Which material is commonly the target of XRF measurement for lead content in residential settings?

Which material is commonly the target of XRF measurement for lead content in residential settings?

• A. Painted surfaces
• B. Ceramic tiles
• C. Asphalt
• D. Wood furniture

Answer: (A)

Painted surfaces are the primary target for XRF measurement of lead in residential settings because lead-based paint was widely used on walls, trim, doors, and window frames in older homes. XRF is a portable, non-destructive tool that directly scans the paint film to quantify how much lead is present, allowing inspectors to quickly assess whether a surface poses a lead hazard and if remediation is needed. While lead can appear in glazes on ceramic tiles or in some old furniture, those are not the typical focus of lead-paint risk assessments in homes; the most common and practical screening target is the painted coatings themselves.

Painted surfaces are the primary target for XRF measurement of lead in residential settings because lead-based paint was widely used on walls, trim, doors, and window frames in older homes. XRF is a portable, non-destructive tool that directly scans the paint film to quantify how much lead is present, allowing inspectors to quickly assess whether a surface poses a lead hazard and if remediation is needed. While lead can appear in glazes on ceramic tiles or in some old furniture, those are not the typical focus of lead-paint risk assessments in homes; the most common and practical screening target is the painted coatings themselves.