期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 185, 期 -, 页码 405-410出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.05.026
关键词
Photoelectrochemical sensor; Algal biomass; Algae detection sensor; 2-Hydroxyl-1,4-naphthoquinone; Chlorella vulgaris
资金
- Korea Ministry of Environment [405-112-038, 2012-000620001]
- Korea Environmental Industry & Technology Institute (KEITI) [405-112-038] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Herein, we present a novel photoelectrochemical sensor system for the rapid enumeration of algal biomass. The photosynthesis-based reducing action of algal cells on the electrochemical mediator 2-hydroxyl-1,4-naphthoquinone (HNQ) was used as the basis of an amperometric sensor system. By using a simple LED (Light-Emitting Diode) installed three-electrode cell, the mediator that was reduced by algal metabolic activity was reoxidized at a platinum-working electrode and held at a positive potential. In the presence of CO2 as an electron donor, and LED illumination as an energy source for the algal cells, the reoxidation current and its rate of increase were found to depend on the concentration of algal biomass. Regression analyses plotting the initial rate of current (mu A min(-1)) against algal biomass concentrations (g L-1) produced a reasonable correlation coefficient (r(2) = 0.9938). The sensor system exhibited a high sensitivity to algal biomass at a concentration as low as 0.065 g L-1 and a rapid response time, which is promising for further applications of the sensor system in algal-related industries. (c) 2013 Elsevier B.V. All rights reserved.
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