用于400 PPBV以下乙烯选择性测量的大容量片上预浓缩装置

S. Janßen, T. Teßmann, M. Niessen, A. Sklorz, W. Lang
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引用次数: 3

摘要

本文提出的小型气相色谱仪首次能够检测浓度为400 ppbv的乙烯。从这一测量推断,可以达到低于50 ppbv的检测限,这对于更年期水果的保质期预测是绝对强制性的。为了达到所需的灵敏度,实现了一种全新的大容量片上预富集装置。测试了新的固定相。使用的填充气相色谱柱现在能够将汽化水和乙烯气体相互分离,这是环境空气中乙烯浓度分析的一个突破。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Large-capacity-on-chip preconcentrator device for selective ethylene measurement below 400 PPBV
The small gas chromatograph presented in this paper was for the first time able to detect an ethylene concentration of 400 ppbv. Deduced from this measurement a detection limit below 50 ppbv can be reached which is absolutely mandatory for the shelf life prediction of climacteric fruits. To achieve the necessary sensitivity a complete new large-capacity-on-chip preconcentrator device was realized. New stationary phases were tested. The used packed gas chromatography column is now capable to separate vaporized water and ethylene gas from each other which was a yields a breakthrough in the analysis of ethylene concentrations in ambient air.
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