High Exposure to Organophosphate Flame Retardants in Infants: Associations with Baby Products.

Published

Journal Article

Infant products containing polyurethane foam are commonly treated with organophosphate flame retardants (PFRs), including tris(1,3-dichloro-2-propyl)phosphate (TDCIPP) and triphenyl phosphate (TPHP). Infants may have greater exposure due to greater contact with these products, yet little is known about levels of exposure or the factors contributing to higher exposure. We recruited children age 2-18 months from North Carolina to investigate PFR exposure (n = 43; recruited 2014-2015). Parents provided information on potential sources and modifiers of exposure, and reported whether they owned common infant products. We measured five PFR metabolites in urine samples collected from children. TDCIPP and TPHP metabolites (bis(1,3-dichloro-2-propyl) phosphate (BDCIPP) and diphenyl phosphate (DPHP)) were most commonly detected (>93% detect). Other metabolites were detected infrequently (<35% detect). Although we did not observe a clear age trend for infants, BDCIPP levels were substantially higher than those reported for adults (geometric mean = 7.3 ng/mL). The number of infant products owned was strongly associated with BDCIPP; children with >16 products had BDCIPP levels that were 6.8 times those with <13 (p = 0.02). Infants attending daycare centers also had higher BDCIPP levels (3.7 times those of others; p = 0.07), suggesting time spent in this microenvironment contributes to higher exposure. In contrast, DPHP levels were not related to products owned, time in different microenvironments, or behavior.

Full Text

Duke Authors

Cited Authors

  • Hoffman, K; Butt, CM; Chen, A; Limkakeng, AT; Stapleton, HM

Published Date

  • December 15, 2015

Published In

Volume / Issue

  • 49 / 24

Start / End Page

  • 14554 - 14559

PubMed ID

  • 26551726

Pubmed Central ID

  • 26551726

Electronic International Standard Serial Number (EISSN)

  • 1520-5851

Digital Object Identifier (DOI)

  • 10.1021/acs.est.5b03577

Language

  • eng

Conference Location

  • United States