Characteristics of a cobalt-based phosphate microelectrode for in situ monitoring of phosphate and its biological application.
Characteristics of a cobalt-based phosphate microelectrode for in situ monitoring of phosphate and its biological application.
复制标题
用于磷酸盐原位监测的钴基磷酸盐微电极的特性及其生物应用。
DOI：
10.1016/j.snb.2008.10.032
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发表时间：
2009-03-28
影响因子：
8.4
通讯作者：
Bishop, Paul L.
中科院分区：
文献类型：
--
作者：
Lee, Woo Hyoung;Seo, Youngwoo;Bishop, Paul L.
磷酸盐的原位监测在许多环境应用中非常重要，特别是涉及生物处理过程和富营养化监测的应用。用钴丝制作了一种尖端尺寸较小（约10 μm）的微电极，并对其进行了表征和评价，用于磷酸盐的生物学应用中的原位和体内环境分析。该钴基微电极的电化学性能进行了全面检查，其特性，包括检测限，响应时间，选择性，重现性，寿命，干扰pH值，离子和溶解氧（DO），和搅拌效果。该微电极在各种环境条件下对正磷酸根离子（HPO 42-，H2 PO 4-）表现出优异的选择性。发现碱度和DO干扰电极对磷酸盐的响应。用扫描电子显微镜（SEM）和循环伏安法（CV）对磷酸盐微电极进行了评价。将研制的微电极用于微生物絮体中磷酸盐的现场监测。在厌氧（磷释放）条件下观察到整个絮体的磷酸盐分布。这种完整的表征和成功的应用表明，钴基磷酸盐微电极可以是一个非常有用的工具，在各种环境条件下，包括在微生物絮体中的磷酸盐的原位测量。
The in situ monitoring of phosphate has been of great importance in many environmental applications, particularly those involving biological treatment processes and eutrophication monitoring. A microelectrode with small tip size (~10 μm) was fabricated with cobalt wire, characterized and evaluated for in situ and in vivo environmental analysis of phosphate in biological applications. The electrochemical performance of this cobalt-based microelectrode was fully examined for its characteristics, including detection limit, response time, selectivity, reproducibility, life time, interference with pH, ions and dissolved oxygen (DO), and the stirring effect. The microelectrode showed excellent selectivity for the orthophosphate ions (HPO42−, H2PO4−) in various environmental conditions. Alkalinity and DO were found to interfere with electrode response to phosphate. The phosphate microelectrode was also evaluated with Scanning Electron Microscopy (SEM) and Cyclic Voltammetry (CV). The developed microelectrode was used for in situ monitoring of phosphate in microbial flocs. Well-defined phosphate profiles across the flocs were observed under anaerobic (phosphorus release) conditions. This full characterization and successful application showed that the cobalt-based phosphate microelectrodes can be a very useful tool for in situ measurement of phosphate in various environmental conditions, including within microbial flocs.
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影响因子：
6.1
作者：
De Marco, R;Phan, C
通讯作者：
Phan, C
影响因子：
3.1
作者：
Li, BK;Bishop, PL
通讯作者：
Bishop, PL
影响因子：
7.4
作者：
XIAO, D;YUAN, HY;YU, RQ
通讯作者：
YU, RQ
用酞菁钴制备的离子选择性聚合膜磷酸盐电极的响应特性和电极过程的表征
影响因子：
4.5
作者：
LIU, JH;MASUDA, Y;SEKIDO, E
通讯作者：
SEKIDO, E
影响因子：
12.6
作者：
Engblom, SO
通讯作者：
Engblom, SO