海水有机碳特性的化学发光分析技术研究

Study of Analysis Technology of Organic Carbon in Seawater with Ozonation Chemiluminescence Method

提出了一种现场、快速分析海水中有机碳特性的方法。对臭氧与海水中有机碳发生氧化反应过程中产生的化学发光动力学曲线特征进行了研究。利用原理试验样机获取了化学发光动力学曲线,根据动力学曲线分析了海水中对应的有机碳含量和有机碳组成特征,例如难氧化有机物所占比例、中等稳定有机物所占比例、易氧化有机物所占比例等性质。通过与现有检测方法相比较,验证了使用臭氧氧化发光分析方法分析海水有机碳含量以及组成特征的有效性。根据实验中得到的不同区域海水化学发光动力学曲线特征有很大特异性的现象,提出了建立海水中有机碳特征编码"有机碳指纹"的概念。

A method for rapid analysis of on-site organic carbon in seawater is recommended.It is based on research on the phenomenon of chemiluminescence of organic carbon in seawater reacting with ozone.A Chemiluminescence kinetics curve was obtained using an experimental prototype instrument,which is used to analyze the content and characteristics of the organic carbon in seawater,such as the proportions of hard-oxidation,easy oxidation and middling stabilization.Effectiveness of the method was verified compared to the results with those of the existing detection method.Based on the finding that seawater in different areas varied sharply in chemiluminescence feature,a concept of ＂organic carbon fingerprint＂ is recommended.