Adverse Effects of Ammonia on Nitrification Process: the Case of Chinese Shallow Freshwater Lakes
文献类型：期刊论文
| 作者 | Chen, Guoyuan1,2; Cao, Xiuyun1; Song, Chunlei1; Zhou, Yiyong1 |
| 刊名 | WATER AIR AND SOIL POLLUTION
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 210期号:1-4页码:297-306 |
| 关键词 | Nitrification process Ammonia concentration Nitrite accumulation Chinese shallow lakes |
| ISSN号 | 0049-6979 |
| 通讯作者 | Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu Nan Rd, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | Nitrification is a process in which ammonia is oxidized to nitrite (NO (2) (-) ) that is further oxidized to nitrate (NO (3) (-) ). The relations between these two steps and ambient ammonia concentrations were studied in surface water of Chinese shallow lakes with different trophic status. For the oxidations of both ammonia and NO (2) (-) , more eutrophic lakes generally showed significantly higher potential and actual rates, which was linked with excessive ammonia concentrations. Additionally, both potential and actual rates for ammonia oxidation were higher than those for NO (2) (-) oxidation in the more eutrophic lakes, while in the lakes with lower trophic status, both potential and actual rates for ammonia oxidation were almost equivalent to those for NO (2) (-) oxidation. This can be explained by the excessive unionized ammonia (NH3) concentration that inhibits nitrite-oxidizing bacteria in the more eutrophic lakes. The laboratory experiment with different ammonia concentrations, using the surface water in a eutrophic lake, showed that ammonia oxidation rates were proportional to the ammonia concentrations, but NO (2) (-) oxidation rates did not increase in parallel. Furthermore, NO (2) (-) oxidation was less associated with particles in natural water of the studied lakes. Without effective protection, it would be selectively inhibited by the excessive ammonia in hypereutrophic lakes, resulting in NO (2) (-) accumulation. Shortly, the increased concentrations of ammonia cause a misbalance between the NO (2) (-) -producing and the NO (2) (-) -consuming processes, thereby exacerbating the lake eutrophication. |
| 英文摘要 | Nitrification is a process in which ammonia is oxidized to nitrite (NO (2) (-) ) that is further oxidized to nitrate (NO (3) (-) ). The relations between these two steps and ambient ammonia concentrations were studied in surface water of Chinese shallow lakes with different trophic status. For the oxidations of both ammonia and NO (2) (-) , more eutrophic lakes generally showed significantly higher potential and actual rates, which was linked with excessive ammonia concentrations. Additionally, both potential and actual rates for ammonia oxidation were higher than those for NO (2) (-) oxidation in the more eutrophic lakes, while in the lakes with lower trophic status, both potential and actual rates for ammonia oxidation were almost equivalent to those for NO (2) (-) oxidation. This can be explained by the excessive unionized ammonia (NH(3)) concentration that inhibits nitrite-oxidizing bacteria in the more eutrophic lakes. The laboratory experiment with different ammonia concentrations, using the surface water in a eutrophic lake, showed that ammonia oxidation rates were proportional to the ammonia concentrations, but NO (2) (-) oxidation rates did not increase in parallel. Furthermore, NO (2) (-) oxidation was less associated with particles in natural water of the studied lakes. Without effective protection, it would be selectively inhibited by the excessive ammonia in hypereutrophic lakes, resulting in NO (2) (-) accumulation. Shortly, the increased concentrations of ammonia cause a misbalance between the NO (2) (-) -producing and the NO (2) (-) -consuming processes, thereby exacerbating the lake eutrophication. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Environmental Sciences; Meteorology & Atmospheric Sciences; Water Resources |
| 类目[WOS] | Environmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 关键词[WOS] | NITRITE-OXIDIZING BACTERIA ; LOWER SEINE RIVER ; NITRIFYING BACTERIA ; INORGANIC NITROGEN ; ESTUARY ; DIVERSITY ; SEDIMENT ; ARCHAEA ; NITROBACTER ; COMMUNITY |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China [2008CB418006]; Chinese Academy of Sciences [KZCX2-YW-426-01, KZCX1-YW-14-1] |
| 语种 | 英语 |
| WOS记录号 | WOS:000278695600027 |
| 公开日期 | 2010-12-23 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/13699]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Guoyuan,Cao, Xiuyun,Song, Chunlei,et al. Adverse Effects of Ammonia on Nitrification Process: the Case of Chinese Shallow Freshwater Lakes[J]. WATER AIR AND SOIL POLLUTION,2010,210(1-4):297-306. |
| APA | Chen, Guoyuan,Cao, Xiuyun,Song, Chunlei,&Zhou, Yiyong.(2010).Adverse Effects of Ammonia on Nitrification Process: the Case of Chinese Shallow Freshwater Lakes.WATER AIR AND SOIL POLLUTION,210(1-4),297-306. |
| MLA | Chen, Guoyuan,et al."Adverse Effects of Ammonia on Nitrification Process: the Case of Chinese Shallow Freshwater Lakes".WATER AIR AND SOIL POLLUTION 210.1-4(2010):297-306. |
入库方式： OAI收割
来源：水生生物研究所
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