Authors: Hering, Susanne; Kreisberg, Nathan; Stolzenburg, Mark; Lewis, Gregory

Source: Aerosol Science and Technology, Volume 41, Number 1, January 2007 , pp. 86-96(11)

Publisher: Taylor and Francis Ltd

Abstract:

As part of the California Regional PM2.5 and PM10 Air Quality Study (CRPAQS) particle size distributions were measured simultaneously at two sites; the city of Fresno and the agricultural site of Angiola. Reported here are data obtained by scanning mobility analysis over the size range from 10 nm to 400 nm for the intensive study period from December 1, 2000 through February 6, 2001. These high time resolution data show variability in the character of the distributions, as well as the in the total number concentrations. The most pronounced feature of the data set is a consistent, nighttime maxima in particle number concentrations with a modal diameter near 80 nm during the evening hours at the urban Fresno site. Although these maxima are correlated with CO, NO, and black carbon, the particle size is larger than the 30-40 nm modal diameters observed for traffic aerosols during the commute hours, and is attributed to a non-vehicle source. At the agricultural site, the morning maxima particle number concentration coincides with the maxima in NO concentration, but often precedes the morning maxima in black carbon. Values for the geometric mean particle diameter varied from day to day, but are correlated between the two sites, with somewhat larger particle sizes at Angiola during periods of stagnation.

Articles that cite this article?

Document Type: Research article

DOI: http://dx.doi.org/10.1080/02786820601113290

Affiliations: 1: Aerosol Dynamics Inc., Berkeley, California, USA

Publication date: 2007-01-01

More about this publication?

• Information for Authors
• Subscribe to this Title
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Chemical Engineering
• By this author: Hering, Susanne ;  Kreisberg, Nathan ;  Stolzenburg, Mark ;  Lewis, Gregory

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers