کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148860 | 1462105 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of a photoelectrochemical sensor for monitoring algal biomass (Chlorella vulgaris)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
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 (μA minâ1) against algal biomass concentrations (g Lâ1) produced a reasonable correlation coefficient (r2 = 0.9938). The sensor system exhibited a high sensitivity to algal biomass at a concentration as low as 0.065 g Lâ1and a rapid response time, which is promising for further applications of the sensor system in algal-related industries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 405-410
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 405-410
نویسندگان
Hyeon Jin Jeon, Yong-Keun Choi, Kyung-Guen Song, Sang Hyun Lee, Yung-Hun Yang, Hyungsup Kim, Sunghyun Kim, Rangarajulu Kumaran, Seok Won Hong, Hyung Joo Kim,