产品介绍
Methanol is a colorless have the smell of alcohol volatile liquid, wide range of USES, is the foundation of organic chemical raw materials and fuel quality, widely used in chemical, pesticide, medicine and fuel, and other fields. Methanol of the communist party of China with low relative molecular mass of ketones, alcohols, esters, normal methanol production process not aromatic hydrocarbons may be produced or existing aromatic residues, so the methanol product standards were not aromatics limited demand at home and abroad.
xiang ying analysis technology co., LTD., proposed the coexistence impurities in methanol, acetone, methyl acetate, ethanol) and trace aromatic (ethyl benzene and p-xylene, m-xylene and o-xylene) content of XingyingGC7990plus gas chromatographic method. The capillary chromatographic column, adopts the column temperature program control, with a hydrogen flame ion detector, separation from various compounds. Acetone, methyl acetate and ethanol in the linear range of 4.0 ~ 20 mg. L - 1, various aromatic compounds are linear in the range of 0.4 ~ 2.0 mg. L - 1. Sample analysis method is used for methanol, standard addition recovery is between 88% ~ 114%, relative standard deviation is 2.56% ~ 4.68% (n = 7).
甲醇系无色有酒精气味的挥发性液体,用途广泛,是基础的有机化工原料和优质燃料,广泛应用于精细化工、农药、医药和燃料等领域。甲醇中共存有低相对分子质量的酮、醇、酯类,正常甲醇生产工艺不可能产生芳烃或存在芳烃残留,因此国内外甲醇产品标准均没有芳烃限量要求。
滕州市翔鹰分析技术有限公司提出了甲醇中共存杂质(丙酮、乙酸甲酯、乙醇)和微量芳烃(乙苯、对二甲苯、间二甲苯和邻二甲苯)含量的XingyingGC7990plus气相色谱测定方法。用毛细管色谱柱,采取程序控制柱温升温,用氢火焰离子检测器,各种化合物完全分离。丙酮、乙酸甲酯和乙醇的线性范围为4.0~20mg.L-1,各芳烃化合物的线性范围为0.4~2.0mg.L-1。方法用于甲醇样品的分析,加标回收率在88%~114%之间,相对标准偏差(n=7)为2.56%~4.68%。