期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 42, 期 22, 页码 8465-8470出版社
AMER CHEMICAL SOC
DOI: 10.1021/es8010157
关键词
-
资金
- Natural Science Foundation of China [20577048, 50625825, 50738006]
- National Synchrotron Radiation Laboratory
- Shanghai Tongji Gan Ting-Yao Environment Development Foundation
In this work a novel gold-based microelectrode was successfully fabricated using photolithographic techniques and electrochemical deposition for a simultaneous determination of nitrate and dissolved oxygen (DO) under neutral conditions. Three-dimensional tree-shaped silver nanorods were formed on the gold surface through electrochemical deposition and they had an electrochemical catalytic reductive activity for both nitrate and oxygen under neutral conditions. Thus, the silver nanorods served as the active center of the microelectrocle. The microelectrode could be renewed over five times. Linear sweep voltammetry was employed to quantitatively analyze the nitrate and DO in solution. The microelectrocle was used to measure the nitrate and DO microprofiles in a nitrifying aerobic granule from a sequencing batch reactor, which shows that denitrification did not occur in the tested granule. The measurement results demonstrate that the microelectrode was able to simultaneously determine the nitrate and DO levels in the granules under neutral conditions accurately and precisely.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据