为了研究国产和进口造纸法再造烟叶的无机添加物的成分和含量差异，采用X射线光电子能谱（X P S）对再造烟叶表面的元素组成进行分析，以获得填料和助燃剂等物质成分的信息，结果显示，所检测的国产和进口再造烟叶的填料主要是碳酸钙，助燃剂成分均为钾盐。然后分别采用化学分析方法和原子吸收光谱法准确分析再造烟叶中的总碳酸钙和水溶性钾，几种国产再造烟叶的总碳酸钙含量为3.48%～5.5%，显著低于进口产品的6.08%；而国产再造烟叶钾含量为1.71%～2.49%，进口产品钾含量为2.02%，低于大部分国产再造烟叶。采用显微镜观察分析了再造烟叶的纤维组织和分散纤维的形态。在进口样品中，宽度小于50μm、长度大于2m m的细长纤维的比例高于国产样品，宽度为200～500μm粗纤维也更为通透，说明纤维解离较好。再造烟叶中的碳酸钙含量高有助于改善片基物理性能，而解离完全的纤维更易于燃烧，使燃烧性能的改善不仅仅依赖于助燃剂的添加量。。
Analytic study on inorganic additives of domestic and imported paper-process reconstituted tobaccos
The aim of this work was to investigate the difference of composition and content of inorganic additives between the domestic and imported paper-process reconstituted tobacco (PRT). X-ray photoelectronic spectroscopy (XPS) was employed to scan the surface of a group of domestic and imported PRT in order to ifnd out the chemical constituents of the ifller and combustion improver. The results showed that all the samples contained the filler CaCO3 and burning catalytic agent sylvite. Then the total content of the CaCO3 and soluble K+ in the PRT were analyzed by chemical analysis and atomic absorption spectroscopy respectively. The results showed that the domestic PRT contained 3.48%~5.5% CaCO3, much lower than the 6.08% CaCO3 in imported PRT. The domestic PRT contained 1.71%~2.49% K+, while the imported PRT contained less K+ of 2.02%. The texture and disperse ifbers of the PRT was observed under microscope to reveal their structure and morphology. The imported PRT had more slender ifbers of 50μm in width and 2mm in length, and more transparent thick ifbers of 200~500μm in width, resulting from more dissociated ifbers. Increase of CaCO3 helps to improve the physical performance of the PRT substrate. Thoroughly dissociated ifber burns more easily, making the improvement of the burning performance not rely just on the addition of combustion improver.
NETL
NSTL
万方数据
维普
