Alcohol density correction table and related issues
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Is there a density correction formula for Jingmen? Generally, after alcohol is brought in, its density is measured on-site, and then the concentration is corrected based on temperature. But could someone share that correction formula?;/ Does anyone have any information on chromatography? For example: Today, the analyst told me that gas chromatography is an inorganic chromatography method, and that organic compounds appear as peaks first or something like that Is there any information available on this topic? Thank you for sharing.
If the formula isn’t available, look it up in a table directly. “Today, the analyst told me that gas chromatography is an inorganic chromatography method, and that organic compounds elute first or something like that? ”Inorganic chromatography? Is chromatography also divided into organic and inorganic? What thermal conductivity are you using? Can it measure inorganic substances in water? Can it detect other inorganic substances as well? Ion chromatography again?
It’s impossible to measure water, as the columns inside are inorganic.
Gas chromatography can be used to determine water content, but it requires strict conditions. Many inorganic permanent gases are determined using gas chromatography. Different chromatography columns exhibit varying retention properties for different components, and the order in which peaks appear is not necessarily such that inorganic substances emerge first and organic substances later.
This post was last edited by qugd on 2011-9-6 at 15:33. For testing alcohol purity, the simplest method on-site is to use a hydrometer. If an automatic densitometer is used, it usually has automatic temperature compensation, which allows the concentration value to be obtained directly. If density and temperature values are measured separately, the density value must be obtained by consulting a table or using an empirical formula. It is best for the poster to create their own density-temperature-purity table using alcohol of different purities, based on their actual conditions; since some data sheets provide values for pure water and alcohol, and there may be some deviations for one’s specific sample. The original poster can refer to the content of this post. Also, write the Chinese characters correctly next time. http://bbs.hcbbs.com/thread-899712-1-1.html