综合目标和可疑查工作流程,用于确定城市影响的塞尔维亚河流中关注的PFAS
Igor Antić1, Maja Buljovčić1, Richard E Cochran2
1University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia.
Toxics
|January 28, 2026
概括
这项研究评估了塞尔维亚北部的per-和多基基物质 (PFAS).
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 评估水质水质的评估.
背景情况:
- 和多醇基物质 (PFAS) 是全球发现的持久性有机污染物.
- 了解表面水中的PFAS分布对于环境和人类健康风险评估至关重要.
- 塞尔维亚北部中多河地区的地表水缺乏全面的PFAS污染数据.
研究的目的:
- 对塞尔维亚北部地表水域的PFAS进行首次全面评估.
- 用可疑查量化目标PFAS并识别未知的PFAS.
- 将污染水平与欧洲环境质量标准 (EQS) 进行比较.
主要方法:
- 使用高分辨率质谱仪对25个PFAS进行了有针对性的分析.
- 嫌疑人选分析 (SSA) 以确定更广泛的PFAS.
- 在主要河流和多河-蒂萨-多河运河网络的12个地点采样.
主要成果:
- 在PFAS度中观察到显著的空间变化,大巴卡运河显示的最高水平.
- 在24个地点中,有19个超出了对PFAS (4.4 ng/L PFOA-equivalents) 提出的欧盟团体环境质量标准.
- 在17个样本中,PFOS超过了其内陆地表水环境质量标准;TFA是SSA发现的最丰富的PFAS.
结论:
- 塞尔维亚北部的地表水域显示了广泛的PFAS污染,在大多数地点超过了欧盟的指导方针.
- 调查结果表明,短链PFAS的主导地位和分散来源的影响.
- 为了有效的PFAS管理,建议进行进一步的监测和来源识别.
相关概念视频
01:19Impact of Groups on Groups
241
Social psychologists analyze how groups influence one another, shaping social structures and interactions through both cooperation and competition. These dynamics manifest in various ways, ranging from economic partnerships to intergroup conflicts that shape societal structures and perceptions.Cooperation and Competition in Intergroup RelationsIntergroup relationships vary across contexts, sometimes fostering cooperation and mutual benefit while at other times leading to conflict and...
241
01:30Impact
490
Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
490
01:26Integration by Parts: Indefinite Integrals
160
Integration by parts is a fundamental technique in calculus for evaluating integrals involving the product of two functions. It is particularly useful when direct integration is not feasible. The method is based on the product rule for differentiation, which states that the derivative of a product equals the derivative of the first function times the second, plus the first function times the derivative of the second. By integrating this identity and rearranging terms, the integration by parts...
160
01:23Integration by Parts: Definite Integrals
72
Definite integrals involving the product of two functions over a fixed interval can be evaluated using integration by parts. This method rewrites the integral as the difference of a product evaluated at the endpoints and a remaining definite integral that is often simpler to compute.A representative example is the definite integral of the inverse tangent function. Since there is no direct integration formula for arctan x, the integrand is rewritten as a product of arctan x and the...
72
01:28Impact of Groups on Individuals
344
Groups play a fundamental role in shaping individual behavior, as they establish norms that guide interactions and decision-making. Social psychology examines how individuals conform to group expectations, often adjusting their attitudes and actions to align with group norms. These norms can be formal, such as workplace policies, or informal, such as unspoken social expectations within a fraternity.Conformity and Social InfluenceConformity arises when individuals modify their behaviors or...
344
01:25Impact of Individuals on a Group
309
In social psychology, the interplay between individuals and groups is a central concern, particularly regarding how individual actions and characteristics influence group processes and outcomes. While much research emphasizes the group's power in shaping individual behavior, it is equally significant to understand how individuals contribute to the functioning, development, and success of groups.Individual Roles in Group Productivity and Decision-MakingIndividuals are not passive participants in...
309