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

Yuan Kang; Kwai Chung Cheung; Zongwei CAI; Ming Hung WONG

doi:10.1016/j.ecoenv.2011.01.006

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

Yuan Kang
, Kwai Chung Cheung
, Zongwei CAI
, Ming Hung WONG^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

14 Citations (Scopus)

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 (TEQ_bio) of dust samples varied from 320 to 730pg/g. Chemical analyses revealed that chemical derived TEQ of 2,3,7,8-TCDD (TEQ_cal) of dust samples ranged from 134 to 531pg/g. In addition, the TEQ_cal of samples were significantly correlated with TEQ_bio 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.

Original language	English
Pages (from-to)	947-952
Number of pages	6
Journal	Ecotoxicology and Environmental Safety
Volume	74
Issue number	4
DOIs	https://doi.org/10.1016/j.ecoenv.2011.01.006
Publication status	Published - May 2011

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SDG 3 Good Health and Well-being

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EROD assay
H4IIE
TEQ

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10.1016/j.ecoenv.2011.01.006

Cite this

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title = "Chemical and bioanalytical characterization of dioxins in indoor dust in Hong Kong",

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.",

keywords = "EROD assay, H4IIE, TEQ",

author = "Yuan Kang and Cheung, \{Kwai Chung\} and Zongwei CAI and WONG, \{Ming Hung\}",

note = "Funding Information: Financial support from the Research Grants Council of the University Grants Committee of Hong Kong ( HKBU 260209 ) and Special Equipment Grant ( HKBU09 ) and the Mini-AoE (Area of Excellence, RC/AOE/08-09/01) Fund from Hong Kong Baptist University are gratefully acknowledged.",

year = "2011",

month = may,

doi = "10.1016/j.ecoenv.2011.01.006",

language = "English",

volume = "74",

pages = "947--952",

journal = "Ecotoxicology and Environmental Safety",

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TY - JOUR

T1 - Chemical and bioanalytical characterization of dioxins in indoor dust in Hong Kong

AU - Kang, Yuan

AU - Cheung, Kwai Chung

AU - CAI, Zongwei

AU - WONG, Ming Hung

N1 - Funding Information: Financial support from the Research Grants Council of the University Grants Committee of Hong Kong ( HKBU 260209 ) and Special Equipment Grant ( HKBU09 ) and the Mini-AoE (Area of Excellence, RC/AOE/08-09/01) Fund from Hong Kong Baptist University are gratefully acknowledged.

PY - 2011/5

Y1 - 2011/5

N2 - 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.

AB - 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.

KW - EROD assay

KW - H4IIE

KW - TEQ

UR - https://www.scopus.com/pages/publications/79955490770

U2 - 10.1016/j.ecoenv.2011.01.006

DO - 10.1016/j.ecoenv.2011.01.006

M3 - Journal article

C2 - 21300406

AN - SCOPUS:79955490770

SN - 0147-6513

VL - 74

SP - 947

EP - 952

JO - Ecotoxicology and Environmental Safety

JF - Ecotoxicology and Environmental Safety

IS - 4

ER -

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

Abstract

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