Microplastics released from infant feeding bottles

The dataset provides:- FTIR spectra (tab-delimited text) for bottle materials and representative isolated microplastics (PP and PA).- Optical microscope images of representative microplastics morphologies (fragments and films) extracted from bottle washing solutions.- SEM images of the inner surface of bottles (raw vs. after sterilization vs. after exposure to hot water).Data description:1) FTIR spectra (FTIR/)Files:PA_bottle.txt – FTIR spectrum of the PA bottle material.PP_bottle.txt – FTIR spectrum of the PP bottle material.PA_MPs.txt – FTIR spectrum of representative isolated PA microplastics.PP_MPs.txt – FTIR spectrum of representative isolated PP microplastics.Format: plain text, two columns, tab-delimited:Wavenumber (cm⁻¹)Signal intensity (arbitrary units as exported by the instrument software)How to load (example):In Excel: import as tab-delimited.2) Optical microscopy images (Optical_microscope/)Representative microplastics images (JPEG) showing the two main morphologies used in the manuscript:Fragments and films.Files and meaning:PP_fragment_1.jpg, PP_fragment_2.jpg – PP microplastic fragments.PP_film_1.jpg, PP_film_2.jpg – PP microplastic films.PA_fragment.jpg – PA microplastic fragment.PA_film.jpg – PA microplastic film.Image properties: JPEG, 2592×1944 px.3) SEM images of bottle inner surfaces (SEM/)SEM micrographs (TIFF) documenting surface condition under selected use scenarios:raw (untreated),after sterilization,after exposure to hot water at 90 °C for 15 minutes.Files and meaning:PP_raw.tif, PA_raw.tif – inner surface before any treatment.PP_after_sterilization.tif, PA_after_sterilization.tif – after sterilization step.PP_after exposure_90_15.tif, PA_after exposure_90_15.tif – after exposure at 90 °C for 15 min.Image properties: TIFF, 2048×1887 px; scale bar and acquisition parameters are embedded in the micrographs.