为探讨一种科学的鉴别卷烟真假的方法,本文采用d/8度积分球分光光度仪,D65国际人工日光光源,色温为6500K,CIE规定的10°观察视觉,测量孔径3.5 mm,检测包装条码空白区域光油CIELAB空间L*、a*、b*值,利用欧式距离-最近邻元素方法对样本进行系统聚类分析.结果显示,红塔山(软经典)真假鉴别准确率为100％.由此可见,本文所建立的方法简单可靠,可做为卷烟真假鉴定的有效实验方法和依据.

建立了一种考虑输入量相关性的卷烟含末率测量、计算的方法,并对调节大气造成的不确定度做出了新的测量与计算.

本文使用ICP-MS测定烤烟样品中硒元素含量,分别采用外标法和在线内标法两种定量方法,比较不同定量方法和不同内标选择对测量结果准确度和精密度的影响,影响程度采用假设检验和相对不确定度进行量化.结果表明,为保证检测准确度应选择与待测元素质量数接近的内标元素;同时,内标法可以有效抑制和消除基体效应对测试结果的影响,提升检测精密度.

Volatile flavor components of Rosa sterilis dregs was analyzed by SDE/GC-MS,72 compounds were identified.The main component is Ethyl stearate (15.03％),Ethyl Heptadecanoate (6.86％),and 2-methyl butanol (6.30％).There are 13 alcohol compounds such as 2-methylbutanol (6.30％),isopentanol (3.85％),2-Hydroxyheptane (3.70％);nine aldehydes and ketones compounds including β-cyclohomocitral (2.67％),phenylacetaldehyde (0.58％),furfural (0.29％);17 kinds of acid compounds including octanoic acid (3.76％),octadecanoic acid (1.84％),isovaleric acid (0.37％),and there are also 33 Phenolic compounds,esters compounds and alkene compounds.The study provides a reference for further study and the usage of Rosa sterilis dregs.