痕量气体预浓缩装置–稳定同位素比质谱仪常见故障分析及维护  

Typical Faults and Maintenance of Trace Gas Preconcentration Device-Isotope Ratio Mass Spectrometer

作　　者：徐文琦 宁晓燕 徐毅 曹亚俐[1] 胡静文[1] 梁生康[1] 张国玲[1] XU Wenqi;NING Xiaoyan;XU Yi;CAO Yali;HU Jingwen;LIANG Shengkang;ZHANG Guoling(Key Laboratory of Marine Chemistry Theory and Technology,Ocean University of China,Qingdao 266100,Shandong China;Element Trading(Shanghai)Co.Ltd.,Shanghai 200000,China)

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛266100 [2]艾力蒙塔贸易(上海)有限公司,上海200000

出　　处：《分析测试技术与仪器》2024年第6期406-411,共6页Analysis and Testing Technology and Instruments

摘　　要：痕量气体预浓缩装置–稳定同位素比质谱仪是测定气体和水体样品中微量二氧化碳、甲烷和氧化亚氮气体碳、氮、氧稳定同位素比值的主要仪器,具有高灵敏度、高准确度等特点,广泛应用于大气科学、环境科学、地球化学等研究.仪器的正确使用、维护和科学管理是获得良好测试数据,提高仪器使用效率和延长仪器使用寿命的基础和保障.主要介绍了痕量气体预浓缩装置–稳定同位素比质谱仪测定水体硝酸盐样品氮氧同位素比值的工作原理和操作流程,并对仪器使用过程中的常见问题提出应对策略.此外,还对痕量气体预浓缩装置–稳定同位素比质谱仪的日常维护和注意事项进行了阐述.The trace gas preconcentration device-isotope ratio mass spectrometer(TGC-IRMS)is the main instrument for the determination of carbon,nitrogen and oxygen isotope ratios of trace carbon dioxide,methane and nitrous oxide in gas and water samples.It has the characteristics of high sensitivity and high accuracy,and is widely used in atmospheric science,environmental science and geochemical research.The correct use,maintenance and scientific management of the instrument is the basis and guarantee for obtaining good test data,improving the efficiency of the instrument and extending the service life of the instrument.The working principle and operation flow of TGC-IRMS for the determination of nitrogen and oxygen isotope ratios of nitrate in water samples were introduced,and some countermeasures were put forward for the common problems in the use of the instrument.In addition,routing maintenance and precautions during the use of TGC-IRMS were also described.

关 键 词：痕量气体预浓缩装置 稳定同位素比质谱仪 故障分析 维护 

分 类 号：O657.63[理学—分析化学] TH17[理学—化学]