title: Determination of 1-naphthylamine by using oscillating chemical reaction.
abstract: A simple and rapid analytical method for determining 1-naphthylamine was proposed by perturbation with different amounts of 1-naphthylamine on the classical Belousov-Zhabotinskii (B-Z) oscillating chemical system. The results show that the changes both in oscillating period and amplitude were linearly proportional to the logarithm of the concentration of 1-naphthylamine (logC) very well ranging from 7.08x10(-5) to 7.08x10(-6) molL(-1) and 7.08x10(-5) to 1.0x10(-6) molL(-1), with the corresponding regression coefficient are 0.9957 and 0.9922, respectively. For the later, a lower detection limit of 5.64x10(-9) molL(-1) was obtained. Influence of injection point, temperature and reactant variables on this oscillating system was also investigated in detailed. The results obtained were compared with other determination methods. A possible reaction mechanism was interpreted by using bromide ion selective electrode to inspect the concentration change of Br(-) ion in the oscillating process.
authors.affiliation: College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China. jzgao@nwnu.edu.cn
authors.forename: Jinzhang
authors.initials: J
authors.lastname: Gao
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Wei
authors.forename: Wu
authors.initials: W
authors.lastname: Yang
authors.forename: Dongyu
authors.initials: D
authors.lastname: Lv
authors.forename: Jie
authors.initials: J
authors.lastname: Qu
authors.forename: Hua
authors.initials: H
authors.lastname: Chen
authors.forename: Hongxia
authors.initials: H
authors.lastname: Dai
mesh_terms: D015057:1-Naphthylamine / Q000032:analysis* / Q000737:chemistry; D001959:Bromates / Q000737:chemistry; D002563:Cerium / Q000737:chemistry; D008314:Malonates / Q000737:chemistry; D015203:Reproducibility of Results; D013464:Sulfuric Acids / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D001959:Bromates; D008314:Malonates; D013464:Sulfuric Acids; D014874:Water Pollutants, Chemical; C019536:potassium bromate; D002563:Cerium; D015057:1-Naphthylamine; C030290:malonic acid; C033158:sulfuric acid