The annular denuder system (ADS) was used to characterize seasonal variations of acidic
air pollutants in Seoul, South Korea. Fifty-four 24h samples were collected over four seasons …

The annular denuder system (ADS) was used to determine quantitatively the relationship
between indoor and outdoor air. All indoor and outdoor measurements were done …

During the period from June 1994 to May 1995 a three-line annular denuder filter system
was used to sample atmospheric gas phase SO2, HNO3, HNO2, HCl, and NH3 and aerosol …

Ambient measurements were made using two sets of annular denuder system during the
four seasons (April 2001 to February 2002) and were then compared with the results during …

Very high PM2. 5 concentrations have been observed, which were classified as hazy
episodes, on several days in the fall of 2001 in the Seoul metropolitan area. It was the worst …

This study considers the characteristics of carbon monoxide (CO), nitrogen dioxide (NO2),
ozone (O3) and sulfur dioxide (SO2) in two major South Korean cities, including the capital …

Atmospheric concentrations of gaseous HNO3, NH3 and particulates NO3− and SO42−
were analyzed at three sites, Chunchon, Seoul and Anmyon-do, on the Korean peninsula by …

The cyclone/annular denuder/filter pack sampling system (ADS) was used to collect and
evaluate ambient air pollutants in Chicago. Eighty-one 12-h samples, equally divided into …

One hundred ninety-five chemically speciated samples were collected from March 2003 to
February 2005 in the Seoul Metropolitan area to investigate the characteristics of the major …

A detailed description of an interactive relationship is made between water-soluble ionic
components in PM 2.5 and their precursor gases using the hourly resolution data measured …