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Emerging Amines reshape the paradigm of urban atmospheric particle formation

新興アミンが都市大気粒子形成のパラダイムを変える (AI 翻訳)

Yongjian Lian, Xurong Bai, Ruoying Yuan, Wenli Xu, Hongjun Mao, Jianfei Peng, Shuai Jiang

arXivプレプリント2026-05-25#CCUSOrigin: CN
原典: https://arxiv.org/abs/2605.25795
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🤖 gxceed AI 要約

日本語

本研究は、CO2回収プロセスで使用されるアミン（MEA、PZ、DEA、MDEA）が都市部の新粒子形成（NPF）に及ぼす影響を評価。従来のジメチルアミン（DMA）中心のパラダイムに代わり、特にDEAとPZが汚染条件下でNPFを支配する可能性を示した。大気汚染と炭素削減の同時対策の文脈で重要性が増す。

English

This study evaluates the role of amines from carbon capture (MEA, PZ, DEA, MDEA) in urban new particle formation (NPF). It shows that DEA and PZ can dominate NPF under polluted conditions, challenging the conventional DMA-centric paradigm. The findings highlight the need to consider CCUS emissions in co-control policies for air pollution and carbon reduction.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

本研究成果は、CCUS由来のアミンが都市大気粒子形成を促進する可能性を示しており、日本のCCUS推進政策において副次影響の考慮を促す。

In the global GX context

This study re-evaluates urban nucleation paradigms by highlighting the role of emerging amines from carbon capture, implying that large-scale CCUS deployment could alter urban air quality, necessitating integrated assessment in GX planning.

👥 読者別の含意

🔬研究者:Provides a new mechanism linking CCUS emissions to aerosol formation, warranting further field studies.

🏢実務担当者:Carbon capture operators should monitor amine emissions to assess potential atmospheric impacts.

🏛政策担当者:Co-control policies must account for unintended effects of amines from CCUS on urban air quality.

📄 Abstract（原文）

New particle formation (NPF) contributes to more than half of global aerosol number concentrations, with profound implications for human health and climate change. Observational studies have shown that the frequency of NPF events in urban Beijing during summer exceeds the global average. The prevailing paradigm attributes urban NPF primarily to sulfuric acid-base nucleation involving dimethylamine (DMA). However, recent field measurements in summer urban Beijing have identified several emerging amines emitted from carbon capture processes, including monoethanolamine (MEA), piperazine (PZ), diethanolamine (DEA) and N-methyldiethanolamine (MDEA), in addition to DMA. Here, we systematically evaluate the contributions of sulfuric acid-amine nucleation pathways to urban NPF. We found that emerging amines particularly DEA and PZ, can dominate nucleation pathways under polluted urban conditions, surpassing the contribution of DMA. These findings suggest that the current universal paradigm of urban nucleation should be revisited to explicitly account for the role of emerging amines. Moreover, emerging amine-mediated NPF will become increasingly important in the context of future co-control policies for air pollution and carbon reduction.

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