Core Viewpoint - The article highlights the issue of ammonia (NH3) escape in the selective non-catalytic reduction (SNCR) process for nitrogen oxides (NOx) emission control, which leads to secondary pollution and worsens air quality due to the formation of fine particulate matter (PM2.5) [1][2] Group 1: Ammonia Escape Issues - Excessive reliance on SNCR technology has resulted in ammonia escape, causing secondary pollution and contributing to PM2.5 generation [1] - Ammonia escape reduces the efficiency of denitrification systems and leads to the formation of ammonium sulfate and ammonium nitrate, which are major components of atmospheric aerosols [1] - The current SNCR process has limited denitrification efficiency and low ammonia utilization rates, prompting companies to use excessive ammonia to stabilize operational fluctuations [1] Group 2: Regulatory and Technical Recommendations - Strengthening technical support and precise investigation is essential, as ammonia escape is often overlooked due to the lack of technical expertise among regulatory personnel [2] - A shift from traditional gas-phase ammonia detection to total ammonia escape calculation is recommended to accurately identify sources of excess emissions [2] - Implementing strict penalties for exceeding ammonia escape limits while ensuring that companies take responsibility for corrective actions is crucial for effective management [3] Group 3: Collaborative Governance - Effective ammonia escape management requires collaboration across multiple departments, breaking down silos to create a coordinated mechanism [3] - The ecological environment department should facilitate data sharing for comprehensive monitoring from ammonia usage to end emissions [3] - Economic incentives, such as linking ammonia escape control levels to environmental tax reductions and green credit approvals, can encourage companies to invest in pollution control measures [3]