A system for measuring the photosynthetic activity of water plants based on carbon dioxide absorption

Author

Nakaoka, Shinichiro ; Yamada, Akimasa

Author_Institution

Dept. of Mech. Syst. Eng., Hiroshima Inst. of Technol., Hiroshima, Japan

fYear

2012

fDate

4-7 Nov. 2012

Firstpage

29

Lastpage

31

Abstract

This paper reports a method for measuring the photosynthetic activity of water plants. Plants in photosynthesis absorb carbon dioxide (CO₂) and release carbohydrates and oxygen. As CO₂ is readily soluble in water and decreases pH, the pH of water reflects the degree of photosynthesis of water plants. To quantify the small changes of pH, we applied an automated pH measurement system consisting of an ion-sensitive field effect transistor (ISFET) sensor we developed earlier. The pH measured in a test tank containing the water plant Cabomba caroliniana rose by 0.840 pH after 4 hours of light irradiation. This CO₂ absorption of the plant during photosynthesis could be determined based on this pH measurement.

Keywords

biochemistry; biological techniques; biomolecular effects of radiation; botany; carbon compounds; cellular effects of radiation; ion sensitive field effect transistors; pH; photosynthesis; CO₂; Cabomba caroliniana; ISFET sensor; carbohydrates; carbon dioxide absorption; ion-sensitive field effect transistor sensor; light irradiation; oxygen; pH measurement system; photosynthetic activity; water plants;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro-NanoMechatronics and Human Science (MHS), 2012 International Symposium on

Conference_Location

Nagoya

Print_ISBN

978-1-4673-4811-9

Type

conf

DOI

10.1109/MHS.2012.6492395

Filename

6492395