Abstract
Original on-line measurements of acetone, ammonia and hydrogen cyanide in the exhaled breath of several volunteers within the age ranges 4–6 years and 60–83 years are reported and compared with previous data on volunteer cohorts covering ages 17–18 years and 20–60 years. The compiled data show that a significant statistical increase in breath ammonia occurs with increasing age, but that acetone and hydrogen cyanide do not vary greatly with age.
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