| 摘要: |
| 目的 建立同时测定食品包装材料中32种挥发性有机化合物（VOCs）的气相色谱-质谱检测方法。方法 设定平衡温度和时间分别为100 ℃和30 min，色谱柱为HP-VOC，载气为氦气，流速为2.0 mL/min，不分流进样，进样口温度为250 ℃，柱温为程序升温。质谱采用电子轰击电离方式，电子轰击能为70 eV，定性分析采用SIM模式，定量分析采用外标法。结果 方法检出限在0.01～0.17 mg/m2的范围内，相关系数＞0.99，样品加标回收率为90.3%～109.9%，相对标准偏差为1.1%～8.9%（n=6）。结论 该方法适用于食品包装材料中挥发性有机化合物的测试。 |
| 关键词: 食品包装材料 挥发性有机化合物 气相-质谱联用仪 顶空进样 |
| DOI： |
| 分类号:TB484 |
| 基金项目: |
|
| Determination of VOCs in Food Packaging Materials by GC-MS |
|
NAN Yang, DU Yue, LI Chang-xing
|
|
China Packaging Research & Test Center, Tianjin 300457, China
|
| Abstract: |
| The work aims to establish a gas chromatography-mass spectrometry (GC-MS) detection method for the simultaneous determination of 32 volatile organic compounds (VOCs) in food packaging materials. The equilibrium temperature and time selected were respectively 100 ℃ and 30 min. The determination was performed on HP-VOC column at the flow rate of 2.0 mL/min with helium as carrier gas. The sample was splitless sampling. Injector temperature was 250 ℃ by temperature programming. Electron impact ionization mode was used with electron impact energy of 70 eV. SIM was adopted for qualitative analysis. The ESTD method was used for quantitative analysis. The detection limit of this method was 0.01~0.17 mg/m2. The relative coefficient was more than 0.99. The sample added recovery was between 90.3% and 109.9%. RSD was between 1.1% and 8.9% (n=6). The proposed method is suitable for the determination of VOCs in food packaging materials. |
| Key words: food packaging materials VOCs GC-MS headspace injection |
