X-ray fluorescence (XRF) testing is a non-destructive method that uses X-rays to identify metals like lead in paint, soil, and materials.
A non-destructive analytical technique that exposes a material to X-rays and measures the characteristic secondary (fluorescent) X-rays emitted by the elements in it. Portable handheld XRF analyzers are widely used in safety and environmental work to detect lead in paint, measure metals in soil, and verify alloy composition, providing results in seconds without damaging the surface.
Before renovating an older building, a contractor hires a certified inspector who uses a handheld XRF analyzer to test painted surfaces, identifying which components contain lead-based paint and require lead-safe work practices.
When performed by trained inspectors following the manufacturer's performance specifications, XRF testing is a widely accepted method for lead-based paint inspections, though inconclusive readings may require confirmation by laboratory analysis of paint chip samples.
Yes, XRF devices emit ionizing radiation, so operators must be trained, follow the manufacturer's safety procedures, never point the device at people, and comply with state radiation control registration or licensing requirements.
Beyond lead, XRF can identify metals such as cadmium, chromium, arsenic, and mercury in coatings, soils, and consumer products, and it is used for scrap metal sorting and positive material identification in industry.
Part of SafetyIQ's EHS glossary: plain-English definitions of workplace health and safety terms.
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