温度对膜进样质谱溶解气渗透效率影响的研究

Study on the Effect of Temperature on Dissolved Gas Permeation Efficiency of Membrane Injection Mass Spectrometry

水下质谱作为重要的海洋装备,具有一致性好、指向性强、多种物质同时检测等优势,在深海探测领域得到了广泛应用。然而,水下质谱的膜渗透效率极易受环境温度的影响,该影响增加了溶解气浓度反演的难度,同时降低了检测结果的准确性。该文面向深海环境(温度变化范围:4~35℃),开展了温度对膜渗透效率的影响研究。结果表明,35℃条件下的膜渗透效率相对于4℃条件下的膜渗透效率增长了约2倍。同时温度升降实验结果表明,膜渗透效率不仅与当前温度有关,同时还受到历史温度的影响,即温度对膜渗透效率的影响存在滞后效应。该研究量化了温度对膜渗透效率的影响,揭示了膜进样技术存在温度滞后现象,为溶解气浓度的准确反演提供了方法参考。

As an important marine equipment,underwater mass spectrometry has the advantages of good consistency,strong directivity,and simultaneous detection of multiple substances,and has been widely used in the field of deep-sea exploration.However,the sampling efficiency(membrane permeation efficiency)of underwater mass spectrometry is highly susceptible to the influence of ambient temperature,which increases the difficulty of dissolved gas concentration inversion and reduces the accuracy of detection results.This article focuses on the deep sea environment(temperature change range:4-35℃)and conducts research on the impact of temperature on membrane permeability efficiency.The results show that in this temperature range,the membrane permeation efficiency of dissolved gas increases approximately three times.At the same time,the temperature rise and fall experimental results show that the membrane permeation efficiency is not only related to the temperature at the current moment,but also affected by the historical temperature.That is,the influence of temperature on the membrane permeation efficiency has a hysteresis effect.This study quantifies the effect of temperature on membrane permeation efficiency,reveals the phenomenon of temperature lag in membrane sampling technology,and provides a method reference for accurate inversion of dissolved gas concentration.