Abstract
Preliminary measurements of ionic concentrations in cloudwater collected at the highest mountain in Hong Kong show that the pH can be as low as 3.4, which is lower than that of rainwater collected in urban-residential Hong Kong. Sulfate is the most abundant anion, and hydrogen or ammonium ions are the most abundant cations in the cloudwater samples. Results are also presented for analyte concentrations in sequential samples taken during a rain event from a maritime airmass. The concentrations of sea salt species were high and exhibited an exponential decrease with concentration at the start of the event. The concentrations of other species also decreased to fairly constant, low values after ∼10 mm rainfall. The fitting of the concentration-rainfall plots enabled in-cloud and below-cloud mechanisms of incorporation of the species to be distinguished. © CSIRO 2006.
| Original language | English |
|---|---|
| Pages (from-to) | 142-148 |
| Journal | Environmental Chemistry |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2006 |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.Funding
We acknowledge financial support for this work under City University DAG Grant 7100029.
Research Keywords
- Atmospheric chemistry
- China
- Eloudwater
- Scavenging
- Sequential samples
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