中国长江上游流域，西南地区苍鹭蛋中的有机磷阻燃剂。
Organophosphate flame retardants in heron eggs from upper Yangtze River basin, southwest China.
机构信息
Key Laboratory of Yangtze Estuary Water Environment of the Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; International Joint Research Center for Sustainable Urban Water System, Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
Key Laboratory of Yangtze Estuary Water Environment of the Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
出版信息
Chemosphere. 2019 Dec;236:124327. doi: 10.1016/j.chemosphere.2019.07.058. Epub 2019 Jul 10.
The egg samples of four heron species, including black-crowned night heron (Nycticorax nycticorax), little egret (Egretta garzetta), Chinese pond heron (Ardeola bacchus) and cattle egret (Bubulcus ibis), were collected from the upper Yangtze River (Changjiang) Basin, Southwest China in early summer of 2017. Nine out of ten target organophosphate flame retardants (PFRs) were detected in these heron egg samples. The sum of concentrations of the PFRs quantified (∑PFRs) ranged from 63 to 590 pmol g ww (18-185 ng g ww) with a median value of 139 pmol g ww (48 ng g ww) among all samples. The median ∑PFRs in eggs of night herons (160 pmol g ww) was higher than Chinese pond herons (median 121 pmol g ww) and little egrets (median 109 pmol g ww). In heron eggs, ∑PFRs were mainly contributed by tri-n-butyl phosphate (TNBP), tris (isobutyl) phosphate (TIBP), tris (1-chloro-2-propyl) phosphate (TCIPP) and tri-2-methylphenyl phosphate (TMPP). Alkyl-PFRs accounted for approximately 28%-85% (median 57%) of the nine PFRs quantified while the rest is contributed by aryl-PFRs and chlorinated PFRs. Lower levels of PFRs in little egret eggs were found upstream than downstream of the Yangtze. In addition, the daily intakes of PFRs through ingestion of heron eggs were estimated at lower levels.
2017 年初夏，在中国西南地区的长江上游流域采集了四种鹭科鸟类（包括黑冠夜鹭、小白鹭、池鹭和牛背鹭）的卵样本。十种目标有机磷阻燃剂（PFRs）中有九种在这些鹭卵样本中被检测到。定量的 PFRs 浓度总和（∑PFRs）范围为 63 至 590 pmol g ww（18-185 ng g ww），所有样本的中位数为 139 pmol g ww（48 ng g ww）。夜鹭卵中的∑PFRs（中位数 160 pmol g ww）高于池鹭（中位数 121 pmol g ww）和小白鹭（中位数 109 pmol g ww）。在鹭卵中，∑PFRs 主要由三正丁基磷酸酯（TNBP）、三异丁基磷酸酯（TIBP）、三（1-氯-2-丙基）磷酸酯（TCIPP）和三（2-甲基苯基）磷酸酯（TMPP）组成。烷基-PFRs 约占所定量的九种 PFRs 的 28%-85%（中位数 57%），其余部分由芳基-PFRs 和氯化 PFRs 组成。在长江的上游和下游，小白鹭卵中的 PFRs 水平较低。此外，通过摄入鹭卵摄入 PFRs 的日摄入量估计处于较低水平。
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