Which ASTM standard describes ultrasonic extraction of paint, dust, soil, and air samples for lead determination?

Which ASTM standard describes ultrasonic extraction of paint, dust, soil, and air samples for lead determination?

• A. ASTM E 1775-96
• B. ASTM E 1645
• C. ASTM E 1729
• D. ASTM E 1979-98

Answer: (A)

The thing being tested is knowing which ASTM standard covers using ultrasonic energy to extract lead from common exposure-related matrices for subsequent analysis. The standard that fits is ASTM E1775-96, which is specifically titled Standard Guide for Ultrasonic Extraction of Paint, Dust, Soil, and Air Samples for Lead Determination. It provides guidance on how to perform ultrasonic extraction so lead is efficiently transferred from solid materials into a liquid extract, making the samples ready for measurement. The guide covers appropriate solvent choices, extraction time, temperature, and sample-to-solvent ratios, aiming for consistency and comparability of results across labs. It’s focused on the extraction step across those four matrices, rather than on the analytical instrument used afterward. The other standards shown describe different approaches or aspects of lead analysis that do not address the ultrasonic extraction procedure for these matrices, so they don’t fit the question.

The thing being tested is knowing which ASTM standard covers using ultrasonic energy to extract lead from common exposure-related matrices for subsequent analysis. The standard that fits is ASTM E1775-96, which is specifically titled Standard Guide for Ultrasonic Extraction of Paint, Dust, Soil, and Air Samples for Lead Determination. It provides guidance on how to perform ultrasonic extraction so lead is efficiently transferred from solid materials into a liquid extract, making the samples ready for measurement. The guide covers appropriate solvent choices, extraction time, temperature, and sample-to-solvent ratios, aiming for consistency and comparability of results across labs. It’s focused on the extraction step across those four matrices, rather than on the analytical instrument used afterward.

The other standards shown describe different approaches or aspects of lead analysis that do not address the ultrasonic extraction procedure for these matrices, so they don’t fit the question.