来自宾夕法尼亚州湖泊的生物源性挥发性有机化合物,在2024年藻类繁殖季节采集的样本
Christine Troller1,2, Dallan Schoenberger1,2, Richard Spear3
1Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States.
概括
淡水湖中的有害藻类繁殖会释放出大量含的生物性挥发性有机化合物 (BVOC). 这些排放,包括氨和,影响大气化学和空气质量,需要进一步研究.
科学领域:
- 环境化学环境化学
- 大气科学 大气科学
- 生态生态学 生态生态学
背景情况:
- 来自水生系统的生物性挥发性有机化合物 (BVOC) 影响大气化学.
- 淡水有害藻类繁殖 (HABs) 在全球范围内正在增加,但它们的BVOC排放量得到了很差的量化.
- 含的BVOC在大气测量中表现不足.
研究的目的:
- 在HAB期间调查淡水湖中的BVOCs的水空气气交换率.
- 量化含化合物的排放量,包括胺,罗林和氨酸.
- 提供关于HABs在淡水环境中的大气影响的见解.
主要方法:
- 在高峰HAB条件下采集了18个淡水湖水样本.
- 利用大气压,化学电离质谱仪 (CIMS) 进行实时流量测量.
- 测量了900个独特的质量,专注于含的BVOCs.
主要成果:
- 氨,烯和二烯显示出最高的排放流量.
- 首次报告了对基胺,罗林和氨酸的实时淡水流量测量.
- 在BVOC流量和叶绿素a/植物素度之间没有明确的相关性.
结论:
- 淡水HAB会释放出大量含的BVOC,影响大气化学.
- 排放可能会受到超出蓝菌度的因素的影响.
- 这些发现为了解淡水BVOC对空气质量的贡献提供了基础数据.
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