Field Testing of Activated Carbon Mixing and In Situ Stabilization of PCBs in Sediment at Hunters Point Shipyard Parcel F, San Francisco Bay, California

2008 ◽  
Author(s):  
STANFORD UNIV CA
Keyword(s):  
Activated Carbon ◽  
San Francisco ◽  
San Francisco Bay ◽  
Field Testing ◽  
In Situ Stabilization

scholarly journals Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay

2004 ◽  
Vol 4 (5) ◽  
pp. 6645-6665
Author(s):  
E. C. Wood ◽  
T. H. Bertram ◽  
P. J. Wooldridge ◽  
R. C. Cohen
Keyword(s):  
Steady State ◽  
San Francisco ◽  
San Francisco Bay ◽  
Intermediate Compound ◽  
In Situ Measurements ◽  
Mixing Ratios

Abstract. We report in situ measurements of N2O5, NO2, and O3 in Contra Costa County, California during January 2004. Mixing ratios of N2O5, an intermediate compound in the atmosphere's nocturnal cleansing process, ranged up to 200 pmol/mol at night. The highest N2O5 concentrations were correlated with low O3 and high NO2 concentrations. The calculated steady state lifetime for N2O5 ranged from 5 to 30 min. The total HNO3 produced by N2O5 hydrolysis over a 14 h night was comparable to ambient NO2 concentrations, and is estimated to be a factor of nine bigger than the HNO3 produced during the day.

scholarly journals Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay

2005 ◽  
Vol 5 (2) ◽  
pp. 483-491 ◽  
Author(s):  
E. C. Wood ◽  
T. H. Bertram ◽  
P. J. Wooldridge ◽  
R. C. Cohen
Keyword(s):  
Steady State ◽  
San Francisco ◽  
San Francisco Bay ◽  
Intermediate Compound ◽  
In Situ Measurements ◽  
Mixing Ratios

Abstract. We report in situ measurements of N2O5, NO2, and O3 in Contra Costa County, California during January 2004. Mixing ratios of N2O5, an intermediate compound in the atmosphere's nocturnal cleansing process, ranged up to 200pmol/mol at night. The highest N2O5 concentrations were correlated with low O3 and high NO2 concentrations. The calculated steady state lifetime for N2O5 ranged from 5 to 30min. The total HNO3 produced by N2O5 hydrolysis over a 14h night was comparable to ambient NO2 concentrations, and is estimated to be a factor of nine bigger than the HNO3 produced during the day.

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