cold trap

An aliquot of approximately of 30 mL of seawater was introduced into a glass stripping chamber where the dissolved gases were purged with purified N2 gas, and the evolved CFCs concentrated in the cold trap.

把大约30mL海水引入到一个玻璃气提器中,用高纯氮气将溶解在海水中氯氟烃(CFC's)吹扫出来浓缩在冷捕集器中,然后把捕集器加热,用高纯氮气CFC's送入气相色谱分离柱,CFC's由电子捕获检测器(ECD)检测出。

, gasstripping and cryogenic trapping is applied to preconcentrate the sea watersample, then a gas chromatograph with a flame photometric detector is used for analysis.

本文采用气提－冷阱捕集法处理海水样品，用带有火焰光度检测器的气相色谱仪分析。