinetics and mechanism of palladium nanoparticle oxidation in molecular oxygen and by the hydroxyl radical. We will use the substrate deposited…

Molecular Level Analysis of Photochemical Processing of Brown Carbon and Nitrogen Compounds in Atmospheric Aerosols

Lead Institution

University of California, Irvine

Principal Investigator

Sergey Nizkorodov

Project type

Large-Scale EMSL Research

Atmospheric aerosols have a profound effect on climate by scattering and absorbing solar and Earth radiation. They can be predominantly scattering (e.g., sea-salt aerosol), predominantly absorbing (e…

Chemical Imaging and Molecular Characterization of Primary Biological Particles.

Lead Institution

University of California, Irvine

Principal Investigator

Alex Guenther

Project type

Large-Scale EMSL Research

The objective of the proposed project is to conduct in-depth studies of Primary Biological Aerosol Particles (PBAP) for predictive understanding of their environmental impact. The ultimate goal is to…

Oxidation of atmospheric organic particulate matter

Lead Institution

University of British Columbia

Principal Investigator

Allan Bertram

Project type

Exploratory Research

Organic particulate matter is abundant throughout the atmosphere. These organic particles may contribute significantly to the radiative forcing, thus, changing the Earth's climate. Additionally,…

Heterogeneous Uptake of HNO3 on CaCO3: Determination of the Gas-Particle Reaction Probability as Function of Relative Humidity

Lead Institution

University of Iowa

Principal Investigator

Vicki Grassian

Project type

Large-Scale EMSL Research

The proposed work will provide an accurate measurement of the heterogeneous reaction probability for HNO3 on CaCO3 and its dependence on relative humidity. The value of &#947;HNO3 (uptake…

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…

Chemical Imaging Studies of Liquid-Liquid Phase Separation in Atmospheric Aerosols

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Mary Gilles

Project type

Large-Scale EMSL Research

A large fraction of atmospheric aerosols contain an internal mixture of organics and inorganic salts. As the relative humidity (RH) cycles in the atmosphere, these particles can undergo phase…

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…

Automated Analysis of Field-Collected Aerosols

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

We have developed a field portable instrument for automated collection of particles on a time-resolved basis. Essential to this project is having access to automated particle analysis. This…

Impact of Reactive Halogen Species on the Air Quality in Southern California Coastal Areas

Lead Institution

Washington State University

Principal Investigator

Bertram Jobson

Project type

Large-Scale EMSL Research

Air pollution in coastal urban centers remains one of the most serious environmental challenges in the State of California, and further efforts to improve air quality are a priority. Mitigation…

Development of Novel Approaches for Analysis of Secondary Organic Aerosols
Using High-Resolution Mass Spectrometry.

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

The objective of the proposed research is to develop new approaches for advanced detailed characterization of the chemical composition of organic aerosols (OA) that will enable a fundamental…

Ice Nucleation Properties of Authentic Atmospheric Marine Particles

Lead Institution

Sonoma Technology

Principal Investigator

Ryan Moffet

Project type

Large-Scale EMSL Research

The effect that aerosol particles have on climate is highly uncertain and has garnered much attention in recent years. Specifically, the effect that aerosol particles have on cloud formation is one…

Plant Stress in a Changing Environment: Using Plant Metabolomics to Improve Predictions of Biogenic Secondary Organic Aerosol Production

Lead Institution

University of California, Irvine

Principal Investigator

Celia Faiola

Project type

Large-Scale EMSL Research

This research addresses a critical barrier in our understanding of the processes controlling biogenic secondary organic aerosol formation (SOA), and how they are evolving in a changing environment…

Aerosol Aging and Climate Change (Cowin's NOAA, PNNL Scope #47840)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

Using easily field-deployable, time-resolved aerosol collectors (TRAC and TAQ) create sample archives that permit quantitative, single particle-size and elemental-composition analysis of mixed…

Analysis of Organic Oligomers Forming Secondary Aerosol from Wood Combustion-Derived Phenols

Lead Institution

University of California, Davis

Principal Investigator

Cort Anastasio

Project type

Large-Scale EMSL Research

Aqueous reactions of phenols will be studied in the laboratory using well defined solutions over a range of conditions (e.g., phenol mixture, oxidant and pH) as surrogates for atmospheric drops. The…

In-Situ Monitoring Electrode Surface Reactions Using High-Resolution Desorption Electrospray Ionization Mass Spectrometry (DESI-MS)

Lead Institution

Ohio University

Principal Investigator

Hao Chen

Project type

Large-Scale EMSL Research

Probing the real-time chemical processes on the electrode surfaces is crucial for obtaining fundamental understanding of redox mechanisms and the nature of active intermediates involved in…

Fundamental Studies of Ice Nucleation Using Environmental Scanning Electron Microscope (ESEM)

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

The proposed research is to demonstrate applicability of a novel experimental platform for systematic studies of ice nucleation efficiency of atmospheric particles with determination of…

Understanding Reactive Nitrogen Recycling on Soil and Mineral Dust Surfaces

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Large-Scale EMSL Research

A fundamental understanding of the factors controlling the lifetime and fate of reactive nitrogen oxides (NOy = NO, NO2, HNO2, N2O5, etc.) in the atmosphere is critical for accurately representing…

In Situ Probe of Oxidation at Environmental Interfaces (Cowin's LDRD, PNNL Scope #48767)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

Provide/greatly-enhance the ability to apply powerful vacuum based analytical techniques to real time studies of the reaction of surfaces and particles to reactive and damp gases.

The Role of Ice and Aerosol Surfaces in Halogen Activation in the Arctic Springtime Boundary Layer

Lead Institution

University of Alaska Fairbanks

Principal Investigator

William Simpson

Project type

Large-Scale EMSL Research

The UAF research group of Prof. Simpson is performing an intensive field campaign in Barrow, Alaska during March 2007. The goal of this field campaign is to quantify the amounts of reactive bromine …

Surface-Induced Dissociation of Complex Ions on an LTQ/Orbitrap Mass Spectrometer

Lead Institution

Purdue University

Principal Investigator

Julia Laskin

Project type

Large-Scale EMSL Research

Mass spectrometry is unique among instrumental analysis techniques in terms of its extraordinary sensitivity, molecular specificity and utility for addressing key questions in a broad range of…

A Systematic Investigation of the Effect of Ammonia on Scattering and Absorption of Solar Radiation by Secondary Organic Aerosols

Lead Institution

University of California, Davis

Principal Investigator

Christopher Cappa

Project type

Large-Scale EMSL Research

Atmospheric aerosols have a profound effect on climate by scattering and absorbing solar and terrestrial radiation. They can be predominantly scattering (e.g., sea-salt aerosol), predominantly…

Chemical Imaging of Airborne Soil Organic Particles from Land-atmosphere Interactions

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

Recent discovery of solid (glassy) atmospheric soil organic particles (ASOP), emitted through atmosphere-land-surface interactions in the area of Southern Great Plains (SGP) suggests that ASOP may…

EMSL Science Overview

Alexander Laskin

Projects

Aerosol properties and processes in remote marine environment

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

Kinetic Study of Heterogeneous Reaction of Soot with Reactive Oxidants

Kinetic study of heterogeneous reaction of palladium nanoparticles with O2 and OH

Molecular Level Analysis of Photochemical Processing of Brown Carbon and Nitrogen Compounds in Atmospheric Aerosols

Chemical Imaging and Molecular Characterization of Primary Biological Particles.

Oxidation of atmospheric organic particulate matter

Heterogeneous Uptake of HNO3 on CaCO3: Determination of the Gas-Particle Reaction Probability as Function of Relative Humidity

Mexico City Municipal Area Air pollution Study, 2003

Chemical Imaging Studies of Liquid-Liquid Phase Separation in Atmospheric Aerosols

Atmospheric Soil Organic Particles

Automated Analysis of Field-Collected Aerosols

Impact of Reactive Halogen Species on the Air Quality in Southern California Coastal Areas

Development of Novel Approaches for Analysis of Secondary Organic Aerosols
Using High-Resolution Mass Spectrometry.

Ice Nucleation Properties of Authentic Atmospheric Marine Particles

Plant Stress in a Changing Environment: Using Plant Metabolomics to Improve Predictions of Biogenic Secondary Organic Aerosol Production

Aerosol Aging and Climate Change (Cowin's NOAA, PNNL Scope #47840)

Analysis of Organic Oligomers Forming Secondary Aerosol from Wood Combustion-Derived Phenols

In-Situ Monitoring Electrode Surface Reactions Using High-Resolution Desorption Electrospray Ionization Mass Spectrometry (DESI-MS)

Fundamental Studies of Ice Nucleation Using Environmental Scanning Electron Microscope (ESEM)

Understanding Reactive Nitrogen Recycling on Soil and Mineral Dust Surfaces

In Situ Probe of Oxidation at Environmental Interfaces (Cowin's LDRD, PNNL Scope #48767)

The Role of Ice and Aerosol Surfaces in Halogen Activation in the Arctic Springtime Boundary Layer

Surface-Induced Dissociation of Complex Ions on an LTQ/Orbitrap Mass Spectrometer

A Systematic Investigation of the Effect of Ammonia on Scattering and Absorption of Solar Radiation by Secondary Organic Aerosols

Chemical Imaging of Airborne Soil Organic Particles from Land-atmosphere Interactions