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Capturing Nitrosamines in Environment by Zeolite

机译：用沸石捕获环境中的亚硝胺

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摘要

To meet the requirement of environment protection, the adsorption of volatile nitrosamines, which are carcinogenic compounds in tobacco smoke, by zeolite is investigated in this article, along with the temperature programmed surface reaction of nitrosamines on zeolite to assess the catalytic capability of the porous material on the decomposition of the carcinogens. The actual function of zeolite to reduce the level of nitrosamines in cigarette smoke is also studied. The influences of zeolite pore's structure and the surface acid-basic properties of the adsorbent on the adsorption are explored in terms of geometric matching content and adsorbent-adsorbate interaction. Moreover, the role played by the cation of zeolite in the adsorption of volatile nitrosamines is discussed and the possible attracting range of the sodium cation in basic zeolite to pull the nitrosamine molecule is tentatively calculated. Owing to the specific ability of capturing nitrosamines, zeolite is proven to be the most effective additive encased within a cigarette as the functional additive for lowering the nitrosamines content of smoke to protect the environment and public health. Other porous oxides such as amorphous silica and alumina are also utilized in these experiments, and their actual functions to trap nitrosamines as well as their potential application as the candidates for cigarette additives are discussed and prospected, too.
机译：为了满足环境保护的要求，本文研究了沸石对烟草烟雾中致癌化合物挥发性亚硝胺的吸附作用，以及亚硝胺在沸石上的程序升温表面反应，以评估多孔材料的催化能力。对致癌物的分解。还研究了沸石降低香烟烟雾中亚硝胺水平的实际功能。从几何匹配含量和吸附剂与被吸附物的相互作用方面探讨了沸石孔结构和吸附剂的表面酸碱性质对吸附的影响。此外，讨论了沸石阳离子在挥发性亚硝胺的吸附中所起的作用，并初步计算了钠阳离子在碱性沸石中吸引亚硝胺分子的可能吸附范围。由于具有特定的捕获亚硝胺的能力，沸石被证明是卷烟中最有效的添加剂，它是降低烟雾中亚硝胺含量，保护环境和公众健康的功能性添加剂。在这些实验中还使用了其他多孔氧化物，例如无定形二氧化硅和氧化铝，并且它们的捕获亚硝胺的实际功能以及它们作为卷烟添加剂候选物的潜在用途也得到了讨论和展望。

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