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August 13, 2026WaterOpen Access

Traffic-Driven Spatial and Seasonal Variability of Rainwater Chemistry: Insights from Multivariate Analysis in Bucharest, Romania

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Overview

Randomized trial examines rainwater quality influenced by traffic in Bucharest, suggesting need for treatment.

Key Points

  • This research aims to characterize the spatial and seasonal variability of rainwater quality in Bucharest, influenced by traffic and local emissions.
  • Evaluated rainwater quality at six sites (four traffic-influenced, two urban-green) during 37 rainfall events from January to November 2025.
  • Analyzed samples for pH, electrical conductivity, turbidity, hardness, chloride, nitrogen species, trace metals, using descriptive statistics and PCA.
  • Utilized Pearson’s correlation and Principal Component Analysis to interpret data.
  • Traffic-influenced sites showed 47% higher mean electrical conductivity, 64% higher cadmium, and 67% higher zinc compared to urban-green sites.
  • Cadmium levels reached WHO guidelines, while lead exceeded EU values at traffic sites, and ammonium exceeded 0.50 mg/L in most samples from traffic locations.
  • PCA identified two main factors affecting water quality: traffic-related metals and secondary nitrogen processing.

Cite This Study

A 2026 study studied this question.

synapsesocial.com/papers/6a7d75c72b0e0cff3f63ea47https://doi.org/10.3390/w18161956
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Molecular and Ionic Signatures in Rainwater: Unveiling Sources of Atmospheric Pollution2025
  2. 2Rainwater Composition of a Sub-tropical Urban Indian Town Under the Influence of Natural and Anthropogenic Factors2025
  3. 3Rainwater composition of a sub-tropical urban Indian town under the influence of natural and anthropogenic factors2026
  4. 4Trace Metals in Water Intended for Human Consumption from Urban and Rural Areas of Satu Mare County, Romania: Spatial–Temporal Patterns and Health Risk2026 · 2 citations
  5. 5Decoding Urban Traffic Pollution: Insights on Trends, Patterns, and Meteorological Influences for Policy Action in Bucharest, Romania2025