TY - JOUR
T1 - Contamination and risk assessment (based on bioaccessibility via ingestion and inhalation) of metal(loid)s in outdoor and indoor particles from urban centers of Guangzhou, China
AU - Huang, Minjuan
AU - Wang, Wei
AU - Chan, Chuen Yu
AU - Cheung, Kwai Chung
AU - Man, Yu Bong
AU - Wang, Xuemei
AU - Wong, Ming Hung
N1 - Funding Information:
Financial support from the Special Equipment Grant (SEG HKBU09), the Research Grant Council of the University Grants Committee of Hong Kong (HKBU260209) and the National Natural Science Foundation of China (NSFC)/Research Grants Council (RGC) (N_HKBU210/11) is gratefully acknowledged.
PY - 2014/5/1
Y1 - 2014/5/1
N2 - Road dust, household air-conditioning (AC) filter dust and PM2.5 were collected to investigate the contamination of metal(loid)s (Cr, Mn, Ni, Cu, Zn, As, Cd, Sn, Sb, Hg and Pb) in outdoor and indoor urban environments of Guangzhou. Zinc was found to be the most abundant element in road dust and household PM2.5, while the concentration of Pb was the highest in AC filter dust. Enrichment factor (EF) was used to assess the influence of human activity on the contamination of these metal(loid)s. Ingestion and inhalation were the two exposure pathways applied for risk assessment. Physiologically based extraction test (PBET) was used to estimate the oral bioaccessibilities of metal(loid)s in road dust and AC filter dust. Respiratory bioaccessible fraction of metal(loid)s via household PM2.5 was extracted with lung simulating solution. Household AC filter dust was more hazardous to human health than road dust, especially to children. Arsenic was found to be the most risky element based on the risk assessment.
AB - Road dust, household air-conditioning (AC) filter dust and PM2.5 were collected to investigate the contamination of metal(loid)s (Cr, Mn, Ni, Cu, Zn, As, Cd, Sn, Sb, Hg and Pb) in outdoor and indoor urban environments of Guangzhou. Zinc was found to be the most abundant element in road dust and household PM2.5, while the concentration of Pb was the highest in AC filter dust. Enrichment factor (EF) was used to assess the influence of human activity on the contamination of these metal(loid)s. Ingestion and inhalation were the two exposure pathways applied for risk assessment. Physiologically based extraction test (PBET) was used to estimate the oral bioaccessibilities of metal(loid)s in road dust and AC filter dust. Respiratory bioaccessible fraction of metal(loid)s via household PM2.5 was extracted with lung simulating solution. Household AC filter dust was more hazardous to human health than road dust, especially to children. Arsenic was found to be the most risky element based on the risk assessment.
KW - Daily intake
KW - Metal(loid)s
KW - Oral bioaccessibility
KW - Respiratory bioaccessibility
KW - Risk assessment
UR - http://www.scopus.com/inward/record.url?scp=84894074181&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2014.01.115
DO - 10.1016/j.scitotenv.2014.01.115
M3 - Journal article
C2 - 24561290
AN - SCOPUS:84894074181
SN - 0048-9697
VL - 479-480
SP - 117
EP - 124
JO - Science of the Total Environment
JF - Science of the Total Environment
IS - 1
ER -
