Abstract：
:Organophosphate esters (OPEs) are ubiquitous contaminants in the environment, but little is known on the occurrence and distribution of OPEs in the background atmosphere of urban environments. In this study, air samples were collected from two sites in the city of Shanghai, a typical fast developing metropolitan of East China, for investigating the concentration levels, composition profiles, potential sources and human health risk to OPEs. The annual average (median) values of total suspended particulates ΣOPEs concentrations were 19.4 (16.6) and 6.6 (4.4) ng/m3 for the sub-urban (BS) and urban (XJH) sampling sites, respectively. The ΣOPEs concentrations at BS were significantly higher than those at XJH (P < 0.01), suggesting that more local sources of these compounds in the sub-urban area. The composition profile for ΣOPEs concentrations was different between the two sites, possibly because they originated from different sources. At BS, the dominated OPEs profile was TPhP followed by TCPP and TCEP > TDCPP > TBP > TCP, accounting for 37.0%, 19.6%, 15.8%, 11.8%, 11.0% and 4.2% of the ΣOPEs, respectively. Comparatively, chlorinated OPEs (TCEP, TCPP, and TDCPP) were major contributors to ΣOPEs concentrations at XJH, with the sum of all three chlorinated OPEs concentrations comprising 69.0% of the ΣOPEs. Based on the measured data in the present study human daily intake of each OPEs through particulate inhalation were estimated using a Monte Carlo simulation and the preliminary exposure assessments suggested a low risk of OPEs via inhalation in Shanghai.
journal_name
Chemospherejournal_title
Chemosphereauthors
Ren G,Chen Z,Feng J,Ji W,Zhang J,Zheng K,Yu Z,Zeng Xdoi
10.1016/j.chemosphere.2016.08.090subject
Has Abstractpub_date
2016-12-01 00:00:00pages
75-83eissn
0045-6535issn
1879-1298pii
S0045-6535(16)31121-3journal_volume
164pub_type
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