在西北斯皮茨伯根雪地出现的新兴北极关注的化学物质:分布和来源
Marianna D'Amico1, Roland Kallenborn2, Federico Scoto3
1Department of Environmental Sciences, Informatics and Statistics (DAIS), Ca' Foscari University of Venice, Via Torino 155, 30172 Venezia-Mestre, Venice, Italy.
The Science of the total environment
|November 8, 2023
概括
个人护理产品中的化学物质被发现在北极雪中,甚至远离定居点. 远程运输影响了它们的分布,凸显了对它们对环境影响的进一步研究的需要.
科学领域:
- 环境化学环境化学
- 北极研究研究北极研究
- 大气科学 大气科学
背景情况:
- 个人护理产品 (PCP) 含有新兴关注的化学物质 (CEAC).
- 北极雪地是监测污染物的敏感环境区.
- 了解PC-CEACs的分布对于评估北极生态系统健康至关重要.
研究的目的:
- 研究13种常见的PC-CEAC在北极雪中的空间和季节分布.
- 确定这些化学品的潜在来源和沉积过程.
- 评估远程大气运输对污染物水平的影响.
主要方法:
- 在使用GC-MS/MS的雪样中分析了13种PC-CEAC (香料材料,紫外线过器,BHT,BPA).
- 使用HYSPLIT模型模拟大气运输和分散.
- 研究颗粒物和溶解相之间的化学分离.
主要成果:
- 所有13个目标化合物都在斯瓦尔巴德斯皮茨伯根西北部的雪中被检测到.
- 一些化合物首次在斯瓦尔巴德雪中被检测到.
- 化学度因高度而异,并表现出不同的分区行为.
- 长距离大气传输被确定为影响冬季积雪度的重要因素.
结论:
- 在北极积雪区,PC-CEAC分布广泛,来源于当地和远程来源.
- 物理化学特性影响这些污染物的运输和沉积.
- 需要对CEAC的特性进行进一步的研究,以了解它们在雪融期间对北极水域的影响,特别是在气候变化下.
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