• 气相色谱仪测定二碳酸二甲酯的纯度

    详细信息

     加工定制:是  品牌:浩瀚色谱  型号:XiangyingGC7990plus  
     测量范围:ppm  测量对象:二碳酸二甲酯的纯度  控温范围:450 ℃ 
     功率:2000 w 尺寸:480 mm 重量:45 kg 
     碳酸二甲酯:二碳酸二甲酯的纯度  白酒:内标 食品添加剂  芝麻香白酒:3-甲硫基丙醇  
     液化气:二甲醚  氯化亚砜:二氯化硫   
                      Dimethyl carbonate (dmdc, the name of the commodity, Viggo spirit) as a food additive, which decompose to produce methanol rarely, not health effects, and sodium benzoate, sorbic acid (potassium) will make the product produce peculiar smell and dmdc and wine or beverage in other components of the reaction is very weak, is a better inhibitor of yeast. Reports on the purity detection of two carbonate two were reported.
              Tengzhou City Xiangying Analysis Technology Co., Ltd. selected XiangyingGC7990plus gas chromatograph (GC), capillary chromatographic column, hydrogen flame ionization detector (FID) using temperature programmed, with methyl isobutyl ketone as internal standard, a method for determination of purity of dimethyl carbonate (DMC) (dmdc) by gas chromatography was established. Under the optimized condition, the correlation coefficient r=0.9996, the detection limit is 0.5 mg/kg, the linear range is 1 ~ 100 mg/kg, the actual sample is determined, the standard recovery rate is 98.7% ~ 90.2%, the relative standard deviation is 2.9% ~ 5.2%. The method was applied to the analysis of the purity of two methyl carbonate in food additive two.
            二碳酸二甲酯(DMDC,商品名维果灵)作为食品添加剂,其分解产生的甲醇量极少,不致影响健康,而苯甲酸钠,山梨酸(钾)都会使产品产生异味,而且DMDC与酒或饮料中的其他成份反应极弱,是较好的酵母抑制剂。有关二碳酸二甲酯纯度检测的报道较少。
           滕州市翔鹰分析技术有限公司选用XiangyingGC7990plus气相色谱仪,毛细管色谱柱、氢火焰离子化检测器(FID),采用程序升温,以甲基异丁酮为内标物,建立了测定二碳酸二甲酯(DMDC)纯度的气相色谱法。在优化的条件下,方法相关系数r=0.9996,检测限为0.5 mg/kg,线性范围为1.0~100 mg/kg,对实际样品进行测定,加标回收率为90.2%~98.7%,相对标准偏差为2.9%~5.2%。方法适用于食品添加剂二碳酸二甲酯的纯度分析。

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    翔鹰技术,中国分析技术的领跑者
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