The limiting role of oxygen penetration in sediment nitrification
文献类型：期刊论文
| 作者 | Wang, Chao; Zhai, Wanying; Yin, Wei; Shan, Baoqing |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2015-07 |
| 卷号 | 22期号:14页码:10910-10918 |
| 关键词 | Nitrification Sediment Oxygen profile Oxygen penetration Voltammetry Microelectrode |
| 英文摘要 | Oxygen penetration is a key determinant of sediment nitrification rates. In this study, we analyzed the effect of oxygen penetration on the sediment nitrification rate based on sediment oxygen profiles. Six sediments were designed to produce different oxygen profiles by adding different amounts of silica gel to the collected river mud. The oxygen profiles in the sediment were detected using a voltammetric microelectrode. With increased mud content, the sediment oxygen penetration depth decreased from 8.3 to 2.6 mm, and the oxygen concentration in the overlying water and at the sediment-water interface also showed a decreasing trend. The measured nitrification rate displayed a quadratic pattern that changed with the increase in mud content. Based on the detected oxygen profiles, the nitrification rate at each depth was calculated and summed to obtain the bulk sediment nitrification rate. The bulk sediment nitrification rate showed a consistently changing pattern with the measured rate. Oxygen profiles used to calculate nitrification rates could be approximated by the penetration depth (delta). The resulting nitrification model based on delta could explain the limiting role of oxygen penetration in sediment nitrification. |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000357344300052 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32863]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Chao,Zhai, Wanying,Yin, Wei,et al. The limiting role of oxygen penetration in sediment nitrification[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015,22(14):10910-10918. |
| APA | Wang, Chao,Zhai, Wanying,Yin, Wei,&Shan, Baoqing.(2015).The limiting role of oxygen penetration in sediment nitrification.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(14),10910-10918. |
| MLA | Wang, Chao,et al."The limiting role of oxygen penetration in sediment nitrification".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.14(2015):10910-10918. |
入库方式： OAI收割
来源：生态环境研究中心
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