Unverified50% confidenceFactExact time
Part of PM2.5 comes from secondary particulate matter formed through atmospheric transformation of sulfur dioxide and nitrogen oxides emitted by power generation.
1
Sources
50%
Confidence
Long-term
Relevance
10/21/2026
First Seen
Sources
Related Entities
Related Claims
Unverified航空碳排放存在辐射强迫效应，高空飞行产生的氮氧化物和凝结尾迹使实际气候影响系数约为排放CO₂的2至4倍67% similarUnverified室外新鲜空气的CO2浓度约在400-420 ppm64% similarUnverifiedCarbon dioxide and hydrogen sulfide in cave air can accumulate to dangerous concentrations in unventilated depths, and oxygen can be displaced below the 19.5% safety threshold.61% similarUnverified加州理工学院化学家阿里·哈根-斯密特通过实验证明烟雾是汽车尾气中的氮氧化物与挥发性有机物在紫外线照射下光化学反应的产物，核心污染物为臭氧61% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1082640API
curl https://kongchang.com/api/v1/knowledge/claims/1082640MCP
get_claim(id=1082640)