A Feasibility Study on the Simultaneous Sensing of Turbidity and Chlorophyll a Concentration Using a Simple Optical Measurement Method

作者：Isoyama Ryota; Taie Manami; Kageyama Tomoaki; Miura Masashi; Maeda Akihiro; Mori Akihiro; Lee Sang Seok^*

来源：Micromachines, 2017, 8(4): 112.

DOI：10.3390/mi8040112

• water quality monitoring
• turbidity
• chlorophyll a concentration
• optical setup
• wireless sensor network

We have been developing a wireless sensor network system to monitor the quality of lake water in real time. It consists of a sensor module and a system module, which includes communication and power modules. We have focused on pH, turbidity and chlorophyll a concentration as the criteria for qualifying lake water quality. These parameters will be detected by a microfluidic device based sensor module embedded in the wireless sensor network system. In order to detect the turbidity and the chlorophyll a concentration simultaneously, we propose a simple optical measurement method using LED and photodiode in this paper. Before integrating a turbidity and chlorophyll a concentration sensor into the microfluidic device based pH sensor, we performed feasibility studies such as confirmation of the working principle and experiments using environmental water samples. As a result, we successfully verified our simultaneous sensing method by using a simple optical setup of the turbidity and the chlorophyll a concentration.

• 出版日期2017-4