农村北中国平原的过氧乙酸盐 (PAN) 的特征和来源:从一年的连续观测结果

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Xin Liu1, Xiaowei He1, Chenglong Zhang1

  • 1Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of environmental sciences (China)
|December 22, 2023
PubMed
概括

农村北中国平原的氧酸 (PAN) 污染显示出明显的季节性模式. 区域运输对PAN水平产生重大影响,特别是在冬季的污染事件中,来自春季的河北南部和冬季的北京-天津-河北地区.

关键词:
过氧乙酸 (PAN) 是一种摄影化学污染 摄影化学污染区域运输 区域运输 区域运输农村地区的农村地区.季节性变化 季节性变化

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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.