ASTM E 1775-96 provides standard guide for evaluating performance of on-site extraction and field-portable analysis for lead.

ASTM E 1775-96 provides standard guide for evaluating performance of on-site extraction and field-portable analysis for lead.

• A. On-site extraction and field-portable analysis for lead.
• B. Laboratory digestion of samples.
• C. Distribution of lead in household dust.
• D. Sampling of exterior soil.

Answer: (A)

ASTM E 1775-96 is about evaluating how well on-site extraction procedures and field-portable analysis for lead perform in the field. It provides a standard guide for judging the reliability, accuracy, and precision of methods used outside the laboratory—things like extracting lead from a sample in the field and using portable instruments to measure that lead content. This scope directly matches the statement, making it the best choice. The other options describe activities not covered by this standard: laboratory digestion of samples is a lab-only process typically governed by different standards; distribution of lead in household dust concerns exposure characterization rather than evaluating field methods; and sampling exterior soil refers to a sampling plan rather than validating on-site extraction and field-portable analysis performance.

ASTM E 1775-96 is about evaluating how well on-site extraction procedures and field-portable analysis for lead perform in the field. It provides a standard guide for judging the reliability, accuracy, and precision of methods used outside the laboratory—things like extracting lead from a sample in the field and using portable instruments to measure that lead content. This scope directly matches the statement, making it the best choice.

The other options describe activities not covered by this standard: laboratory digestion of samples is a lab-only process typically governed by different standards; distribution of lead in household dust concerns exposure characterization rather than evaluating field methods; and sampling exterior soil refers to a sampling plan rather than validating on-site extraction and field-portable analysis performance.