论文部分内容阅读
炼油厂生产的出口石蜡或食品工业用石蜡,都要对石蜡中稠环芳烃组分含量进行分析。按测定方法规定对所用异辛烷试剂的纯度要求很高,需净化处理,紫外消光系数测定合格后,才能用作分析试剂。我们对异辛烷的净化及净化后紫外消光系数测定这两个过程作了一些改进。效果良好,既能保证试剂质量,又可常省用量,简化了测定紫外消光系数前的蒸发浓缩过程,减少了对大气的污染。
Export paraffin wax produced by the refinery or paraffin waxes for the food industry should analyze the content of PAHs in the paraffin wax. According to the determination of the method of iso-octane reagent used in the purity of the very high, to be purified, the UV extinction coefficient measured in order to be used as analytical reagents. We made some improvements on both the purification of isooctane and the determination of UV extinction coefficient after purification. Good effect, both to ensure the quality of reagents, but also the amount of regular provinces, simplifying the determination of UV extinction coefficient before the evaporation process to reduce the pollution of the atmosphere.