对食品添加剂二氧化碳气体中杂质含量的分析方法进行综述。按照国家标准GB 1886.228–2016《食品安全国家标准食品添加剂二氧化碳》中杂质的种类和指标要求,阐述了二氧化碳中氧、一氧化碳、一氧化氮、二氧化氮、二氧化硫、苯、甲醇、乙醛、环氧乙烷、氯乙烯、氨、氰化氢等杂质的分析方法。需要考虑不同杂质气体的性质,选择相应的分析方法。二氧化碳中杂质含量分析技术在食品添加剂发展过程中具有重要的理论意义以及实际应用价值。
浩瀚色谱（山东）应用技术开发有限公司建立一种新型气相色谱仪分析食品级二氧化碳中一氧化碳、甲烷、丙烷、总烃、甲醇、环氧乙烷、乙醛、氯乙烯、苯等常见杂质的方法.以食品添加剂二氧化碳为样品,对色谱柱、阀切换时间、柱箱温度控制等方面进行优化,建立了良好的快速分析条件,利用外标法确定了食品添加剂二氧化碳中杂质各组分的保留时间.在所建立的分析方法和zui佳实验条件下,一次性进样测定甲烷、丙烷、一氧化碳、丙醇、环氧乙烷、乙醛、氯乙烯和苯,相对标准不确定度在3％ 以内,与国标GB 1886.228–2016相当,线性相关系数大于0.9995,检测时间缩短为国标规定方法的近三分之一.测定结果的相对标准偏差小于3％,与标准值的相对误差小于2％.所建立分析方法和条件具有更精确、简捷的分析特点,同时也大量地节约了检测和仪器维护的成本,提高了工作效率.该法适用于食品级添加剂二氧化碳中杂质的分析检测.
名称：填充柱
固定相：高分子小球
粒度：60-80目
规格：1m*1/8
型号：GDX-104
名称：填充柱
固定相：10%聚乙二醇20M/101白色担体
粒度：60-80目
规格：2m*1/8
型号：10%PEG-20M/101
名称：填充柱
固定相：10%二甲基聚硅氧烷/101白色担体
粒度：60-80目
规格：2m*1/8
型号：10%SE30/101
The analytical methods for the impurity content in carbon dioxide gas of food additives are reviewed. According to the types and index requirements of impurities in the national standard GB 1886.228-2016 "National Food Safety Standard for Food Additives Carbon Dioxide", the oxygen, carbon monoxide, nitric oxide, nitrogen dioxide, sulfur dioxide, benzene, methanol, acetaldehyde, cyclic Analytical method for impurities such as oxyethane, vinyl chloride, ammonia, hydrogen cyanide, etc. The properties of different impurity gases need to be considered, and the corresponding analysis method should be selected. The analysis technology of impurity content in carbon dioxide has important theoretical significance and practical application value in the development of food additives.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. established a new gas chromatograph for the analysis of carbon monoxide, methane, propane, total hydrocarbons, methanol, ethylene oxide, acetaldehyde, vinyl chloride, benzene and other common impurities in food-grade carbon dioxide. . Taking the food additive carbon dioxide as the sample, the column, valve switching time, oven temperature control and other aspects were optimized, and good rapid analysis conditions were established. The retention time of each component of impurities in the food additive carbon dioxide was determined by the external standard method. .Under the established analytical method and optimal experimental conditions, the determination of methane, propane, carbon monoxide, propanol, ethylene oxide, acetaldehyde, vinyl chloride and benzene in a single injection with relative standard uncertainty within 3% , equivalent to the national standard GB 1886.228-2016, the linear correlation coefficient is greater than 0.9995, and the detection time is shortened to nearly one third of the method specified in the national standard. The relative standard deviation of the measurement results is less than 3%, and the relative error with the standard value is less than 2%. The establishment of analytical methods and conditions has the characteristics of more accurate and simple analysis, and also greatly saves the cost of detection and instrument maintenance, and improves work efficiency. This method is suitable for the analysis and detection of impurities in food-grade additives carbon dioxide.
Name: Packed Column
Stationary phase: polymer beads
Granularity: 60-80 mesh
Specifications: 1m*1/8
Model: GDX-104
Name: Packed Column
Stationary phase: 10% polyethylene glycol 20M/101 white support
Granularity: 60-80 mesh
Specifications: 2m*1/8
Model: 10%PEG-20M/101
Name: Packed Column
Stationary phase: 10% dimethylpolysiloxane/101 white support
Granularity: 60-80 mesh
Specifications: 2m*1/8
Model: 10%SE30/101
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