Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

Which type of lead hazard testing is characterized by a chemical reaction that shows a pink or red discoloration?

1. Sodium Bicarbonate Testing

2. Sodium Hydroxide Testing

3. Sodium Rhodizonate Testing

4. Lead Chromate Testing

The correct answer is: Sodium Rhodizonate Testing

Sodium Rhodizonate testing is characterized by a chemical reaction that results in a pink or red discoloration when it comes into contact with lead. This testing method involves a reagent, Sodium Rhodizonate, which reacts with lead ions. When lead is present, the chemical reaction leads to the formation of a complex that exhibits a distinctive pink or red color, indicating the presence of lead in the tested sample. This method is particularly effective for identifying lead in various surfaces, such as paint or dust, and serves as a visual confirmation for risk assessors during evaluations. Its specificity for lead makes it a valuable tool in lead hazard assessment and helps ensure the safety and health of individuals in environments that may be contaminated with lead-based materials.