haohan食品级液体二氧化碳中氯乙烯环氧乙烷乙醛甲醇苯测定毛细管柱30m*0.53mm

水溶液气味、味道及外观"是食品级二氧化碳产品中一项极其重要的感官评价指标,在GB 10621-2006标准中,它是对质量要求中已量化的及未明确限定的杂质给出一个综合的终端限制.二氧化碳产品的主要原料来自于各种工业废气及地下气井，不同的生产原料和生产工艺生产的二氧化碳产品中，产生异味的物质不同，感官的味道亦差别很大。如:油的味道多源于烃类杂质的;醇类、醛、醚类等含氧有机物会呈现淡淡的酒香及甜味;硫化物则有着强烈的恶臭及腐味。在硫化物以总硫方式控制合格的前提下，发酵尾气回收的二氧化碳产品中可能产生异味的杂质通常为醇、醛、醚、酮、酯等含氧有机物。当"水溶液气味、味道及外观"检验不合格时，应通过仪器分析确定"异味源"，并给出定量分析结果，以免因为人的感观差异而导致对检测结果产生异议。另外针对发酵尾气原料，在建议二氧化碳提纯工艺时，要考虑对未知有机物的去除，确保生产出合格的产品。

浩瀚色谱（山东）应用技术开发有限公司，与时俱进，研发独树一帜的毛细管柱一次进样直接测定食品级二氧化碳中氯乙烯，环氧乙烷，乙醛，甲醇和痕量的苯，柱效高，分离良好，结果满意。

规格：30m*0.53mm

Odor of aqueous solution Taste and appearance "It is an extremely important sensory evaluation index for food grade carbon dioxide products. In the GB 10621-2006 standard, it provides a comprehensive terminal limit for the quantized and unspecified impurities in the quality requirements. The main raw materials of carbon dioxide products come from various industrial waste gases and underground gas wells. Different production raw materials and carbon dioxide products produced by different production processes have different odor producing substances and different sensory tastes Very big. For example, the taste of oil mostly comes from hydrocarbon impurities; Oxygenated organic substances such as alcohols, aldehydes and ethers will present light wine fragrance and sweet taste; Sulfide has a strong odor and rotten smell. Under the premise that the sulfide is controlled in the form of total sulfur, the impurities that may produce odor in the CO2 product recovered from the fermentation tail gas are usually alcohols, aldehydes, ethers, ketones, esters and other oxygenated organic substances. When the inspection of "smell, taste and appearance of aqueous solution" is unqualified, the "odor source" shall be determined through instrument analysis, and the quantitative analysis results shall be given to avoid any objection to the test results due to the difference of human perception. In addition, for the raw materials of fermentation tail gas, when proposing the carbon dioxide purification process, it is necessary to consider the removal of unknown organics to ensure the production of qualified products.



Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. has developed a unique capillary column for the direct determination of vinyl chloride, ethylene oxide, acetaldehyde, methanol and trace benzene in food grade carbon dioxide with one injection. The column efficiency is high, the separation is good, and the results are satisfactory.