Surface dust and soil contamination with lead are major sources of exposure for which group?

Surface dust and soil contamination with lead are major sources of exposure for which group?

• A. Infants and young children (ingestion)
• B. Factory workers by inhalation
• C. Teenagers via sports exposure
• D. Elderly

Answer: (A)

Lead-contaminated surface dust and soil pose the greatest exposure risk for infants and young children. These kids are highly likely to ingest lead because of hand-to-mouth behavior during crawling, playing on the floor, and exploring their environment. Their developing nervous systems are especially sensitive to lead, so even small amounts can disrupt growth and behavior. Because they weigh less, the same amount of lead results in a higher dose per kilogram of body weight, enhancing potential harm during this critical developmental period. While inhalation can be a concern for adults in certain workplaces, the pattern described here—dust and soil in daily environments—primarily affects young children, not factory workers. Teens and the elderly may have exposures too, but surface dust and soil are not the main sources for them.

Lead-contaminated surface dust and soil pose the greatest exposure risk for infants and young children. These kids are highly likely to ingest lead because of hand-to-mouth behavior during crawling, playing on the floor, and exploring their environment. Their developing nervous systems are especially sensitive to lead, so even small amounts can disrupt growth and behavior. Because they weigh less, the same amount of lead results in a higher dose per kilogram of body weight, enhancing potential harm during this critical developmental period. While inhalation can be a concern for adults in certain workplaces, the pattern described here—dust and soil in daily environments—primarily affects young children, not factory workers. Teens and the elderly may have exposures too, but surface dust and soil are not the main sources for them.