反应分解法-气相色谱-质谱联用法测定具色泡沫网套及其色母粒中偶氮染料的迁移行为

Study on the azo dye migration of bubble net with color and color masterbatches by reaction decomposition gas chromatography-mass spectrometry

中文关键词:  具色泡沫网套  色母粒  偶氮染料  芳香胺  气相色谱-质谱联用法  迁移量

英文关键词:bubble net with color  masterbatches  azo dye  aromatic amines  gas chromatography-mass spectrometry  migration quantity

中文摘要:

      目的 建立反应分解法-气相色谱-质谱联用法(gas chromatography-mass spectrometry, GC-MS)测定具色泡沫网套食品接触材料中偶氮染料迁移的测定方法。方法 采用水、4%(V/V)乙酸、50%(V/V)乙醇、异丙醇作为食品模拟物, 样品在食品模拟液中40 ℃浸泡10 d。研究了具色泡沫网套及其色母粒中偶氮染料迁移的条件, 反应剂用量与反应、色谱和质谱条件进行了优化。结果 在优化实验条件下, 23种芳香胺在0.1~10 mg/L质量浓度范围内线性良好, 相关系数(r2)均大于0.999, 方法的检出限为0.0003~0.001 mg/L, 定量限为0.001~0.010 mg/L, 在50%乙醇和异丙醇模拟物中, 3个加标回收率为84.9%~105.1%, 相对标准偏差小于5%。结论 该法准确、可靠、灵敏度高能满足实际工作的要求, 适用于食品接触材料中偶氮染料迁移的测定。

英文摘要:

      Objective To establish a method for the simultaneous determination azo dye migration of bubble net with color and color masterbatches by reaction decomposition method-gas chromatography-mass spectrometry (GC-MS). Methods The water, 4% (V/V) aqueous acetic acid, 50% (V/V) aqueous ethanol and isopropanol alcohol were used as the food simulated solution. The samples were immersed in food simulant at 40 ℃ for 10 d. The migration conditions of azo dyes in color foam mesh and color masterbatches were studied. The amount of reactants and reaction conditions, chromatogram and mass spectrum conditions were optimized. Results Under optimized conditions, there were good linearities for 23 kinds of carcinogenic aromatic amines between peak areas and concentrations in the range of 0.1?10 mg/L with correlation cofficients (r2) more than 0.999. The limits of detection were 0.0003?0.001 mg/L, and the limits of quantitation were 0.001?0.010 mg/L. The recoveries at 3 spiked levels ranged from 84.9% to 105.1% in 50% aqueous ethanol and isopropanol alcohol and relative standard deviations were less than 5%. Conclusion With high sensitivity, recovery and selectivity, this method can fully meet the requirements for practical work, which is suitable for the determination of migration of phenolic antioxidants in food packaging materials.