Mechanisms of nitrite accumulation occurring in soilnitrification
文献类型：期刊论文
| 作者 | Shen, QR; Ran, W; Cao, ZH |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 50期号:6页码:747-753 |
| 关键词 | nitrification nitrate nitrite ammonium |
| ISSN号 | 0045-6535 |
| 通讯作者 | Shen, QR(qrshen@njau.edu.cn) |
| 英文摘要 | Because low concentration of nitrite could be toxic to biological systems and high amounts of nitrite have been observed in a river of northern China since 1990, nitrite from agricultural soil sources should be investigated. In this paper, effects of levels of ammonium-N (NH4+-N), soil pH and nitrification inhibitors on NO2- accumulation, and duration of nitrite in soils were studied. Application of 11.2 mg of nitrapyrin kg(-1) soil or 11.2 mg of sodium azide kg(-1) soil dramatically suppressed nitrite occurrence. Within all incubation times and at all levels of ammonium-N input, we did not detect any measurable NO2-N accumulation in samples of Yellow-brown earth (pH 5.67), but observed huge accumulation in the 2 alkaline soils, Fluvo-aquic loam (pH 7.89) and Fluvo-aquic sand (pH 8.20). The concentrations of nitrite in both alkaline soils were related to ammonium-N levels. The effect of pH on nitrite accumulation was demonstrated by using slurries of Fluvo-aquic sand under continuous aeration and buffers of different pH. Data showed that nitrite concentration increased with the elevated pH, yet that ammonia oxidizers from the original soil (pH 8.2) could adapt to the new medium of low pH (pH 5.35). Dynamic changes of nitrite in soils amended with different rates of nitrite-N were also measured in 6 days. Thereby, we concluded that nitrite was unstable in acid soils, but durable in alkaline soils. The authors suggested that NO2 accumulation in field soils and its subsequent environmental impact should receive more attention. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | NITROSOMONAS-EUROPAEA ; NITRIFICATION ; NITRATE ; SOIL ; INHIBITORS ; OXIDATION ; AMMONIA ; OXYGEN |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000180082200012 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559298 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Shen, QR |
| 作者单位 | 1.Nanjing Agr Univ, Coll Nat Resources & Environm Sci, Nanjing 210095, Peoples R China 2.Acad Sinica, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, QR,Ran, W,Cao, ZH. Mechanisms of nitrite accumulation occurring in soilnitrification[J]. CHEMOSPHERE,2003,50(6):747-753. |
| APA | Shen, QR,Ran, W,&Cao, ZH.(2003).Mechanisms of nitrite accumulation occurring in soilnitrification.CHEMOSPHERE,50(6),747-753. |
| MLA | Shen, QR,et al."Mechanisms of nitrite accumulation occurring in soilnitrification".CHEMOSPHERE 50.6(2003):747-753. |
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来源：南京土壤研究所
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