自然存在的地表水泡作为PFAS采样矩阵
Donovan S Vitale1, Donald M Reeves1, Ethan S Coffin1
1Department of Geological and Environmental Sciences, Western Michigan University, 1903 W. Michigan Ave, Kalamazoo, MI 49008-5241, USA.
Journal of hazardous materials
|August 7, 2025
概括
表面水泡 (SWF) 捕获了比单独的表面水更广泛的和多基物质 (PFAS). 干泡集中了超长链PFAS,为环境监测提供了有价值的补充采样方法.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 水质监测 水质监测
背景情况:
- 和多基基物质 (PFAS) 是持久的环境污染物.
- 了解 PFAS 在水生生态系统中的分布对于风险评估至关重要.
- 表面水泡 (SWF) 代表了一个独特的环境矩阵,有可能积累特定的PFAS.
研究的目的:
- 调查表面水泡 (SWF) 和表面水 (SW) 中的PFAS的存在和组成.
- 为了比较SWF和SW之间的PFAS度和配置文件.
- 为了区分湿和干SWF之间的PFAS组成,并提出一个老化模型.
主要方法:
- 从密歇根州六个地点采集SWF和SW样本,使用一种新型设备.
- 使用先进的分析技术量化41种PFAS化合物.
- 统计分析包括主要组件和集群分析.
主要成果:
- 在所有SWF样本中检测到PFAS,其度明显高于SW.
- SWF样本显示富含高分子体积和中等分子体积的PFAS,包括超长链变种.
- 与湿的SWF相比,干燥的SWF显示出更高的PFAS总度,并由高分子体积的PFAS主导.
结论:
- SWF是一种有价值的补充矩阵,用于检测和量化更广泛的PFAS,特别是高分子体积和中等分子体积化合物.
- 拟议的概念模型解释了SWF进化和老化过程中的PFAS组成变化.
- 这项研究强调了在环境PFAS评估中考虑SWF的重要性.
更多相关视频
09:04Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow
Published on: April 18, 2019
12.6K
07:06Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique
Published on: September 28, 2022
1.7K
相关概念视频
01:17Precipitation and Co-precipitation
4.9K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
4.9K
01:18Sampling Methods: Sample Types
3.4K
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
3.4K