Chizhova Tatiana, Koudryashova Yuliya, Patrushev Mikhail, Kaplunenko Dmitriy
Pacific Oceanological Institute of Far Eastern Branch, Russian Academy of Sciences, Baltiyskaya Str. 43, 690041 Vladivostok, Russian Federation.
Institute of Chemistry of Far Eastern Branch, Russian Academy of Sciences, prosp. 100-letiya Vladivostoka, 159, 690022 Vladivostok, Russian Federation.
Mar Pollut Bull. 2025 Oct;219:118235. doi: 10.1016/j.marpolbul.2025.118235. Epub 2025 Jun 19.
The study presents the first data on PAH levels and associated environmental risks in the sediments of Peter the Great Bay, the largest bay in the northern Sea of Japan. The total 14PAH concentrations in the sediment ranged from 27 to 2432 ng/g, with an average value of 553 ng/g. The isomer concentration ratios and Principal Component Analysis revealed that the PAHs were mainly derived from coal combustion. The spatial PAH distribution was mainly dictated by anthropogenic load (shipping and urban runoff) and deposition regime exhibit enhanced capacity for PAH retention and burial in the inner shelf. Fine fractions (silt and clay) and organic carbon were significantly positively correlated with the total PAH content. Comparisons with sediment quality guidelines (ERL/ERM, TEL/PEL) showed low and possible ecological risk in the location under the influence of the Tumen River runoff and the urban coastal area. However, the guidelines for total OC-normalized PAHs determined that the sediments are of low risk for benthic animals. The results of toxic and mutagenic equivalence quotients (TEQ and MEQ) revealed a hotspot of carcinogenic and mutagenic PAH activity in the sediments of Port Vladivostok outer harbor. According to TEQ and MEQ values, fine-grained sediments in Peter the Great Bay demonstrated 3-4 times higher carcinogenic and mutagenic activity compared to coarse sandy sediments.
该研究提供了关于日本海北部最大海湾——彼得大帝湾沉积物中多环芳烃（PAH）水平及相关环境风险的首批数据。沉积物中14种PAH的总浓度范围为27至2432纳克/克，平均值为553纳克/克。异构体浓度比和主成分分析表明，PAH主要来源于煤炭燃烧。PAH的空间分布主要受人为负荷（航运和城市径流）的影响，沉积模式显示内大陆架具有增强的PAH保留和埋藏能力。细颗粒部分（粉砂和黏土）以及有机碳与PAH总含量显著正相关。与沉积物质量准则（ERL/ERM、TEL/PEL）的比较表明，在图们江径流和城市沿海地区影响下的该区域存在低且可能的生态风险。然而，总有机碳归一化PAH的准则确定这些沉积物对底栖动物的风险较低。毒性和致突变当量商（TEQ和MEQ）的结果显示，符拉迪沃斯托克外港沉积物中存在致癌和致突变PAH活性热点。根据TEQ和MEQ值，彼得大帝湾的细颗粒沉积物与粗砂质沉积物相比，致癌和致突变活性高出3至4倍。
