PVC/PE液体复合硬片中HDI单体残留量考察

Study on HDI monomer residue of PVC/PE liquid composite film

目的：检测样品中使用的粘合剂中HDI单体残留量。方法：样品提取后,与1,2-吡啶哌嗪溶液衍生化后采用反相高效液相色谱法测定。色谱柱：Waers Xterra（C184.6×250 mm5μm;流动相：乙腈-水-冰醋酸（58∶42∶0.15）用三乙胺调节pH至4.0;流速：0.9 ml·min^-1;柱温：35℃;检测波长：310nm。结果：线性范围0-0.8208μg·ml^-1（r=0.9998,n=7）;精密度：0.4%;阴性回收率平均值：99.88%。结论：本方法专属性强、灵敏度高、准确、可靠、简便,可用于HDI残留量检测。

Objective： To test the HDI monomer residue of the adhesive used in the samples.Methods： The sample was extracted and derivatived with 1,2-pyridyl piperazine,then tested with RP-HPLC.Column： Waers Xterra C18 4.6×250mm 5μm.Mobile Phase： acetonitrile-water-acetic acid（58∶42∶0.15） adjusted with triethylamine to pH 4.0.Flow rate： 0.9ml·min^-1.Column temperature： 35℃.Detection wavelength： 310nm.Results： The linear range is 0 - 0.8208μg·ml^-1（r=0.9998,n=7）.Precision： 0.4%.Average of negative recovery： 99.88%.Conclusion： This method is specific,sensitive,accurate,reliable,simple and can be used for testing HDI residue.