相关实验视频

Updated: Jul 9, 2025

A Whole Cell Bioreporter Approach to Assess Transport and Bioavailability of Organic Contaminants in Water Unsaturated Systems

A Whole Cell Bioreporter Approach to Assess Transport and Bioavailability of Organic Contaminants in Water Unsaturated Systems

Published on: December 24, 2014

洞察四博二甲与沉积物衍生的溶解有机碳在多相系统中通过直接浸泡固体相微提取直接浸泡的相互作用

Xiaohui Zhu¹, Liangzhong Li², Zhenyu Lu³

¹State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.

The Science of the total environment

|December 6, 2023

概括

博二甲 (TBBPA) 是一种阻燃剂,在水生系统中吸附于沉积物. 直接浸泡固态微提取精确测量TBBPA度,纠正溶解有机碳的影响.

科学领域:

环境化学环境化学
环境科学环境科学
生态毒理学生态毒理学

背景情况:

二甲 (TBBPA) 是一种广泛使用的制阻燃剂 (BFR).
在水生环境中经常检测到TBBPA,这引起了人们对其生态影响的担忧.
有限的研究存在于沉积物溶解有机碳 (DOC) -水系统中TBBPA的环境命运.

研究的目的:

为了研究TBBPA在水-DOC-沉积物系统中的吸附行为.
为了测量自由溶解的TBBPA度 (C_w-SPME) 和DOC吸附度 (C_DOC).
评估环境因素 (pH,离子强度,可溶有机物) 对TBBPA吸附的影响.

主要方法:

使用了直接浸泡固体相微提取 (DI-SPME).
进行了吸附动力学和干扰实验.
确定了固体-水分区系数 (K_d) 和有机碳-水分区系数 (K_OC).

主要成果:

TBBPA对沉积物的吸附遵循线性模型,表明沉积物的主要吸收.
DI-SPME准确地纠正了DOC吸附,与低估K的传统方法不同.
确定LogK_d和logK_OC值分别为4.12 ± 0.25和6.48 ± 0.25的值.
TBBPA的吸附受pH值,离子强度 (Ca2+) 和酸度的影响.

结论:

在复杂的水生系统中,DI-SPME方法提供了对TBBPA的准确测量.
了解TBBPA吸附对于评估其环境传输和影响至关重要.
环境因素显著调节 TBBPA 在沉积物中的命运和行为.

关键词:

化阻燃剂是一种阻燃剂.这就是DI-SPME.分割系数的分配系数吸附行为吸附行为水DOC沉积物的沉积物.

更多相关视频

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Published on: August 7, 2016

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...