Ambient PM2.5 Oxidative Potential and Free Radicals in Chennai, May-June 2025

Chennai, a tropical coastal megacity in India, is the location for this dataset from a May-June 2025 campaign. It contains measurements of ambient PM2.5 physicochemical properties, focusing on oxidative potential via the OP-OH assay and environmentally persistent free radicals (EPFR). The dataset was authored by Rizana Salim and published on figshare in April 2026.

Use Cases

• Correlating PM2.5 oxidative potential with health outcomes based on the OP-OH assay data
• Analyzing the presence and persistence of environmentally persistent free radicals (EPFR) in a coastal urban environment
• Studying seasonal or campaign-specific variations in PM2.5 physicochemical properties in a tropical megacity

Strengths

• Dataset is 7.3 MB in size, indicating a manageable download and file size.
• Data is openly licensed under CC-BY-4.0, allowing for broad reuse and sharing.
• Measurements are from a focused campaign during May-June 2025, providing temporal specificity.

Limitations

• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Rizana Salim via figshare

Collection Method

Online and offline measurements collected during a campaign.

Time Range

May-June 2025

Freshness

Last updated 2026-04-20 00:10:09; freshness should be verified.

Geography

Chennai, India (tropical coastal megacity)