马媛媛^1,2, 辛洋^2,3, 蒋磊²
1.浙江大学海洋学院, 浙江 舟山 316000;2.中国科学院深海科学与工程研究所, 海南 三亚 572000;3.中国科学院大学, 北京 100049

摘要:
统计了全球38个热液活动区264个热液喷口流体样品中的H₂S浓度数据，结果表明H₂S浓度主要受岩浆去气、水岩反应、相分离作用影响，而广泛使用的非气密保压采样技术不能反映原始喷口流体状态和化学组成，可能会造成H₂S浓度测量误差。为了提高测量数据的精度，一方面需要进一步发展气密保压采样技术，以提高样品的保真水平；另一方面利用深海原位电化学传感器或拉曼光谱系统进行海底原位探测也将是一个重要的发展方向。
关键词:海底热液喷口H₂S浓度气密采样器原位探测
DOI：10.11759/hykx20190311002
分类号:P736.4
基金项目:国家自然科学基金项目（41873068）

Concentration statistics and detection technology of hydrogen sulfide in submarine hydrothermal vent fluids
MA Yuan-yuan^1,2, XIN Yang^2,3, JIANG Lei²
1.Ocean College, Zhejiang University, Zhoushan 316000, China;2.Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China;3.University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:
A total of 264 hydrogen sulfide (H₂S) concentrations in hydrothermal vent fluids were collected from 38 hydrothermal fields worldwide, indicating that H₂S concentrations are mainly affected by magma degassing, water-rock reaction, and phase separation. However, the widely used non gas-tight, pressure-retaining sampling technology cannot reflect the state and chemical composition of original hydrothermal vent fluids and may cause errors in the measurement of the H₂S concentrations. To improve data precision, it is necessary to develop the pressure-retaining, gas-tight sampler to enhance the accuracy of the samples. Alternatively, the application of deep-sea in-situ electrochemical sensors or a Raman spectroscopy system for in-situ detection will also be an important development.
Key words:hydrothermal vent fluidsH₂S concentrationsgas-tight samplerin-situ detection





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