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通过同位素追踪和光谱分析从水剂中诱导的N-二甲基胺形成的探索

Guodong Yang1, Dong An2, Yunkun Qian3

  • 1Department of Environmental Science & Engineering, Fudan University, Shanghai 200238, PR China; School of Civil Engineering, Hexi University, Zhangye 734000, PR China.

Water research
|December 21, 2025
PubMed
概括

在水处理过程中,聚二甲基化物 (polyDADMAC) 和聚烯胺 (PAM) 可以形成N-二甲基 (NDMA). 这项研究揭示了分子通路,将单胺确定为酸盐组来源,并将花作为氨基组来源.

关键词:
胺化是一种化.这是一种N-二甲基胺 (nitrosodimethylamine).在 PolyDADMAC 中使用.聚烯胺是多烯胺的一种.

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2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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