Photochemincal processes involving nitrite in surface water samples
| العنوان: | Photochemincal processes involving nitrite in surface water samples |
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| المؤلفون: | Gianpaolo Falletti, Claudio Minero, Maria Eugenia Carlotti, Davide Vione, Ezio Pelizzetti, Valter Maurino, Serge Chiron, Roberto Ajassa |
| المصدر: | Aquatic Sciences. 69:71-85 |
| بيانات النشر: | Springer Science and Business Media LLC, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Ecology, Inorganic chemistry, Aquatic Science, chemistry.chemical_compound, chemistry, Nitrate, Environmental chemistry, Nitration, Dissolved organic carbon, Nitrogen dioxide, Hydroxyl radical, Nitrite, Photodegradation, Surface water, Ecology, Evolution, Behavior and Systematics, Water Science and Technology |
| الوصف: | A study into nitrite photochemistry was carried out on surface (both lake and river) water samples. In the tested samples, nitrite photolysis accounted for 0–60 % of .OH photoproduction, nitrate for 0–40 %, and dissolved organic matter (DOM) photochemistry played on average the main role. In real surface waters, an effect of radiation extinction by the water column would also be observed, and is expected to inhibit nitrate photochemistry at a higher extent compared to nitrite or DOM. Nitrite showed a definite time evolution with irradiation. Photodegradation prevailed in samples with the highest initial concentrations, while photogeneration with DOM transformation was evident in the presence of undetectable initial nitrite levels. Nitrite also accounted for up to 9 % of .OH scavenging, which would produce up to 66 % of photoformed nitrogen dioxide. The remaining percentage of nitrogen dioxide generation is accounted for by nitrate photolysis. Photogenerated nitrogen dioxide could then be involved in significant processes of aromatic nitration, in particular in the transformation of phenol into nitrophenols. |
| تدمد: | 1420-9055 1015-1621 |
| DOI: | 10.1007/s00027-007-0881-6 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::257f5ab069e93a18ddaa7c9d6cba122e https://doi.org/10.1007/s00027-007-0881-6 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........257f5ab069e93a18ddaa7c9d6cba122e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14209055 10151621 |
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| DOI: | 10.1007/s00027-007-0881-6 |