IODP Expedition 376 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).

本综合报告涵盖两种不同气相色谱仪（gas chromatograph）配置（GC3与NGA）的检测数据。每一行数据均整合了针对同一顶空（headspace）样本或真空采血管（vacutainer）样本，在同一时段内完成的多次测量结果。若某一特定考察任务无对应数据，则报告中将不包含该列。气体样本通过气相色谱法结合火焰离子化检测（flame ionization detection, GC-FID）或热导检测（thermal conductivity detection, GC-TCD）进行分析。本次报告涉及的分析物包括：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、二氧化碳及硫化氢。若有可用数据，则报告甲烷与（乙烷+乙烯）的比值（C1/C2�比值）。如需识别单个样本与检测任务，请参阅各独立分析报告（GC3、NGAFID及/或NGATCD）。