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首页> 外文期刊>Environmental toxicology and chemistry >Tissue Distribution, Growth Dilution, and Species‐Specific Bioaccumulation of Organic Ultraviolet Absorbents in Wildlife Freshwater Fish in the Pearl River Catchment, China
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Tissue Distribution, Growth Dilution, and Species‐Specific Bioaccumulation of Organic Ultraviolet Absorbents in Wildlife Freshwater Fish in the Pearl River Catchment, China

机译：珠江流域野生淡水鱼中有机紫外线吸收剂的组织分布，生长稀释和物种特异性生物富集

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Tissue distributions and body-size dependent and species-specific bioaccumulation of 12 organic ultraviolet absorbents (UVAs) were investigated in 9 species of wildlife freshwater fish from the Pearl River catchment, South China. The concentrations of the 12 UVAs were from 109 to 2320 ng/g lipid weight in the fish tissue samples. The UVAs 2-hydroxy-4-methoxybenzophenone (BP-3), octocrylene (OCR), UV531, and 5 benzotriazole UV stabilizers (UVP, UV329, UV234, UV328, and UV327) were detected in more than half of the fish tissue samples. The UVA UV531 showed an obvious potential for bioaccumulation in the wild freshwater fish, with an estimated bioaccumulation factor (log BAF) and a biota-sediment accumulation factor (BSAF) of 4.54 +/- 0.55 and 4.88 +/- 6.78, respectively. Generally, liver (989 +/- 464 ng/g lipid wt) contained the highest level of UVAs, followed in decreasing order by belly fat (599 +/- 318 ng/g lipid wt), swimming bladder (494 +/- 282 ng/g lipid wt), dorsal muscle (470 +/- 240 ng/g lipid wt), and egg (442 +/- 238 ng/g lipid wt). The bioaccumulation of UVAs in the freshwater wild fish was species specific and compound dependent. Bottom-dwelling detritus-ingesting omnivorous fish contained obviously higher UVA concentrations, suggesting that detritus/sediment ingestion is a significant pathway for exposure of the wild freshwater fish to the UVAs. The UVAs UV531 and BP-3 demonstrated a potential for growth dilution. Metabolism might play a significant role in elimination of the UVAs in the fish tissues, with the highest rate of metabolism in the liver. The UVAs did not demonstrate obvious trophic magnification in the freshwater ecosystem of the Pearl River catchment. More research is warranted to elucidate maternal transfer of the UVAs. Environ Toxicol Chem 2020;39:343-351. (c) 2019 SETAC
机译：在华南珠江流域的9种野生淡水鱼中，研究了12种有机紫外线吸收剂（UVA）的组织分布，体型依赖性和物种特异性生物蓄积性。鱼组织样品中12种UVA的浓度为109至2320 ng / g脂质重量。在一半以上的鱼组织样品中检测到UVA 2-羟基-4-甲氧基二苯甲酮（BP-3），辛二烯（OCR），UV531和5种苯并三唑UV稳定剂（UVP，UV329，UV234，UV328和UV327） 。 UVA UV531在野生淡水鱼中显示出明显的生物蓄积潜力，估计的生物蓄积因子（log BAF）和生物沉积物蓄积因子（BSAF）分别为4.54 +/- 0.55和4.88 +/- 6.78。通常，肝脏（989 +/- 464 ng / g脂质wt）含量最高，其次是腹部脂肪（599 +/- 318 ng / g脂质wt），游泳膀胱（494 +/- 282） ng / g脂质重量），背肌（470 +/- 240 ng / g脂质重量）和鸡蛋（442 +/- 238 ng / g脂质重量）。淡水野生鱼类中UVA的生物蓄积是物种特异性的和化合物依赖性的。底栖杂食性杂食鱼的UVA浓度明显较高，这表明碎屑/沉积物的摄取是野生淡水鱼暴露于UVA的重要途径。 UVAs UV531和BP-3具有潜在的生长稀释作用。代谢可能在消除鱼组织中的UVA中起重要作用，其中肝脏中的代谢率最高。在珠江流域的淡水生态系统中，UVA没有显示出明显的营养放大作用。有必要进行更多的研究来阐明UVA的母体转移。 Environ Toxicol Chem 2020； 39：343-351。 （c）2019年SETAC

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