http://dx.doi.org/10.1016/j.ecoenv.2011.01.006">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Chemical and bioanalytical characterization of dioxins in indoor dust in Hong Kong

Language

English

Abstract

In the present work, air-conditioner filter dust samples collected from commercial office, secondary school, shopping mall, electronic factory and manufacturing plant in Hong Kong were collected for 7-ethoxyresorufin O-deethylase (EROD) assay using a hepatoma cell line (H4IIE) and chemical analysis of dioxins including polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and PCBs with dioxin-like structure. The result of EROD assay showed that bioassay derived TEQ of 2,3,7,8-TCDD (TEQbio) of dust samples varied from 320 to 730pg/g. Chemical analyses revealed that chemical derived TEQ of 2,3,7,8-TCDD (TEQcal) of dust samples ranged from 134 to 531pg/g. In addition, the TEQcal of samples were significantly correlated with TEQbio of samples (R=0.83, P<0.01). The average daily doses (ADDs) of dioxins via indoor dust with the estimated ADDs of dioxins via air and food were compared. The results showed that indoor dust is an important medium of exposure to dioxins. © 2011 Elsevier Inc.

Keywords

EROD assay, H4IIE, TEQbio, TEQcal

Publication Date

2011

Source Publication Title

Ecotoxicology and Environmental Safety

Volume

74

Issue

7

Start Page

947

End Page

952

Publisher

Elsevier

ISSN (print)

01476513

ISSN (electronic)

10902414

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