How Wristbands Work
These two exposure routes are captured by wristbands.
What are dermal and inhalation exposure?
Parabens are commonly used as this in personal care products.
What are preservatives?
These chemicals are commonly found in non-stick cookware and waterproof clothing.
What are PFAS?
These 3 groups are more vulnerable to chemical exposure.
Who are pregnant women, children, and the elderly?
This term describes a sample of people (like the 20 adults in Durham) who were recruited easily because they were nearby, rather than randomly.
What is a convenience sample?
Wristbands measure this type of exposure compared to internal biomarkers.
What is external or potential exposure?
Average number of personal care products Americans use daily (approximate).
What is about 12 products?
These are found in cleaners, sprays, and air fresheners.
What are VOCs (volatile organic compounds)?
Good exposure data should capture type, amount, and this third factor.
What is duration of exposure?
This is the primary concern for researchers when participants wear wristbands during vigorous exercise or bathing, which might strip away certain chemicals.
What is loss of analytes (or wash-off)?
Wristbands collect chemicals without active pumping or power through this type of sampling.
What is passive sampling?
Parabens are linked to this type of biological disruption.
What is endocrine (hormone) disruption?
This chemical group is commonly found in receipts and food packaging.
What are bisphenols (BPA)?
This specific limitation of self-reported surveys occurs when participants cannot accurately remember their past actions.
What is recall bias?
Residents in Texas wore wristbands after this specific 2017 event to understand their personal exposures.
What was Hurricane Harvey?
Chemicals do this inside the wristband, allowing accumulation over time.
What is sorb/bind?
Parabens have a short duration in the body, typically with this half-life.
What is 24 hours?
These are found in furniture, carpets, and electronics.
What are flame retardants?
Good data collection minimizes this on participants to keep compliance high.
What is burden?
This laboratory technique, abbreviated as GC-MS, is used to separate and identify the 1,500+ chemicals a band can capture.
What is Gas Chromatography-Mass Spectrometry?
This term refers to the "personal cloud" of chemicals that surrounds an individual and is captured by the wristband as they move.
What is the exposome?
Because they are absorbed through the skin and inhaled, parabens are classified as this type of organic chemical.
Semi-Volatile Organic Compound (SVOC)
These chemicals are commonly found in personal care products like fragrances, perfumes, and hairsprays
What are phthalates?
The five routes through which chemicals enter the body.
What is air, food, water, skin contact, and household products?
Chemicals are removed from wristbands using this process.
What is solvent extraction?