用 Hβ 沸石在溶液中高效捕获烟草特异性亚硝胺。
Efficiently capturing tobacco specific nitrosamines with Hβ zeolite in solution.
机构信息
Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Shanghai New Tobacco Product Research Institute, Shanghai 200082, China.
出版信息
J Hazard Mater. 2019 Mar 5;365:196-204. doi: 10.1016/j.jhazmat.2018.10.095. Epub 2018 Nov 1.
The high-efficiency capture of Tobacco Specific Nitrosamines by Hβ zeolite in solution is reported for the first time, along with the adsorption of 4-methylnitrosamino-1-3-pyridyl-1-butanone in aqueous solution. Different from other zeolites such as NaZSM-5, the specific pore size of Hβ exerted a crucial function endowing the zeolite a higher removal of TSNA and selectivity of NNK. The adsorption thermodynamics of NNK by Hβ in aqueous adsorption was fitted to Temkin adsorption model with a linearly decreasing isosteric heat of adsorption. In addition, the adsorptive capacity of Hβ zeolite for NNK reached over 70 mg g offering a powerful sorbent of TSNA to protect environment.
首次报道了β沸石在溶液中对烟草特有亚硝胺的高效捕获，以及在水溶液中对 4-甲基亚硝胺-1-(3-吡啶基)-1-丁酮的吸附。与其他沸石如 NaZSM-5 不同，β沸石的特殊孔径起着至关重要的作用，赋予了沸石更高的 TSNA 去除率和 NNK 的选择性。β沸石在水溶液中的吸附热力学符合 Temkin 吸附模型，吸附热呈线性下降。此外，β沸石对 NNK 的吸附容量超过 70mg/g，为保护环境提供了一种强有力的 TSNA 吸附剂。
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