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Potential human exposure to halogenated flame-retardants in elevated surface dust and floor dust in an academic environment.

Abstract：

:Most households and workplaces all over the world possess furnishings and electronics, all of which contain potentially toxic flame retardant chemicals to prevent fire hazards. Indoor dust is a recognized repository of these types of chemicals including polybrominated diphenyl ethers (PBDEs) and non-polybrominated diphenyl ethers (non-PBDEs). However, no previous U.S. studies have differentiated concentrations from elevated surface dust (ESD) and floor dust (FD) within and across microenvironments. We address this information gap by measuring twenty-two flame-retardant chemicals in dust on elevated surfaces (ESD; n=10) and floors (FD; n=10) from rooms on a California campus that contain various concentrations of electronic products. We hypothesized a difference in chemical concentrations in ESD and FD. Secondarily, we examined whether or not this difference persisted: (a) across the studied microenvironments and (b) in rooms with various concentrations of electronics. A Wilcoxon signed-rank test demonstrated that the ESD was statistically significantly higher than FD for BDE-47 (p=0.01), BDE-99 (p=0.01), BDE-100 (p=0.01), BDE-153 (p=0.02), BDE-154 (p=0.02), and 3 non-PBDEs including EH-TBB (p=0.02), BEH-TEBP (p=0.05), and TDCIPP (p=0.03). These results suggest different levels and kinds of exposures to flame-retardant chemicals for individuals spending time in the sampled locations depending on the position of accumulated dust. Therefore, further research is needed to estimate human exposure to flame retardant chemicals based on how much time and where in the room individuals spend their time. Such sub-location estimates will likely differ from assessments that assume continuous unidimensional exposure, with implications for improved understanding of potential health impacts of flame retardant chemicals.

journal_name

Environ Res

journal_title

Environmental research

authors

Allgood JM,Jimah T,McClaskey CM,La Guardia MJ,Hammel SC,Zeineddine MM,Tang IW,Runnerstrom MG,Ogunseitan OA

doi

10.1016/j.envres.2016.11.010

subject

Has Abstract

pub_date

2017-02-01 00:00:00

pages

55-62

eissn

0013-9351

issn

1096-0953

pii

S0013-9351(16)31057-X

journal_volume

153

pub_type

杂志文章

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Potential human exposure to halogenated flame-retardants in elevated surface dust and floor dust in an academic environment.