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Nitric Acid Uptake and Decomposition on Black Carbon (Soot) Surfaces: Its Implications for the Upper Troposphere and Lower Stratosphere
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choi, Wonyong Leu, Ming-Taun |
| Copyright Year | 1998 |
| Abstract | The uptake and decomposition of HNO3 on black carbon (soot) surfaces were investigated in order to evaluate the proposal that HNO3 decomposition on aircraft-generated soot aerosols may alter the NOx/NOy partitioning in the upper troposphere and lower stratosphere. The experimental measurements were performed by using a fast flow-tube reactor coupled to a quadrupole mass spectrometer. Black carbon samples used as surrogate material for aircraft soot in this study included Degussa FW2 (an amorphous carbon black comprising medium oxides), graphite, hexane soot, and kerosene soot. The measurements of uptake were performed by varying P(HNO3) in the range of 5 × 10-7 to 5 × 10-4 Torr at 220 and 295 K. The results are summarized as follows. Significant HNO3 decomposition was observed on FW2 at 295 K with P(HNO3) ≥ 1 × 10-4 Torr, while it did not occur at 220 K. Similar HNO3 decomposition behavior on graphite was also observed under the condition of P(HNO3) ≥ 10-4 Torr and T = 295 K, although the extent of the de... |
| Starting Page | 7618 |
| Ending Page | 7630 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/jp981647x |
| Alternate Webpage(s) | https://trs.jpl.nasa.gov/bitstream/handle/2014/19078/98-0280.pdf;jsessionid=E6B649624880E79CDD7F649D97F6CAF4?sequence=1 |
| Alternate Webpage(s) | https://trs.jpl.nasa.gov/bitstream/handle/2014/19328/98-0652.pdf;jsessionid=6799445806DF0FBB794EE73D96867B61?sequence=1 |
| Alternate Webpage(s) | https://doi.org/10.1021/jp981647x |
| Volume Number | 102 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
