Efficiently capturing tobacco specific nitrosamines with Hβ zeolite in solution
2019
Shi, Chun Ling | Sun, Xiao Dan | Gao, Yi Han | Zheng, Sai Jing | Li, Shuohao | Yang, Jing | Wang, Yang Zhong | Xiong, Jun-Wei | Shen, Yi | Wang, Ying | Zhu, Jian-Hua
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⁻¹, offering a powerful sorbent of TSNA to protect environment.
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