微塑料对典型精神活性药物的吸附行为研究

王瑞雪; 王雨琪; 张承龙; 许赟赟

doi:10.13205/j.hjgc.202606014

微塑料对典型精神活性药物的吸附行为研究

doi: 10.13205/j.hjgc.202606014

上海第二工业大学资源与环境工程学院, 上海 201209

基金项目:

国家自然基金面上项目“极性非质子溶剂中资源化废电路板贵金属及环氧树脂材料的多米诺反应机制和调控研究”（52470153）；上海市浦东新区民生科研专项“汽车零部件再制造基地大气污染物释放特征及治理技术研究”（PKJ2021-C06）

详细信息

作者简介:
王瑞雪,女,教授,主要研究方向为固体废弃物资源化与污染防治。rxwang@sspu.edu.cn

通讯作者:
张承龙,男,教授,主要研究方向为固体废物资源化。clzhang@sspu.edu.cn

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出版历程
- 收稿日期: 2025-10-10
- 录用日期: 2025-11-05
- 修回日期: 2025-10-23
- 网络出版日期: 2026-07-06

Research on adsorption behavior of microplastics for typical psychoactive drugs

School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China

摘要

摘要: 微塑料作为一种新型环境污染物，在水环境中与精神类药物吸附并不断迁移和转化，最终造成环境污染。为探究微塑料对精神活性药物的吸附行为及机理，选取颗粒粒径为50 μm的PE、PP、PS和PVC 4种微塑料作为实验主体，以及地西泮、氟西汀和米安色林3种精神类药物，模拟微塑料在水体中对3种药物的吸附，考察了其动力学特征、吸附等温线，以及pH、盐度对吸附的影响。通过采用Langmuir和Freundlich等温吸附模型对4种微塑料吸附精神类药物的实验数据拟合分析得出，PE对氟西汀、PP对于米安色林、PVC对地西泮的吸附效果更好，PS对氟西汀的吸附作用存在一定线性特征。当自然表层水pH值在6.5~8.5时，微塑料对地西泮的吸附最大。随着NaCl浓度的增加，溶液中地西泮的平衡吸附量也逐渐增大，非静电作用主导地西泮的吸附，增加离子强度可以提高地西泮在水中微塑料上的吸附能力。
- 微塑料 /
- 精神活性药物 /
- 吸附动力学 /
- 吸附等温线 /
- 吸附机理
Abstract: As an emerging environmental pollutant， microplastics can adsorb psychotropic drugs in aquatic environments， followed by continuous migration and transformation， ultimately contributing to environmental pollution. To investigate the adsorption behavior and mechanism of microplastics for psychotropic drugs， four types of microplastics （PE， PP， PS， and PVC） with a particle size of 50 μm were selected as the experimental subjects， and three psychotropic drugs （diazepam， fluoxetine， and mianserin） were used to simulate the adsorption of these drugs by microplastics in water. The kinetic characteristics， adsorption isotherms， as well as the effects of pH and salinity on adsorption were examined. By fitting and analyzing the experimental data of the adsorption of psychotropic drugs by the four types of microplastics using the Langmuir and Freundlich isothermal adsorption models， it was found that PE adsorbed fluoxetine better， PP adsorbed mianserin better， and PVC adsorbed diazepam better， while a certain linear characteristic was observed in the adsorption of fluoxetine by PS. When the pH value of natural surface water ranged between 6.5 and 8.5， the adsorption of diazepam by microplastics reached a maximum. With an increase in NaCl concentration， the equilibrium adsorption capacity of diazepam in the solution also gradually increased. This is because the adsorption of diazepam is dominated by non-electrostatic interactions， and increasing the ionic strength can enhance the adsorption capacity of microplastics for diazepam in water.
- microplastics /
- psychoactive drugs /
- adsorption kinetics /
- adsorption isotherm /
- adsorption mechanism

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参考文献(28)

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