V.I.Il'ichev Pacific Oceanological Institute FEB RAS, 43 Baltiyskaya Str., Vladivostok 690041, Russia.
Institute of Chemistry FEB RAS, 159 Prospect 100-let Vladivostoku, Vladivostok 690022, Russia.
Int J Environ Res Public Health. 2020 Aug 19;17(17):6019. doi: 10.3390/ijerph17176019.
The seasonal polycyclic aromatic hydrocarbon (PAH) variability was studied in the estuaries of the Partizanskaya River and the Tumen River, the largest transboundary river of the Sea of Japan. The PAH levels were generally low over the year; however, the PAH concentrations increased according to one of two seasonal trends, which were either an increase in PAHs during the cold period, influenced by heating, or a PAH enrichment during the wet period due to higher run-off inputs. The major PAH source was the combustion of fossil fuels and biomass, but a minor input of petrogenic PAHs in some seasons was observed. Higher PAH concentrations were observed in fresh and brackish water compared to the saline waters in the Tumen River estuary, while the PAH concentrations in both types of water were similar in the Partizanskaya River estuary, suggesting different pathways of PAH input into the estuaries. The annual riverine PAH mass flux amounted to 0.028 t/year and 2.5 t/year for the Partizanskaya River and the Tumen River, respectively. The riverine PAH contribution to the coastal water of the Sea of Japan depends on the river discharge rather than the PAH level in the river water.
本研究调查了日本海最大的跨界河流之一图们江和北韩的礼成江的季节性多环芳烃 (PAH) 变化。PAH 水平全年普遍较低；然而，PAH 浓度根据两种季节性趋势之一增加，这两种趋势要么是受供暖影响的寒冷期 PAHs 增加，要么是由于更高的径流量输入导致的湿润期 PAH 富集。主要的 PAH 来源是化石燃料和生物质的燃烧，但在某些季节观察到了少量的源自石油的 PAH 输入。与图们江河口的咸水相比，礼成江河口的新鲜水和微咸水中的 PAH 浓度更高，而在礼成江河口，两种类型的水的 PAH 浓度相似，这表明 PAH 输入到河口的途径不同。每年河流输送的 PAH 质量通量分别为 0.028 t/年和 2.5 t/年，对应于礼成江和图们江。河流输送的 PAH 对日本海沿海水的贡献取决于河流径流量，而不是河水中的 PAH 水平。
