What is the scope of ASTM E 1979-98?

What is the scope of ASTM E 1979-98?

• A. Standard guide for evaluating performance of on-site extraction and field-portable electrochemical or spectrophotometric analysis for lead
• B. Standard practice for ultrasonic extraction of paint, dust, soil, and air samples for subsequent determination of lead
• C. Field collection of dried paint samples for lead determination
• D. Preparation of dried paint samples for laboratory analysis

Answer: (B)

This standard defines how to use ultrasonic extraction to prepare samples for lead determination. It covers applying ultrasonic energy to paint, dust, soil, and air samples so the lead is released into a solution that can be measured reliably in the laboratory. The focus is on a consistent preparation method used before analysis, ensuring comparability of results across these different matrices. The other options describe field testing or sample collection activities, or general lab preparation without specifying ultrasonic extraction, which is why this choice best matches the scope of ASTM E 1979-98.

This standard defines how to use ultrasonic extraction to prepare samples for lead determination. It covers applying ultrasonic energy to paint, dust, soil, and air samples so the lead is released into a solution that can be measured reliably in the laboratory. The focus is on a consistent preparation method used before analysis, ensuring comparability of results across these different matrices. The other options describe field testing or sample collection activities, or general lab preparation without specifying ultrasonic extraction, which is why this choice best matches the scope of ASTM E 1979-98.