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纸质包装材料中甲醛、乙醛向食品模拟物改性聚苯醚的迁移行为 被引量:6

Kinetic Migration Behaviors of Formaldehyde and Acetaldehyde from Paper Packaging Materials into Food Stimulant Tenax
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摘要 为了解纸质包装材料中甲醛、乙醛向食品模拟物改性聚苯醚( Tenax)中的迁移行为,建立了一步提取衍生化、超高效液相色谱测定纸质包装材料和Tenax中的甲醛和乙醛的方法。本方法在甲醛和乙醛的测定范围内,线性相关系数R2〉0.9999,甲醛检出限为0.03 mg/m2,乙醛检出限为0.04 mg/m2,测定纸样和Tenax的加标回收率为90.1%-108.6%。采用本方法研究不同温度和时间下两种纸质包装材料中甲醛、乙醛向Tenax中的迁移规律。研究表明,甲醛、乙醛迁移行为随时间变化趋势大致相同,均呈现迁移率随迁移时间延长先迅速增大,后又减小达到一个常数;甲醛和乙醛迁移率受温度的影响不同,达到平衡后,甲醛在30℃下迁移率最高,乙醛在70℃和50℃下迁移率高;甲醛和乙醛向Tenax中的迁移率差异较大,达到平衡后,乙醛的迁移率远高于甲醛。 The migration of two potential contaminants, formaldehyde and acetaldehyde, from two paper materials into food simulant Tenax was studied. A rapid and simple one-step extraction-derivatization method combined with ultra high performance liquid chromatography was established for the determination of formaldehyde and acetaldehyde in paper packaging materials and food stimulants. The linear correlation coefficients (R2) were greater than 0. 9999 in the range of 0. 14-35. 7 mg/m2 for both formaldehyde and 0. 20-49. 1 mg/m2 for acetaldehyde, with detection limits of 0. 03 mg/m2 for formaldehyde and 0. 04 mg/m2 for acetaldehyde. The recoveries were 90. 1%-108. 6% for paper sample and Tenax. The migration behaviors of formaldehyde and acetaldehyde at different temperatures and migration times were investigated. Both for formaldehyde and acetaldehyde, the amount of migration gradually increased with time first, then decreased, finally reached a steady value. The migration rates of formaldehyde and acetaldehyde were differently influenced by temperature. After reaching a steady value, the maximum migration rate for formaldehyde was at 30℃, and for acetaldehyde was at 70℃ and 50℃. The migration rates of formaldehyde and acetaldehyde greatly varied, and the migration rate of acetaldehyde was far more than the migration rate of formaldehyde when reaching a steady value.
出处 《分析化学》 SCIE EI CAS CSCD 北大核心 2015年第7期1092-1097,共6页 Chinese Journal of Analytical Chemistry
基金 云南中烟工业有限责任公司科技开发项目资助(No.2015JC06)~~
关键词 甲醛 乙醛 改性聚苯醚 迁移 纸质包装材料 Formaldehyde Acetaldehyde Tenax Migration Paper packaging materials
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