Accurately estimating river loads, identifying contamination sources and selecting effective mitigation measures to protect water quality requires a robust understanding of the temporal variability and underlying processes influencing the transport of suspended particulate matter and its composition during high-flow events.
This new open-access paper by Steffen Kittlaus et al. explores the dynamics of potentially toxic elements in small rivers.
Some highlights:

• Higher content of road traffic related elements (e.g. Sb) at earlier stages of the events indicates street runoff inputs
• Dissolved concentrations are most suitable to differentiate events and identify drivers
• The calculation of enrichment factors identifies elements impacted by anthropogenic emissions, indicating important pollution sources and pathways.
  
  Have a look at all results and details: https://www.sciencedirect.com/science/article/pii/S0169772225001640?via%3Dihub#f0030