First Evidence of the Bioaccumulation and Trophic Transfer of Tire Additives and Their Transformation Products in an Estuarine Food Web,Environmental Science & Technology

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First Evidence of the Bioaccumulation and Trophic Transfer of Tire Additives and Their Transformation Products in an Estuarine Food Web
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2024-03-18 , DOI: 10.1021/acs.est.3c10248
Li-Ni Wei ₁ , Nian-Nian Wu _{2,

3} , Ru Xu _{2,

3} , Shan Liu ₂ , Heng-Xiang Li ₂ , Lang Lin ₂ , Rui Hou ₂ , Xiang-Rong Xu ₂ , Jian-Liang Zhao ₁ , Guang-Guo Ying ₁

Affiliation

The discovery of the significant lethal impacts of the tire additive transformation product N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine quinone (6PPD-Q) on coho salmon has garnered global attention. However, the bioaccumulation and trophic transfer of tire additives and their transformation products (TATPs) within food webs remain obscure. This study first characterized the levels and compositions of 15 TATPs in the Pearl River Estuary, estimated their bioaccumulation and trophic transfer potential in 21 estuarine species, and identified priority contaminants. Our observations indicated that TATPs were prevalent in the estuarine environment. Eight, six, seven, and 10 TATPs were first quantified in the shrimp, sea cucumber, snail, and fish samples, with total mean levels of 45, 56, 64, and 67 ng/g (wet weight), respectively. N,N′-Diphenyl-p-phenylenediamine (DPPD) and N,N′-bis(2-methylphenyl)-1,4-benzenediamine (DTPD) exhibited high bioaccumulation. Significant biodilution was only identified for benzothiazole, while DPPD and DTPD displayed biomagnification trends based on Monte Carlo simulations. The mechanisms of bioaccumulation and trophodynamics of TATPs could be explained by their chemical hydrophobicity, molecular mass, and metabolic rates. Based on a multicriteria scoring technique, DPPD, DTPD, and 6PPD-Q were characterized as priority contaminants. This work emphasizes the importance of biomonitoring, particularly for specific hydrophobic tire additives.

中文翻译：

轮胎添加剂及其转化产物在河口食物网中生物累积和营养转移的第一个证据

轮胎添加剂转化产物N- (1,3-二甲基丁基) -N'-苯基-对苯二胺醌(6PPD-Q)对银大麻哈鱼具有显着致死作用的发现引起了全球关注。然而，轮胎添加剂及其转化产物（TATP）在食物网中的生物累积和营养转移仍然不清楚。本研究首先描述了珠江口 15 种 TATP 的水平和组成，估计了它们在 21 种河口物种中的生物累积和营养转移潜力，并确定了优先污染物。我们的观察表明 TATP 在河口环境中普遍存在。首先在虾、海参、蜗牛和鱼样品中定量了 8、6、7 和 10 种 TATP，总平均水平分别为 45、56、64 和 67 ng/g（湿重）。 N , N '-二苯基对苯二胺 (DPPD) 和N , N '-双(2-甲基苯基)-1,4-苯二胺 (DTPD) 表现出高生物累积性。仅发现苯并噻唑具有显着的生物稀释作用，而 DPPD 和 DTPD 根据蒙特卡罗模拟显示出生物放大趋势。 TATP 的生物累积和营养动力学机制可以通过其化学疏水性、分子质量和代谢率来解释。根据多标准评分技术，DPPD、DTPD 和 6PPD-Q 被定性为优先污染物。这项工作强调了生物监测的重要性，特别是对于特定的疏水性轮胎添加剂。

更新日期：2024-03-18

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