otitis-externa 发表于 2025-3-21 20:02:04
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s for and from industry has become the most important application of analytical chemistry . Gas chromatography is a popular tool in these analyses, giving in a single experiment the concentrations of many impurities in a sample.扩音器 发表于 2025-3-22 09:00:10
e separation of such compounds as can be vaporized without decomposition . Thus, gas chromatography cannot be used directly for the separation of nonvolatile, high-molecular-weight compounds; its application is limited to volatile compounds having a vapor pressure of at least several millimeters at the temperature of the analysis.盘旋 发表于 2025-3-22 16:26:02
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978-94-010-5062-3Springer Science+Business Media Dordrecht 1992SUGAR 发表于 2025-3-23 02:52:01
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