Tissue-specific distribution and bioaccumulation of cyclic and linear siloxanes in South Korean crucian carp (carassius carassius)
Autor: | Hyeon-Seo Cho, Wenting Wang, Jeong-Eun Oh, Kyungtae Kim, Kyunghwa Park |
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Rok vydání: | 2021 |
Předmět: |
Carps
biology Siloxanes Chemistry Health Toxicology and Mutagenesis Carassius carassius Sediment Biota General Medicine Toxicology biology.organism_classification Pollution River water Bioaccumulation Environmental chemistry Republic of Korea Crucian carp Tissue specific Animals Water Pollutants Chemical Environmental Monitoring |
Zdroj: | Environmental pollution (Barking, Essex : 1987). 288 |
ISSN: | 1873-6424 |
Popis: | The occurrence and distribution of cyclic and linear siloxanes were investigated in South Korean river water and sediment, with a special focus on crucian carp tissues, to evaluate the residual status and potential bioaccumulation of siloxanes. The total siloxanes median concentrations observed in this study were 1495 ng/L in river water, 39.2 ng/g-dry weight [dw] in sediment, and 41.7 ng/g-wet weight [ww] in crucian carp muscle. Cyclic siloxanes (D3-D6) were predominant in all matrices, and D5 (mean:81%) was more abundant in biota tissues than in river water (30%) and sediment (26%) samples. Specifically, positive correlations between D5 concentrations and crucian carp sizes (p 0.01, Spearman) as well as the relatively high estimated biota-sediment accumulation factor value of D5 (D5: 2.31), suggest the high bioaccumulative property of D5 in biota. However, no bioaccumulation potentials were observed for D3, D4, D6, and L3-L17 in this field-scale study. The distributions of major linear siloxanes (L7-L14) in crucian carp gills (17%) and gonads (21%) were higher than in other tissues (brain, 9.6%; liver, 2.6%; muscle, 1.5%). Moreover, relatively high tissue/plasma ratios were observed for linear siloxanes (L7-L10: 1.79-2.12) compared to cyclic siloxanes (D4-D6: 0.829-1.18) (p 0.01, Mann Whitney U test), which indicated the higher transportability of linear siloxanes to fish tissues than cyclic siloxanes. |
Databáze: | OpenAIRE |
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