Adsorption and Desorption of Steroid Hormones by Microplastics in Seawater

This study evaluated the adsorption and desorption of 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) on microplastics in seawater. The effects of microplastic materials and particle sizes on adsorption of E2 and EE2 were explored. Moreover, effects of salinity, pH, humic acid (HA) concentrations,...

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Bibliographic Details
Published inBulletin of environmental contamination and toxicology Vol. 107; no. 4; pp. 730 - 735
Main Authors Lu, Jian, Wu, Jie, Wu, Jun, Zhang, Cui, Luo, Yongming
Format Journal Article
LanguageEnglish
Published New York Springer US 01.10.2021
Springer Nature B.V
Subjects
17β-Estradiol
Adsorption
Aquatic Pollution
Desorption
Earth and Environmental Science
Ecotoxicology
Endocrine disruptors
Environment
Environmental Chemistry
Environmental Health
Hormones
Humic acids
Isotherms
Microplastics
pH effects
Plastic pollution
Pollution
Salinity
Salinity effects
Seawater
Sex hormones
Soil Science & Conservation
sorption isotherms
Steroid hormones
toxicology
Waste Water Technology
Water Management
Water Pollution Control
Microplastics
Desorption
Adsorption
Endocrine disrupting chemicals
Seawater
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Summary:This study evaluated the adsorption and desorption of 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) on microplastics in seawater. The effects of microplastic materials and particle sizes on adsorption of E2 and EE2 were explored. Moreover, effects of salinity, pH, humic acid (HA) concentrations, and initial E2/EE2 concentrations on adsorption were also discussed. Increase in salinity, HA concentration, and initial E2/EE2 concentration would enhance adsorption of E2/EE2 on microplastics. Adsorption capacity of E2/EE2 firstly increased to reach the highest at pH of 8.0 and then decreased when pH further increased. Pseudo-second-order kinetics better fitted adsorption data of E2 while pseudo-first-order model yielded better fitting results for EE2. Freundlich isotherm was better to fit the adsorption data of E2 while Langmuir isotherm yielded better fitting results for EE2. Desorption capacity of E2/EE2 on microplastics was over 40% of its adsorption capacity. This study provides new insights on microplastics and endocrine disrupting chemicals.
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ISSN:0007-4861
1432-0800
1432-0800
DOI:10.1007/s00128-020-02784-2