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食品级二氧化碳中痕量苯测定气相色谱仪
食品级二氧化碳中痕量苯测定气相色谱仪 详细信息：

食品添加剂二氧化碳长期以来被广泛用于各种碳酸饮料,烟丝膨化,食品保鲜等领域,其质量优劣与人们健康息息相关.我国目前还不具备用于该产品质量监控的国家级标准物质,因此建立和完善食品添加剂二氧化碳痕量组分检测用标准物质及权威检测方法已刻不容缓.

根据国家标准GB10621-2006《食品添加剂液体二氧化碳》的要求,对苯的限量要求≤20ppb,标准方法规定是采用取样3～5mL直接进样法,这就对仪器FID检测器的灵敏度要求较高,而市场上现有国产化仪器,往往因灵敏度达不到要求而无法检测。

浩瀚色谱（山东）应用技术开发有限公司采用特殊填料填充的色谱柱,以灵敏度氢火焰离子化痕量气体分析仪,通过直接进样的方式分析气体中痕量苯的方法。通过多次实验对该仪器的分析条件进行优化筛选,从而达到满足食品级二氧化碳中对苯的控制指标要求。该实验方法稳定、操作简单、检测限可达5×10-9。

食品级二氧化碳中痕量苯测定气相色谱仪  测试谱图：



Gas chromatograph for the determination of trace benzene in food-grade carbon dioxide
Gas chromatograph for the determination of trace benzene in food-grade carbon dioxide

The food additive carbon dioxide has been widely used in various carbonated beverages, tobacco puffing, food preservation and other fields for a long time. Its quality is closely related to people's health. my country currently does not have a national standard material for the quality control of this product, so it is established It is urgent to improve the standard materials and authoritative testing methods for the detection of trace components of carbon dioxide in food additives.


According to the requirements of the national standard GB10621-2006 "Food Additive Liquid Carbon Dioxide", the limit requirement for benzene is ≤20ppb. The standard method stipulates that the direct injection method of sampling 3~5mL is adopted, which requires high sensitivity of the instrument FID detector. However, the existing domestically produced instruments on the market are often unable to detect because the sensitivity is not up to the requirement.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. adopts a chromatographic column filled with special fillers, and uses an ultra-high sensitivity hydrogen flame ionization trace gas analyzer to analyze trace benzene in the gas by direct sampling. Through many experiments, the analysis conditions of the instrument were optimized and screened, so as to meet the requirements of the control index of benzene in food-grade carbon dioxide. The experimental method is stable, reliable, simple to operate, and the detection limit can reach 5×10-9.

Determination of trace benzene in food-grade carbon dioxide gas chromatograph test spectrum: