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Polybrominated diphenyl ethers (PBDEs) in indoor dust and human hair
Abstract In the present study, settled workplace dust (n =55) from commercial offices, secondary schools, shopping malls, hospitals, electronic factories and manufacturing plants in Hong Kong and settled home dust (n =23) from Hong Kong, Shenzhen and Guangzhou, around the Pearl River Delta were collected. Chemical analyses showed that the total PBDEs in workplace dust ranged from 397 to 40,236ngg−1, with the dust samples from electronic factories having the highest levels (2122–40,236ngg−1), and dust from homes ranging from 685 to 18,385ngg−1. The most abundant BDE congeners found were BDE-209 in both workplace dust and home dust, followed by BDE-99 and BDE-47. No significant correlations were observed between total PBDE concentrations in home dust and the age or the house (p >0.05), concentrations of BDE-99+BDE-47 and the number of furniture containing foam (p >0.05), and concentrations of BDE-209 and the number of electronic appliances (p >0.05). BDE-47, -99, -100 and -183 were found in most of the hair samples collected from occupants of these homes with BDE-47 being the dominant congener (0.86–5.24ngg−1). The BDE-183 concentration in home dust was significantly correlated with that in human hair (r =0.55, p <0.05, n =18). Risk assessment indicated that daily intake of PBDEs for children via non-dietary ingestion of dust (101–404ngday−1) was higher than that via food consumption (77–190ngday−1).
Highlights ► BDE-47 was found as the dominant congener in most of the hair samples. ► BDE-183 concentration in house dust was significantly correlated with that in human hair. ► Indoor dust is more important than food for PBDEs exposure in HK, as found elsewhere.
Polybrominated diphenyl ethers (PBDEs) in indoor dust and human hair
Abstract In the present study, settled workplace dust (n =55) from commercial offices, secondary schools, shopping malls, hospitals, electronic factories and manufacturing plants in Hong Kong and settled home dust (n =23) from Hong Kong, Shenzhen and Guangzhou, around the Pearl River Delta were collected. Chemical analyses showed that the total PBDEs in workplace dust ranged from 397 to 40,236ngg−1, with the dust samples from electronic factories having the highest levels (2122–40,236ngg−1), and dust from homes ranging from 685 to 18,385ngg−1. The most abundant BDE congeners found were BDE-209 in both workplace dust and home dust, followed by BDE-99 and BDE-47. No significant correlations were observed between total PBDE concentrations in home dust and the age or the house (p >0.05), concentrations of BDE-99+BDE-47 and the number of furniture containing foam (p >0.05), and concentrations of BDE-209 and the number of electronic appliances (p >0.05). BDE-47, -99, -100 and -183 were found in most of the hair samples collected from occupants of these homes with BDE-47 being the dominant congener (0.86–5.24ngg−1). The BDE-183 concentration in home dust was significantly correlated with that in human hair (r =0.55, p <0.05, n =18). Risk assessment indicated that daily intake of PBDEs for children via non-dietary ingestion of dust (101–404ngday−1) was higher than that via food consumption (77–190ngday−1).
Highlights ► BDE-47 was found as the dominant congener in most of the hair samples. ► BDE-183 concentration in house dust was significantly correlated with that in human hair. ► Indoor dust is more important than food for PBDEs exposure in HK, as found elsewhere.
Polybrominated diphenyl ethers (PBDEs) in indoor dust and human hair
Kang, Yuan (author) / Wang, Hong Sheng (author) / Cheung, Kwai Chung (author) / Wong, Ming Hung (author)
Atmospheric Environment ; 45 ; 2386-2393
2011-02-09
8 pages
Article (Journal)
Electronic Resource
English
Dust , Pearl River Delta , PBDEs , Hair