|Chemicals heavily used in everyday products can end up in dust and increase people’s exposure to these contaminants.|
In a new study, scientists calculated exposure to bisphenol A (BPA), an antibacterial agent and a flame retardant through dust. They determined the concentrations of BPA, triclosan (TCS) and tetrabromobisphenol-A (TBBPA) in indoor dust samples from 18 houses and 2 offices in Flanders, Belgium.
The researchers conclude that exposure to BPA, TBBPA and triclosan from dust contributes to less than 10 percent of average total daily exposure. Diet and direct contact with personal care products are the greatest contributors.
Concentrations in homes were found to be 1,460; 220 and 10 nanograms/gram dust for BPA, Triclosan and TBBPA respectively. Concentrations in offices were almost 5-10 times higher for BPA and TBBPA.
BPA is a chemical in plastic that mimics estrogen and has been associated with a host of reproductive and other harmful effects in animals and maybe even in humans. Triclosan is an antibacterial chemical used in many personal care products that has been associated with thyroid damage. TBBPA is a brominated flame retardant derived from BPA and has been shown to cause neurological and thyroid disorders.
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Written on 11 September 2009.