相关实验视频

Updated: Jul 8, 2026

Extraction and Analysis of Microbial Phospholipid Fatty Acids in Soils

Extraction and Analysis of Microbial Phospholipid Fatty Acids in Soils

Published on: August 26, 2016

PFAS在土壤中的分布模式和影响因素:一个元分析

Xin Yang¹, Chenzhuo Song¹, Mingxue Ren¹

¹State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China.

Environmental research

|May 11, 2025

概括

和多基基物质 (PFAS) 在全球土壤中普遍存在,在欧洲,美国和中国发现的度更高. 土壤特性和社会经济因素显著影响PFAS的分布和趋势.

科学领域:

环境科学环境科学
环境化学环境化学
土壤科学土壤科学

背景情况:

和多醇基物质 (PFAS) 是持久的环境污染物,在土壤中越来越多.
现有关于PFAS分布的研究主要集中在水体上,使得土壤调查有限.
了解全球土壤PFAS污染是至关重要的,因为它作为一个主要的环境储库的作用.

研究的目的:

系统地调查PFAS在土壤中的全球分布和时间趋势.
确定影响PFAS土壤污染的关键土壤特性和社会经济因素.
分析新出现的PFAS检测和流行率的区域差异.

主要方法:

从科学文献 (2006-2024) 和欧洲永久污染地图中编制的PFAS度数据.
进行了一项元分析,以评估土壤特性 (质地,有机碳,,pH) 和社会经济指标 (GDP,人口密度,工业化) 对PFAS水平的影响.
分析了主要PFAS化合物 (PFOA,PFHxS,PFOS) 的空间异质性和时间趋势,以及新出现的PFAS的区域检测频率.

主要成果:

全球土壤PFAS度显示空间异质性,欧洲,美国和中国东部的度较高 (从不可检测到1838 ng/g).
在2005年至2019年期间,PFAS度 (PFOA,PFHxS,PFOS) 在全球范围内普遍下降,与中国相比,美国的下降幅度更大.
土壤特性和社会经济因素被确定为PFAS分布的重要驱动因素,而新兴的PFAS则表现出明显的区域流行模式.

结论:

本研究提供了全球PFAS土壤污染现状的全面概述.
确定了影响PFAS分配的关键因素,有助于有针对性的研究和管理策略.
强调需要加强PFAS土壤污染监测,特别是在研究不足的地区和高污染地区.

关键词:

进行元分析分析.在PFAS中,有很多方法.社会经济因素社会经济因素土壤的特性土壤的特性空间分布的空间分布时间变化时间变化.

更多相关视频

Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow

Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow

Published on: April 18, 2019

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Published on: September 28, 2022

相关概念视频

Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs

Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs

A drug's physicochemical properties fundamentally influence its metabolism. For instance, a drug's molecular size and shape critically determine its interaction with enzymes and transporters — larger drugs may face difficulty reaching enzyme active sites, altering their metabolic pathways. The pKa of a drug, which establishes its ionization state, can impact its solubility and absorption, thereby influencing metabolism.
The drug's acidity or basicity is essential in determining the metabolic...

Microbial Bioremediation of Pesticides

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...