title: Adsorption of nitrosamines in acidic solution by zeolites.
abstract: Adsorption of N-nitrosopyrrolidine (NPYR) by zeolite NaZSM-5, Hbeta and NaZSM-11 in acidic solution with pH of 1 was investigated. The NPYR uptake process obeyed the first-rate Lagegren kinetic equation describing adsorption, and the equilibrium data were fitted to the Langmuir or Freundlich adsorption equation. Zeolite ZSM-5, Hbeta and NaZSM-11 possessed a higher adsorption capacity than amorphous silica or ordered mesoporous siliceous SBA-15, implying their potential application for adsorption of nitrosamines in gastric juice to anti-cancer.
authors.affiliation: Department of Chemistry, Nanjing University, Nanjing 210093, China.
authors.forename: Chun Fang
authors.initials: CF
authors.lastname: Zhou
authors.forename: Jian Hua
authors.initials: JH
authors.lastname: Zhu
mesh_terms: D000327:Adsorption; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009602:Nitrosamines / Q000737:chemistry*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D009602:Nitrosamines; D017641:Zeolites