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Published on: April 15, 2022
Efficiently capturing tobacco specific nitrosamines with Hβ zeolite in solution
Chun Ling Shi1, Xiao Dan Sun1, Yi Han Gao2
1Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Abstract:
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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