Development of on-site analysis for pollutant in ground water based on digitization color reaction for developing country

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It was found reaction with dynamic color change from conventional color reaction. Moreover, I could develop visual analysis for pollutant such as fluoride by counting number of color change using this color reaction. Furthermore, the proposed method was evaluated by user test of Tunisia’s high school student. As a result, it was found that this method has problem in portability in Japan and overseas and simplicity of operation.