Browsing Duke Faculty Scholarship by Author "0312531"

Now showing items 1-11 of 11

Ambient aerosol size distributions and number concentrations measured during the Pittsburgh Air Quality Study (PAQS)

Stanier, CO; Khlystov, Andrey; Pandis, SN (2004)

Twelve months of aerosol size distributions from 3 to 560 nm, measured using scanning mobility particle sizers are presented with an emphasis on average number, surface, and volume distributions, and seasonal and diurnal ...
A method for the in situ measurement of fine aerosol water content of ambient aerosols: The dry-ambient aerosol size spectrometer (DAASS)

Stanier, CO; Khlystov, Andrey; Chan, WR; Mandiro, M; Pandis, SN (2004)

Hygroscopic growth of atmospheric particles affects a number of environmentally important aerosol properties. Due to the hysteresis exhibited by the aerosol hygroscopic growth, the physical state of particles and the amount ...
An approach to monitor the fraction of elemental carbon in the ultrafine aerosol

ten Brink, H; Hoek, G; Khlystov, Andrey (2005)

Attempts were made to measure the fraction of elemental carbon (EC) in ultrafine aerosol by modifying an Ambient Carbonaceous Particulate Monitor (ACPM, R\&P 5400). The main modification consisted in placing a quartz filter ...
Chemical composition and aerosol size distribution of the middle mountain range in the Nepal Himalayas during the 2009 pre-monsoon season

Shrestha, Prabhakar; Barros, Ana; Khlystov, Andrei (COPERNICUS GESELLSCHAFT MBH, 2010)

Aerosol particle number size distribution and chemical composition were measured at two low altitude sites, one urban and one relatively pristine valley, in Central Nepal during the 2009 pre-monsoon season (May-June). This ...
Effect of peak inert-mode temperature on elemental carbon measured using thermal-optical analysis

Subramanian, R; Khlystov, Andrey; Robinson, AL (2006)

Thermal-optical analysis is a conventional method for classifying carbonaceous aerosols as organic carbon (OC) and elemental carbon (EC). This article examines the effects of three different temperature protocols on the ...
Nucleation events during the Pittsburgh air quality study: Description and relation to key meteorological, gas phase, and aerosol parameters

Stanier, CO; Khlystov, Andrey; Pandis, SN (2004)

During the Pittsburgh Air Quality Study (PAQS) aerosol size distributions between 3 nm and 680 nm were measured between July 2001 and June 2002. These distributions have been analyzed to assess the importance of nucleation ...
Organic nitrogen in PM2.5 aerosol at a forest site in the Southeast US

Lin, M.; Khlystov, Andrei (COPERNICUS GESELLSCHAFT MBH, 2010)

There is growing evidence that organo-nitrogen compounds may constitute a significant fraction of the aerosol nitrogen (N) budget. However, very little is known about the abundance and origin of this aerosol fraction. In ...
Pittsburgh air quality study overview

Wittig, AE; Anderson, N; Khlystov, Andrey; Pandis, SN; Davidson, C; Robinson, AL (2004)

Ambient sampling for the Pittsburgh Air Quality Study (PAQS) was conducted from July 2001 to September 2002. The study was designed (1) to characterize particulate matter (PM) by examination of size, surface area, and ...
Positive and negative artifacts in particulate organic carbon measurements with denuded and undenuded sampler configurations

Subramanian, R; Khlystov, Andrey; Cabada, JC; Robinson, AL (2004)

Measurement of ambient particulate organic carbon (POC) with quartz filters is prone to positive and negative sampling artifacts. One approach for estimating these artifacts is to sample with a backup quartz filter placed ...
Semi-continuous PM2.5 inorganic composition measurements during the Pittsburgh air quality study

Wittig, AE; Takahama, S; Khlystov, Andrey; Pandis, SN; Hering, S; Kirby, B; Davidson, C (2004)

A method for semi-continuous (10 min time resolution) PM2.5 nitrate and sulfate measurements, based on the humidified impaction with flash volatilization design of Stolzenburg and Hering (Environ. Sci. Technol. 34 (2000) ...
Variability of particulate matter concentrations along roads and motorways determined by a moving measurement unit

Weijers, EP; Khlystov, Andrey; Kos, GPA; Erisman, JW (2004)

The spatial variability of aerosol number and mass along roads was determined in different regions (urban, rural and coastal-marine) of the Netherlands. A condensation particle counter (CPC) and an optical aerosol spectrometer ...