Fukuoka Takuya, Mizukawa Kaoruko, Kondo Satomi, Kitayama Chiyo, Kobayashi Shohei, Watanabe Gen, Takada Hideshige
Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan.
Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-0054, Japan.
Mar Pollut Bull. 2024 Sep;206:116753. doi: 10.1016/j.marpolbul.2024.116753. Epub 2024 Jul 31.
Benzotriazole-type ultraviolet stabilizers (BUVSs) are emerging contaminants whose exposure to wildlife is of concern. In this study, we investigated the contamination status of BUVSs in green turtles (Chelonia mydas) breeding at Ogasawara Islands, Japan, through chemical analysis of 10 BUVSs and 26 congeners of polychlorinated biphenyls (PCBs) in adipose tissue (n = 21) and blood plasma (n = 9). BUVSs were detected significant levels in adipose tissue (19 of 21 turtles), and UV-327 (not detected - 14.8 ng/g-lipid, detection frequency: 76 %), UV-326 (not detected - 24.1 ng/g-lipid, 29 %), and UV-328 (not detected - 5.8 ng/g-lipid, 24 %) were frequently detected. Turtles exhibiting sporadically high concentrations of BUVSs (>10 ng/g-lipid) did not necessarily correspond to individuals with high total PCB concentrations (1.03-70.2 ng/g-lipid). The sporadic occurrence pattern of BUVSs suggested that these contaminants in sea turtles cannot be explained solely by diet but are likely derived from plastic debris.
苯并三唑类紫外线稳定剂（BUVSs）是新出现的污染物，其对野生动物的暴露情况令人担忧。在本研究中，我们通过对日本小笠原群岛绿海龟（蠵龟）脂肪组织（n = 21）和血浆（n = 9）中的10种BUVSs和26种多氯联苯（PCBs）同系物进行化学分析，调查了绿海龟体内BUVSs的污染状况。在脂肪组织中检测到了显著水平的BUVSs（21只海龟中有19只），其中UV-327（未检出 - 14.8 ng/g脂质，检出频率：76%）、UV-326（未检出 - 24.1 ng/g脂质，29%）和UV-328（未检出 - 5.8 ng/g脂质，24%）经常被检测到。偶尔表现出高浓度BUVSs（>10 ng/g脂质）的海龟不一定与总PCB浓度高（1.03 - 70.2 ng/g脂质）的个体相对应。BUVSs的零星出现模式表明，海龟体内的这些污染物不能仅用饮食来解释，而可能来自塑料碎片。
