Determination of 1-naphthylamine by using oscillating chemical reaction.
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.
Gao
Jinzhang
J
College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China. jzgao@nwnu.edu.cn
Wei
Xiaoxia
X
Yang
Wu
W
Lv
Dongyu
D
Qu
Jie
J
Chen
Hua
H
Dai
Hongxia
H
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
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