IODP Expedition 397 Gas safety report

This composite report returns data from two different gas chromatograph configurations (GC3 and NGA). Each row combines data from several measurements made on the same sample at the same time for a particular headspace or vacutainer sample. If data do not exist for a particular expedition, the column does not appear. Gas samples were measured by gas chromatography and either flame ionization detection (GC-FID) or thermal conductivity detection (GC-TCD). Reported analytes may include methane, ethane, ethene, propane, propene, n-butane, i-butane, n-pentane, i-pentane, n-hexane, i-hexane, n-heptane, i-heptane, nitrogen, oxygen, carbon monoxide, carbon dioxide, and hydrogen sulfide. When data are available, methane to (ethane + ethene) ratio (C1/C2�ratio) is reported. To identify individual samples and tests, see each separate analysis (GC3, NGAFID, and/or NGATCD).

本综合报告提供了两种不同气相色谱配置（GC3与NGA）的检测数据。每一行数据整合了针对同一顶空样品或真空采血管样品，在相同时间内开展的多次测量结果。若某一特定采样任务未获取对应数据，则报告中将不包含该列。气体样品采用气相色谱法结合火焰离子化检测（GC-FID）或热导检测（GC-TCD）完成分析测定。本次报告涵盖的分析物包括甲烷、乙烷、乙烯、丙烷、丙烯、正丁烷、异丁烷、正戊烷、异戊烷、正己烷、异己烷、正庚烷、异庚烷、氮气、氧气、一氧化碳、二氧化碳以及硫化氢。若有可用数据，将报告甲烷与（乙烷+乙烯）的比值（C1/C2�比值）。如需识别单一样品与检测项，请查阅各独立分析报告（GC3、NGAFID及/或NGATCD）。