N-nitrosodimethylamine formation during oxidation of N,N-dimethylhydrazine compounds by peroxymonosulfate: Kinetics, reactive species, mechanism and influencing factors

Autor: Linlu, Shen, Zhonglin, Chen, Jing, Kang, Pengwei, Yan, Jimin, Shen, Binyuan, Wang, Shengxin, Zhao, Lanbo, Bi, Shuyu, Wang, Yizhen, Cheng
Rok vydání: 2022
Předmět:
Zdroj: Journal of Hazardous Materials. 428:128191
ISSN: 0304-3894
DOI: 10.1016/j.jhazmat.2021.128191
Popis: This study found that peroxymonosulfate (PMS) oxidation without activation has the potential to generate a suspected human carcinogen, N-nitrosodimethylamine (NDMA), in water containing N,N-dimethylhydrazine compounds. Considerable amounts of NDMA formed from three compounds by PMS oxidation were observed. 1,1,1',1'-Tetramethyl-4,4'-(methylene-di-p-phenylene) disemicarbazide (TMDS), which is an industrial antiyellowing agent and light stabilizer, was used as a representative to elucidate the kinetics, transformation products, mechanism and NDMA formation pathways of PMS oxidation. TMDS degradation and NDMA formation involved direct PMS oxidation and singlet oxygen (
Databáze: OpenAIRE