红外光谱法快速鉴别食品用塑料包装袋材料

生活中人们仅从外观上很难鉴别食品用塑料包装袋的材料。试验利用红外光谱法对食品用塑料包装袋样品的材料进行快速鉴别。试验过程中检测得到两种食品用塑料包装袋(PP、PVC)的红外光谱图,通过与标准谱图进行对照,明确了各自主要特征峰的归属,对两种食品用塑料包装袋材料进行了定性鉴别。结果表明,红外光谱法对于分析食品用塑料包装袋样品材料,测试时间短、样品用量少,而且不消耗检材,试验结果准确可靠,是对市场上食品用塑料包装袋材料进行快速定性鉴别的理想方法之一。

Identification of Plastic Food-packaging Bags Material with Infrared Spectroscopy

For all kinds of plastic food-packaging bags,it is difficult to distinguish only from appearance. This test studies the identification method for plastic food-packaging bags by infrared spectroscopy.The results indicate that this method has some advantages such as short test time,demand for small samples,not expenda-ble samples,accurate and reliable experimental results.