Polybrominated diphenyl ethers (PBDEs) in car and house dust from Thailand: Implication for human exposure. Issue 7 (7th June 2018)

• Record Type: Journal Article
• Authors: Muenhor, Dudsadee; Harrad, Stuart
• Is Part Of: Journal of environmental science and health. Volume 53:Issue 7(2018)
• Page Start: 629
• Page End: 642
• Publication Date: 2018-06-07
• Subjects: Car -- exposure -- home -- indoor dust -- polybrominated diphenyl ethers (PBDEs); Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Ecology -- periodicals; Hazardous Substances -- periodicals; 628
• DOI: 10.1080/10934529.2018.1429725
• Languages: English
• ISSNs: 1093-4529

Abstract

ABSTRACT: This study examines concentrations of tri- to hexa-bromodiphenylethers (BDEs 17, 28, 47, 49, 66, 85, 99, 100, 153 and 154; Σ10 PBDEs (polybrominated diphenyl ethers)) in car ( n = 30) and house dust samples ( n = 53) collected from different provinces in Thailand. The specific objectives of this study were: (i) to monitor levels of tri- to hexa-bromodiphenylethers (BDEs 17, 28, 47, 49, 66, 85, 99, 100, 153 and 154; Σ10 PBDEs) in vehicle and residential dust sampled from various provinces in Thailand; (ii) to compare PBDE concentrations with those detected for domestic and automobile dust in studies from other countries and (iii) to estimate exposure of the Thai population to the target PBDEs via dust ingestion. Levels of Σ10 PBDEs in vehicle and domestic dust were 0.68–38 and 0.59–260 ng g −1, respectively. BDEs 99 and 47 were the most abundant congeners in all automobile and residential dust samples. A t-test analysis indicated that Σ10 PBDE concentrations in dust samples from dwellings exceeded significantly those from cars ( p = 0.001). Furthermore, contents in dust of all PBDEs studied, except for BDE-28, were significantly higher in homes than in vehicles ( p = 0.000–0.004). Principal Component Analysis (PCA) demonstrated no differences in PBDE congener patterns between Thai house and automobile dust, but revealed some subtle differences in the congener pattern between household dust samples in Thailand and those reported previously for the United Kingdom. Estimated environmental exposure of Thai adults and children for BDE-99 via dust ingestion were well within a chronic oral reference dose (RfD) for BDE-99 (100 ng/kg bw/day) proposed by the United States Environmental Protection Agency (US EPA).