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- Title
Assessing the Effects of Acidification on N Dynamics in Jiyun River System of Tianjin, China.
- Authors
Xue, Dongmei; Yang, Mengfan; Wang, Zhong-Liang
- Abstract
Alterations in pH have significant effects on nitrification and denitrification processes in aquatic systems. The Jiyun River in northern China experiences significant acid precipitation, and as such was selected to investigate the effects of decreasing pH (river pH at 8.2, pH at 6 and 5) on N dynamics via incubation experiments (35 and 10°C). Statistical results indicated that the NO concentrations of the control (pH at 8.2) were either significantly lower (at 35°C) or significantly higher (at 10°C) than the treatments of pH at 6 and 5 at the alpha level of 0.05 in the incubation. However, the NO concentrations of the two pH treatments showed significant difference during part of the reaction stage at 35°C and no difference at 10°C. Analysis indicated that nitrification and coupled nitrification-aerobic denitrification occurred for all treatments, which resulted in NO being either accumulated or removed at the end of the incubation.
- Subjects
TIANJIN (China); CHINA; ACIDIFICATION; RIVERS; NITRIFICATION; DENITRIFICATION; NITRIC oxide; WATER chemistry
- Publication
Bulletin of Environmental Contamination & Toxicology, 2015, Vol 95, Issue 6, p822
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-015-1681-7