Overview
This study measured platinum group element concentrations in PM10 particles from three sites in Jeddah (urban, suburban, and industrial areas) using ICP-MS. Palladium concentrations varied substantially by site and day of week, with higher concentrations at the site with greatest traffic density. The work contributes to global monitoring data on catalytic converter-derived Pd in ambient air.
Key numbers
- Pd concentration at site S3 (highest traffic): 19.6 +/- 24.9 to 195.3 +/- 200.4 pg/m3
- Concentrations varied by day of week (working days vs weekends)
- Te and mercury (Hg) co-precipitation methods used for PGE isolation
- ICP-MS calibration curves from 0 to 7000 ng/L
- Comparison made with published German data for PM10, PM2.5, and PM1 fractions
Methods (brief)
PM10 high-volume sampler deployed at three sites in Jeddah. Filters digested and PGEs isolated by co-precipitation with tellurium and mercury. ICP-MS quantification. Sampling conducted across working days and weekends to assess traffic-related signal. Comparison with published European reference concentrations.
Implications
This page makes the source discoverable for palladium evidence routing. Provides PM10 Pd concentrations from a Middle Eastern urban environment, adding geographic diversity to the global dataset on catalytic converter Pd emissions and inhalation exposure estimates.
Related evidence
Update history
No substantive edit history is available in this build. The full commit record is available in git.