Journal
JOURNAL OF TOXICOLOGY
Volume 2011, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2011/419476
Keywords
-
Categories
Funding
- United States Environmental Protection Agency (EPA) through Science to Achieve Results (STAR) [RD83107801]
- Syracuse Center of Excellence CARTI Project Award
- U.S. Environmental Protection Agency [X-83232501-0]
- Electric Power Research Institute [W06325]
- New York State Energy Research and Development Authority (NYSERDA) [8650, 10604]
- EPA
Ask authors/readers for more resources
In this study, various laboratory and field tests were performed to develop an effective automated particle-bound ROS sampling-analysis system. The system uses 2' 7' -dichlorofluorescin ( DCFH) fluorescence method as a nonspecific, general indicator of the particle-bound ROS. A sharp-cut cyclone and a particle-into-liquid sampler (PILS) were used to collect PM2.5 atmospheric particles into slurry produced by a DCFH-HRP solution. The laboratory results show that the DCFH and H2O2 standard solutions could be kept at room temperature for at least three and eight days, respectively. The field test in Rochester, NY, shows that the average ROS concentration was 8.3 +/- 2.2 nmol of equivalent H2O2 m-3 of air. The ROS concentrations were observed to be greater after foggy conditions. This study demonstrates the first practical automated sampling-analysis system to measure this ambient particle component.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available