Document of bibliographic reference 363111

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Bioaccumulation and trophic transfer of organophosphate flame retardants and their metabolites in the estuarine food web of the Pearl River, China

Abstract

The accumulation and trophodynamics of organophosphate flame retardants (OPFRs) and their metabolites were investigated in the estuarine food web of the Pearl River, China. The mean ∑OPFR concentration among the investigated species increased in the following order: fish [431 ± 346 ng/g lipid weight (lw)] < snail (1310 ± 621 ng/g lw) < shrimp (1581 ± 1134 ng/g lw) < crab (1744 ± 1397 ng/g lw). The di-alkyl phosphates (DAPs) of di-(n-butyl) phosphate (DNBP), bis(2-butoxyethyl) phosphate (BBOEP), and diphenyl phosphate (DPHP) were the most abundant metabolites, with concentrations same as or even higher than their corresponding parent compounds. The log bioaccumulation factors for most OPFRs were lower than 3.70, and significant biomagnification was only found for trisphenyl phosphate [TPHP, with the trophic magnification factors (TMFs) > 1]. The TMFs of OPFRs, except for TPHP and tributyl phosphate had a positive correlation with lipophilicity (log K_OW, p ≤ 0.05) and a negative correlation with the biotransformation rate (log K_M, p ≤ 0.05). The mean TMF > 1 was observed for all of the OPFR metabolites based on the bootstrap regression method. The “pseudo-biomagnification” of OPFR metabolites might be attributed to the biotransformation of OPFRs in organisms at high trophic levels.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000937876500001

Bibliographic citation

Huang, Q.; Hou, R.; Lin, L.; Li, H.; Liu, S.; Cheng, Y.; Xu, X. (2023). Bioaccumulation and trophic transfer of organophosphate flame retardants and their metabolites in the estuarine food web of the Pearl River, China. Environ. Sci. Technol. 57(9): 3549-3561. https://dx.doi.org/10.1021/acs.est.2c05619

Is peer reviewed

true