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玻璃柱測食品添加劑三氯蔗糖中甲醇
玻璃柱測食品添加劑三氯蔗糖中甲醇 詳細信息：


名稱：玻璃柱
固定相：聚苯乙烯
規(guī)格：2.1m*4mm（內(nèi)徑）
型號：GDX-102，0.2mm-0.15mm
應用：GB 25531-2010 食品安全國家標準 食品添加劑 三氯蔗糖

本標準適用于以蔗糖為原料，用氯原子選擇性取代三個羥基而制得的食品添加劑三氯蔗糖。


浩瀚色譜（山東）應用技術開發(fā)有限公司建立了頂空氣相色譜法(HSGC)同時測定三氯蔗糖中甲醇、殘留量的分析方法。用GDX-102玻璃柱,以保留時間定性,內(nèi)標法定量,探討了鹽溶液、相比、平衡溫度、平衡時間和振蕩幅度等因素對測定結果的影響。結果表明,以100 g/L NaCl溶液為溶解液,取1mL溶液于20 mL頂空瓶中,平衡溫度為80℃,平衡時間為15 min,振蕩幅度低的條件下,該方法線性關系良好,線性方程的相關系數(shù)r在0.9999~1之間;方法精密度RSD(n=6)小于2.0%。三氯蔗糖樣品的加標平均回收率均在95%以上。


玻璃柱測食品添加劑三氯蔗糖中甲醇  測試譜圖：


Determination of Methanol in Food Additive Sucralose by Glass Column
Determination of Methanol in Food Additive Sucralose by Glass Column Details:


Name: Glass Column
Stationary phase: polystyrene
Specification: 2.1m*4mm (inner diameter)
Model: GDX-102, 0.2mm-0.15mm
Application: GB 25531-2010 National Food Safety Standard Food Additive Sucralose

This standard applies to the food additive sucralose prepared by using sucrose as a raw material and selectively substituting chlorine atoms for three hydroxyl groups.


Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established a headspace gas chromatography (HSGC) method for simultaneous determination of methanol and residues in sucralose. Using GDX-102 glass column, with retention time qualitative and internal standard method for quantification, the influence of factors such as salt solution, comparison, equilibrium temperature, equilibrium time and oscillation amplitude on the measurement results were discussed. The results show that, taking 100 g/L NaCl solution as the dissolving solution, taking 1 mL of the solution in a 20 mL headspace bottle, the equilibrium temperature is 80°C, the equilibrium time is 15 min, and the oscillation amplitude is low, the method has a good linear relationship. The correlation coefficient r of the linear equation is between 0.9999~1; the method precision RSD (n=6) is less than 2.0%. The average recoveries of sucralose samples were all above 95%.


Test spectrum of methanol in food additive sucralose measured by glass column: 


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