Tekmar 吹扫捕集管选择指南

2018-05-28 18:58  下载量:74

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Purge and Trap concentration is a typical technique used for the analysis of Volatile Organic Compounds (VOCs). The major component of any Purge and Trap system is the analytical trap. It is responsible for retaining the VOCs during the extraction or purge step and then releasing them upon heating. An analytical trap choice for Purge and Trap concentration offers specific challenges for end users. While most standard methods define the dimensions of the trap as well as recommended packing materials, there are multiple packing choices that can be substituted, provided they meet the analytical requirements of the method. This bulletin is intended to describe the characteristics of the traps, compounds they retain, and the ideal operating conditions for the particular trap. In some cases a trap choice can be as specific as a single agent for one particular class of compounds or as diverse as multiple agents for several compound classes.

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