随着气味:通过大麻生命周期的烯排放概况
Davi de Ferreyro Monticelli1, Cynthia Pham2, Sahil Bhandari2,3
1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada. nzimmerman@mech.ubc.ca.
Environmental science. Processes & impacts
|June 18, 2025
概括
大麻种植会释放诸如烯之类的挥发性有机化合物 (VOC),影响空气质量. 这项研究量化了这些排放,发现在修剪等活动中存在显著的变化,这可能会导致气味问题.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 工业生态学 工业生态学
背景情况:
- 大麻种植和加工是不断增长的行业,有助于空气污染,特别是臭臭的挥发性有机化合物 (VOC).
- 关于这些挥发性有机化合物的精确排放率和化学成分,现有知识缺口存在,导致空气质量评估中的潜在低估或高估.
- 加拿大不列颠哥伦比亚省下弗雷泽河谷面临着现有的气味来源和夏季臭氧峰值的挑战,这些挑战被挥发性有机化合物 (VOC) 和氧化 (NOx) 不平衡所加剧.
研究的目的:
- 为量化室内大麻种植和加工设施的烯排放量.
- 评估烯度在不同操作活动和照明条件中的变化.
- 为了评估大麻烯排放在夏季高峰条件下的潜在气味影响.
主要方法:
- 开发了一个自动气相色谱协议来测量22个关键的大麻烯.
- 从室内种植设施的八个房间和加工/提取设施的六个房间抽取空气样本.
- 在各种排放场景下进行了beta-myrcene的选分散建模,以评估各种排放场景下的气味影响.
主要成果:
- 排放率差异很大 (1.05 × 10-3>到3.09 × 10-1 kg h-1>),其中最大的排放量是在芽修剪期间.
- 观察到烯度的显著时间变化 (高达1500%的波动),取决于活动和照明.
- 分散建模表明,平均和峰值排放可以超过气味值,其中88和241种情景分别超过限值.
结论:
- 描述烯排放的时间和化学概况对于准确评估大麻设施中的空气污染和气味影响至关重要.
- 排放的显著变化凸显了对特定活动减排策略的需求.
- 调查结果为决策者,科学家和行业利益相关者提供了必要的数据,以便为不断增长的大麻行业制定有效的环境法规和气味减轻策略.
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