The environmental ε_Bioaccumulation.xlsx dataset provides bioaccumulation Ti uptake in biological organisms, following OECD 317 protocol. Enchytraeus crypticus were exposed to TiO₂ in soil for 14 days to monitor uptake rates (by mass), followed by a 14-day transfer to clean soil to assess elimination. The nominal exposure concentration (mg/kg) represents the intended TiO2 NM dose administered in the soil. The dataset captures sampling phase, and time points post-exposure, supporting toxicokinetic analysis. The data differentiates between pooled vs. individual samples by indicated the number of organisms included in the sample, and includes biomass measurements (wet and dry weight at each sampling time point).

Functionality dataset provides photocatalytic activity tests for NEPs, assessing the degradation of Nitrogen Oxide (NO) and nitrogen dioxide (NO₂) gases under visible light, measured via chemiluminescence. Key parameters recorded include irradiance (W/m²), temperature, and sample dimensions. NO degradation is quantified through initial NO concentration (ppbv) and exposure duration (min). TiO₂ deposition on PMMA substrates is quantified using ICP-OES, with measurements including TiO₂ mass (mg/m²), analysed area, PMMA weight (g/m²), sample weight and TiO₂ content per PMMA sample (mg). For textiles the TiO₂ concentration is expressed as mg Ti/g textile and wt%. This metadata includes measurements from 2 different partners, leading to apparent missing values due to differences in reporting metrics rather than actual data gaps

The dataset focuses on hydrodynamics and surface charge properties. It includes the initial stock concentration (weight-based) and the diluted working concentration. Hydrodynamic diameter and PDI are measured using DLS in suspension, with SDs reported. Surface charge properties are assessed through ζ-potential measurements in water, recorded alongside SDs and pH values, using ELS. The isoelectric point is reported, indicating the pH at which NMs exhibit zero net surface charge. This dataset is complete, with no missing values.

Functionality dataset focuses on TiO₂ deposition quantification on coated substrates. Deposition is quantified using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) after acidic microwave digestion, measuring Ti (mg/g substrate) with SD values. The deposited load (g/m²) represents the total NM mass per unit area. Additionally, TiO₂ content (%) on coated textiles is measured, with blank samples included to correct for background TiO₂. In LCS-2, the functionality indicator is the minimum NM deposition required for photocatalytic activity, analysed in LCS-3, minimizing material waste. The dataset’s includes measurements from three different partners, resulting in apparent missing values due to differences in reporting mechanisms rather than actual data gaps. Variations in measurement approaches, such as amount deposited (mg NPs/g textile) and TiO₂ content (%), contribute to these observed discrepancies.