Accumulation and influencing factors of novel brominated flame retardants in soil and vegetation from Fildes Peninsula, Antarctica

• Main Authors: Xiong, Siyuan, Hao, Yanfen, Li, Yingming, Yang, Ruiqiang, Pei, Zhiguo, Zhang, Qinghua, Jiang, Guibin
• Format: Report
• Language: unknown
• Published: 2021
• Subjects: Novel brominated flame retardants; Soil; Lichen; Moss; Antarctica; Environmental Sciences; Antarctic; Fildes; Fildes peninsula; Great Wall Station; West Antarctica; Antarc*
• Online Access: http://ir.rcees.ac.cn/handle/311016/45645

The concentrations and distributions of nine novel brominated flame retardants (NBFRs) were analyzed in soil, lichen (Usnea aurantiaco-atra), and moss (Sanionia uncinata) samples collected from the Chinese Antarctic Great Wall Station and surrounding Fildes Peninsula area in west Antarctica. Total NBFR concentrations ranged from 61.2-225 pg/g dry weight (dw) in soil, 283-1065 pg/gdw in moss, and 135-401 pg/g dw in lichen, respectively. Decabromodiphenyl ethane (DBDPE) was the dominant NBFR in all samples, accounting for 652%, 50.1%, and 72.4% of cumulative NBFR concentration in soil, moss, and lichen, respectively. The concentrations of NBFRs in plant samples were higher than those in soil, which may be related to plant bioaccumulation. Significant log/log-linear correlations (p < 0.05) were found between the concentrations of BEHTEBP and total organic carbon (TOC) in soil, and between DBDPE and lipid content in mosses, indicating that TOC and lipid content potentially affect certain NBFRs in Antarctic soil and moss. This study presents the first report on NBFR contamination in soil and various vegetation in Antarctica. (C) 2020 Elsevier B.V. All rights reserved.