2024
DOI: 10.1021/acsestwater.4c00528
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Effect of Plastic Type and Salt Concentration on Interactions Between Nanoscale Plastic and Amino Acids in Solution Using Saturation-Transfer Difference NMR Spectroscopy

Rajan Rai,
Ashley A. Abel,
Leah B. Casabianca

Abstract: We have used saturation-transfer difference nuclear magnetic resonance (STD-NMR) spectroscopy to examine binding between amino acids and nanoparticles that are composed of different kinds of plastic. We also examined how the presence of salt influences these interactions. We find that the presence of salt decreases binding that is primarily due to electrostatic interactions. Additionally, phenylalanine binding to polyethylene and polypropylene nanoparticles is negligible compared to binding to polystyrene nano… Show more

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