深海原位溶解甲烷传感器(METS)的原理及应用研究

The Principle and Applied Research of In-situ METS for Dissolved Methane Measurement in Deep Sea

近年来,海水中溶解甲烷的探测技术成为国内外学者的研究热点。与传统的实验室利用气相色谱法检测离散海水甲烷浓度的方法相比,基于膜脱气技术的METS甲烷传感器具有体积小、操作简便、原位实时连续观测等特点,并且可与其他化学、物理传感器集为一体进行甲烷探测。主要介绍了METS传感器的基本原理、特点,给出了技术指标和规格参数,分析了其性能制约因素与校正方法,并总结了METS传感器在性能测试、麻坑成因、潮汐作用机理等方面的应用成果。

In recent years, the detecting technology for dissolved methane in seawater has become a focus of oversea and domestic researchers. Compared with traditional laboratory methods, which generally use the gas chromatography to detect methane concentrations of the discrete seawater, the methane sensor（METS） based on the technology of membrane degassing has the advantages of small size, simple operation and in-situ continuous real-time observation, and can also conduct methane detection combined with other chemical and physical sensors. This paper introduces the basic principle and characteristics of the METS, provides its technical data and specification parameters, and analyzes the major constraint factors and associated correction method. Finally,it summarizes the application achievements of the METS in performance testing, pockmark formation and tidal action mechanism.