| Column | Value |
|---|---|
| matrix | <app.db.schema.ExposureMatrix object at 0x7cf758cd00e0> |
| particle | <app.db.schema.ParticleCharacterisation object at 0x7cf758cd2030> |
| size_distributions | (<app.db.schema.ParticleSizeDistribution object at 0x7cf758cd2690>) |
| id | 70 |
| matrix_id | 10 |
| particle_id | 8 |
| fractional_abundance | 0.0223 |
| size_bin_min_nm | 1000.0 |
| size_bin_max_nm | 10000.0 |
| notes | PS, 2.1% of total polymer mass (Durkin et al. 2026). Mass-based share; size bin inherited and not resolved by the source method. |