Interaction of humic acids with PN6 microplastics and increased affinity for radionuclides (U-232)

Ioannis Ioannidis; Eleni Antoniou; Vasiliki Kinigopoulou; Dimitrios A. Giannakoudakis; Konstantinos S. Triantafyllidis; Ioannis Anastopoulos; Ioannis Pashalidis

doi:10.1007/s10967-025-10201-3

Interaction of humic acids with PN6 microplastics and increased affinity for radionuclides (U-232)

Ioannis Ioannidis^*, Eleni Antoniou, Vasiliki Kinigopoulou, Dimitrios A. Giannakoudakis, Konstantinos S. Triantafyllidis, Ioannis Anastopoulos, Ioannis Pashalidis

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

This study investigates the adsorption behavior of U-232 by polyamide nylon 6 (PN6) microplastics (MPs), prior and after humic acid (HA) coating. Varius factos such as contact time, temperature and pH, solution composition on the U-232 adsorption have been investigated. HA-coated MPs exhibited superior U-232 uptake, particularly in acidic and neutral solutions. In seawater the adsorption efficiency diminishes, around 20%, due to competition with naturally occurring ions and carbonate anions, which form stable U(VI) complexes in solution. These findings illuminate the nuanced role of HA-coating in shaping MPs’ environmental fate and properties as radionuclide carriers.

Original language	English
Pages (from-to)	4875-4883
Number of pages	9
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	334
Issue number	7
DOIs	https://doi.org/10.1007/s10967-025-10201-3
State	Published - Jul 2025

Bibliographical note

Publisher Copyright:
© Akadémiai Kiadó Zrt 2025.

Keywords

HA-coating
Interaction
PN6 microplastics
U-232
Water solutions

ASJC Scopus subject areas

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s10967-025-10201-3

Cite this

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title = "Interaction of humic acids with PN6 microplastics and increased affinity for radionuclides (U-232)",

abstract = "This study investigates the adsorption behavior of U-232 by polyamide nylon 6 (PN6) microplastics (MPs), prior and after humic acid (HA) coating. Varius factos such as contact time, temperature and pH, solution composition on the U-232 adsorption have been investigated. HA-coated MPs exhibited superior U-232 uptake, particularly in acidic and neutral solutions. In seawater the adsorption efficiency diminishes, around 20\%, due to competition with naturally occurring ions and carbonate anions, which form stable U(VI) complexes in solution. These findings illuminate the nuanced role of HA-coating in shaping MPs{\textquoteright} environmental fate and properties as radionuclide carriers.",

keywords = "HA-coating, Interaction, PN6 microplastics, U-232, Water solutions",

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doi = "10.1007/s10967-025-10201-3",

language = "English",

volume = "334",

pages = "4875--4883",

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T1 - Interaction of humic acids with PN6 microplastics and increased affinity for radionuclides (U-232)

AU - Ioannidis, Ioannis

AU - Antoniou, Eleni

AU - Kinigopoulou, Vasiliki

AU - Giannakoudakis, Dimitrios A.

AU - Triantafyllidis, Konstantinos S.

AU - Anastopoulos, Ioannis

AU - Pashalidis, Ioannis

N1 - Publisher Copyright: © Akadémiai Kiadó Zrt 2025.

PY - 2025/7

Y1 - 2025/7

N2 - This study investigates the adsorption behavior of U-232 by polyamide nylon 6 (PN6) microplastics (MPs), prior and after humic acid (HA) coating. Varius factos such as contact time, temperature and pH, solution composition on the U-232 adsorption have been investigated. HA-coated MPs exhibited superior U-232 uptake, particularly in acidic and neutral solutions. In seawater the adsorption efficiency diminishes, around 20%, due to competition with naturally occurring ions and carbonate anions, which form stable U(VI) complexes in solution. These findings illuminate the nuanced role of HA-coating in shaping MPs’ environmental fate and properties as radionuclide carriers.

AB - This study investigates the adsorption behavior of U-232 by polyamide nylon 6 (PN6) microplastics (MPs), prior and after humic acid (HA) coating. Varius factos such as contact time, temperature and pH, solution composition on the U-232 adsorption have been investigated. HA-coated MPs exhibited superior U-232 uptake, particularly in acidic and neutral solutions. In seawater the adsorption efficiency diminishes, around 20%, due to competition with naturally occurring ions and carbonate anions, which form stable U(VI) complexes in solution. These findings illuminate the nuanced role of HA-coating in shaping MPs’ environmental fate and properties as radionuclide carriers.

KW - HA-coating

KW - Interaction

KW - PN6 microplastics

KW - U-232

KW - Water solutions

UR - https://www.scopus.com/pages/publications/105008351286

U2 - 10.1007/s10967-025-10201-3

DO - 10.1007/s10967-025-10201-3

M3 - Article

AN - SCOPUS:105008351286

SN - 0236-5731

VL - 334

SP - 4875

EP - 4883

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

IS - 7

ER -

Interaction of humic acids with PN6 microplastics and increased affinity for radionuclides (U-232)

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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