Occurrence and Distribution of Persistent Organic Pollutants (POPs) in Amphibian Species: Implications from Biomagnification Factors Based on Quantitative Fatty Acid Signature Analysis

Ding Yang; Zheng Xiaobo; Yu LehuanLu RuifengWu XiaodanLuo XiaojunMai Bixian

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Occurrence and Distribution of Persistent Organic Pollutants (POPs) in Amphibian Species: Implications from Biomagnification Factors Based on Quantitative Fatty Acid Signature Analysis

机译：Occurrence and Distribution of Persistent Organic Pollutants (POPs) in Amphibian Species: Implications from Biomagnification Factors Based on Quantitative Fatty Acid Signature Analysis

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Contaminants pose a great threat to amphibian populations, but the bioaccumulation and distribution of contaminants in amphibians are still unclear. Polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) had median concentrations of 468-3560 ng/g lipid weight (lw) and 206-2720 ng/g lw in the muscle of amphibians, respectively. BDE 209 was the predominant PBDE congener, while CBs 118, 138, 153, and 180 were the main PCB congeners. The diet compositions of amphibians were estimated by quantitative fatty acid signature analysis (QFASA). Dragonfly contributed the most to the diet of amphibians. Biomagnification factors (BMFs) based on quantitative amphibian/insect relationships showed more credible results than BMFs based on amphibian/each insect or amphibian/combined prey relationships. BMFs derived from QFASA declined with log K-OW from 5 to 6.5 and then showed a parabolic relationship with log K-OW greater than 6.5. BMFs of PCBs were significantly influenced by the elimination capacity of PCBs in amphibians. Less-hydrophobic PCBs preferentially accumulated in the skin than in muscle, which was probably due to the dermal exposure of less-hydrophobic PCBs for amphibians. The biomagnification and distribution of contaminants may be affected by multiple exposure pathways and the toxicokinetics of contaminants in various life stages of amphibians.

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《Environmental Science & Technology: ES&T》 |2022年第5期|3117-3126|共10页
作者
Ding Yang; Zheng Xiaobo; Yu LehuanLu RuifengWu XiaodanLuo XiaojunMai Bixian;
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作者单位

Chinese Acad Sci;

South China Agr Univ;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
amphibian; insect; persistent organic pollutants; fatty acid; biomagnification; tissue distribution; maternal transfer; POLYBROMINATED DIPHENYL ETHERS; BROMINATED FLAME RETARDANTS; MATERNAL TRANSFER; POLYCHLORINATED-BIPHENYLS; TISSUE DISTRIBUTION; ELIMINATION RATES; FROGS; METAMORPHOSIS; BIOACCUMULATION; METABOLISM;

Occurrence and Distribution of Persistent Organic Pollutants (POPs) in Amphibian Species: Implications from Biomagnification Factors Based on Quantitative Fatty Acid Signature Analysis

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