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Organophosphate flame retardants in heron eggs from upper Yangtze River basin, southwest China
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Number of Authors: 72019 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 236, article id 124327Article in journal (Refereed) Published
Abstract [en]

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 (Sigma PFRs) ranged from 63 to 590 pmol g(-1) ww (18-185 ng g(-1) ww) with a median value of 139 pmol g(-1) ww (48 ng g(-1) ww) among all samples. The median Sigma PFRs in eggs of night herons (160 pmol g(-1) ww) was higher than Chinese pond herons (median 121 pmol g(-1) ww) and little egrets (median 109 pmol g(-1) ww). In heron eggs, Sigma 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 PFR5. 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. 

Place, publisher, year, edition, pages
2019. Vol. 236, article id 124327
Keywords [en]
Organophosphorus flame retardants, Organophosphates, Water birds, Bird eggs, Environmental pollutants, Yangtze river basin
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-175922DOI: 10.1016/j.chemosphere.2019.07.058ISI: 000491634500121PubMedID: 31319314OAI: oai:DiVA.org:su-175922DiVA, id: diva2:1371527
Conference
38th International Symposium on Halogenated Persistant Organic Pollutants (DIOXIN), 10th International PCB Workshop, Krakow, Poland, August 26-31, 2018
Available from: 2019-11-20 Created: 2019-11-20 Last updated: 2019-11-20Bibliographically approved

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Bignert, AndersBergman, Åke
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