顶空气相色谱法测定烟用商标溶剂型油墨中溶剂残留

Determination of Residual Solvents in Solvent Based Printing Ink for Cigarette Trade Mark by Head Space-Gas Chromatography

为测定烟用商标印刷用溶剂型油墨中的溶剂残留量(或称为挥发性有机化合物,VOCs),建立了烟用包装材料(包括条盒商标、小盒商标和接装纸等)印刷用溶剂型油墨中溶剂残留量的测定方法。将油墨试样制成一定面积、厚度的油墨印样,制样后,悬空放置在一定温度(25±1)℃、相对湿度(65±5)%实验室内一定的时间(2 h),然后装入密封的顶空瓶中,再在设定的时间(45 min)和温度(80℃)条件下,将油墨印样表面的溶剂挥发,达到平衡后,取瓶内顶部气体进行顶空气相色谱测定,以毫克每平方米(mg/m2)表示。该方法前处理快速、简单,样品使用量较少,灵敏度高、重现性较好(RSD<2%),用此方法进行溶剂型油墨样品的测定,结果满意。

In order to determine the residual solvents （or called volatile organic compounds, VOCs） in solvent based printing ink for cigarette trade mark （including cigarette packaging materials carton packets, packaging and tipping paper and etc.）, a new head space-gas chromatographic method was established. The printing ink test sample of a given area and thickness was made, then hanged 1）℃ and relative humidity （65 ＋ 5）% for 2 h. The sample capped tightly and heated 45 min at 80℃. After gas-solid in a laboratory with given temperature （25 ± was packed into a head-space bottle which was equilibrium, the volatile gas part was injected into head space-gas chromatography and determined. The calculating result was represented in mg/m^2. This method is rapid, simple, and with high sensitivity and well repeatability （RSD〈2%）. It can be applied to determine the residual solvents in solvent based printing ink for cigarette trade mark with good results.