沉积物中有机碳特性的臭氧氧化分析技术

Analytic technology of organic carbon in sediment with ozonation chemiluminescence method

提出了一种现场、快速分析沉积物中有机碳特性的方法。对臭氧与沉积物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沉积物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沉积物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沉积物化学发光动力学曲线特征有很大特异性的现象,提出了建立沉积物中有机碳特征编码"有机碳指纹"的概念。

A method of rapid analysis of organic carbon in sediment in situ is recommended,based on the researches on the phenomenon of chemiluminescence of organic carbon in sediment reacting with ozone.A Chemiluminescence kinetics curve was obtained using an experimental prototype instrument,and used to analyze content and characteristics of the organic carbon in sediment,such as the proportion of hard-oxidation,easy oxidation and middling stabilization.The effectiveness of the method was verified comparing the results with the existing detection method.Based on the finding that the sediments varied sharply in chemiluminescence feature from type to type,a concept of ＂organic carbon fingerprint＂ is recommended.