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Science 25 June 1982:
Vol. 216. no. 4553, pp. 1429 - 1431
DOI: 10.1126/science.7089532
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Articles

Science, Vol 216, Issue 4553, 1429-1431
Copyright © 1982 by American Association for the Advancement of Science

articles

Temporal trends in the lead concentrations of umbilical cord blood

MB Rabinowitz and HL Needleman

Umbilical cord blood specimens from 11,837 births between April 1979 and April 1981 have been analyzed for lead by anodic stripping voltammetry. The mean was 6.56 +/- 3.19 (standard deviation) micrograms per deciliter of blood, and the range was 0.0 to 37.0 micrograms per deciliter. The mean decreased annually by 0.77 +/- 0.03 microgram per deciliter, about 11 percent. Lead concentrations were higher in infants born in summer than in infants born in winter (7.17 versus 5.99, probability less than .001). A Fourier model of the data is presented, and possible reasons for the decline are discussed.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Factors influencing the difference between maternal and cord blood lead.
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Childhood Lead Poisoning--United States: Report to the Congress by the Agency for Toxic Substances and Disease Registry.
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Arch Pediatr Adolesc Med 142, 1145-1146
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A Decline in Lead Transport by the Mississippi River.
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Science 230, 439-441
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The Relationship Between Prenatal Exposure to Lead and Congenital Anomalies.
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