Monitoring Ambient Ozone with a Network of Passive Samplers: a Feasibility Study
Grosjean D, Williams EL, Grosjean E. 1995. Monitoring Ambient Ozone with a Network of Passive Samplers: a Feasibility Study. Environmental Pollution. 88:267-273
ABSTRACT: Ambient levels of ozone have been measured at 46 mountain forest, desert, Class I Wilderness areas and other remote locations using a network of passive samplers. Typical values were 40-80 ppb (2 week samples) and exhibited temporal variations (studied for up to 1 year) as well as changes with elevation (studied up to 10500 ft (3200 m) ). The performance of the passive sampler was evaluated with respect to reproducibility, field controls, data capture (>0.95), precision for co-located samples (av. = 11.9%, n = 103), and the role of other atmospheric oxidants as potential interferents (2 locations). Suggestions for additional sampler performance evaluation and network operation are outlined.