Abstract
This paper sums up the developments and achievements of optical methods in the field of dissolved carbon dioxide measurement based on past work. The dissolved CO2 measurement in optical methods is highly applied owing to high sensitivity, fast response and greater versatility with more attention people paid to greenhouse effect. In this article, the measuring is mainly partitioned into fluorescent methods, spectrometric methods and specific optical methods like evanescent field method. Principles, characteristics and structures in previous research are described in detail and our own ideas and perspectives in tendency of dissolved carbon dioxide sensing are emphasized lastly.
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