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  2. America's Children and the Environment (ACE)

ACE Biomonitoring

Biomonitoring refers to the measurement of chemicals in human bodies, such as in blood or urine. Measurements of pollutant levels in children's bodies provide information about their exposures to environmental contaminants. Measurements in women who may become pregnant or are currently pregnant or breastfeeding provide information about exposures that may affect their children.

The ACE biomonitoring section presents information on selected chemicals measured in the bodies of women of child-bearing age and children and addresses the following topics:

Lead

A naturally occurring metal used in the productions of fuels, paints, and a variety of other consumer products. The indicators are based on lead in children and stratified by race/ethnicity and income.

View Lead Indicators

Mercury

A naturally occurring element used in producing batteries, disinfectants, thermometers, lightbulbs, contaminated fish, and a variety of other consumer products. Mercury deposits from these sources can bioaccumulate up the aquatic food chain and be found at high concentrations in some fish. These indicators are based on mercury in women and children.

View Mercury Indicators

Cotinine

A marker of exposure to secondhand smoke. The indicators are based on cotinine in non-smoking children women.

View Cotinine Indicators

Perfluorochemicals (PFAS)

A group of industrial chemicals used as surface coating for packaging products, cookware, carpets, and a variety of other consumer products. The indicator is based on PFAS in women. 

View PFCs Indicator

Phthalates

A group of industrial chemicals used to increase the flexibility of plastics in a wide array of consumer products. The indicators are based on phthalate metabolites in women and children.

View Phthalates Indicators

Bisphenol A (BPA)

An industrial chemical used in the production of plastics and found in a variety of consumer products, most notably food and drink containers. The indicators are based on bisphenol A in women and children.

View BPA Indicators

Perchlorate

A naturally occurring and man-made chemical used to manufacture fireworks, explosives, flares, and rocket fuel. These indicators are based on perchlorate in women and children.

View Perchlorate Indicators

America's Children and the Environment (ACE)

  • Basic Information
  • Key Findings
  • Frequent Questions
  • Environments and Contaminants
    • Criteria Air Pollutants
    • Hazardous Air Pollutants
    • Indoor Environments
    • Drinking Water Contaminants
    • Chemicals in Food
    • Contaminated Lands
  • Biomonitoring
    • Lead
    • Mercury
    • Cotinine
    • Perfluorochemicals (PFAS)
    • Phthalates
    • Bisphenol A (BPA)
    • Perchlorate
  • Health
    • Respiratory Diseases
      • Metadata - National Hospital Ambulatory Medical Care Survey (NHAMCS)
      • Metadata - National Hospital Discharge Survey (NHDS)
    • Childhood Cancer
      • Metadata - Surveillance, Epidemiology, and End Results (SEER) Program
    • Neurodevelopmental Disorders
    • Obesity
    • Adverse Birth Outcomes
  • Supplementary Topics
    • Birth Defects
      • Metadata - Texas Birth Defects Registry
    • Contaminants in Schools and Child Care Facilities
      • Metadata - California School Pesticide Use Reporting Database
  • Multimedia Resources and Publications
  • Review Documents
    • Biomonitoring
    • Environments and Contaminants
    • Health
    • Special Features
  • Related Topics and Links
Contact Us About America's Children and the Environment
Contact Us About America's Children and the Environment to ask a question, provide feedback, or report a problem.
Last updated on December 4, 2025
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