Distribution of PAHs in the northwestern part of the Japan Sea

作者：Chizhova T^*; Hayakawa K; Tishchenko P; Nakase H; Koudryashova Yu

来源：Deep Sea Research Part II: Topical Studies in Oceanography , 2013, 86-87: 19-24.

DOI：10.1016/j.dsr2.2012.07.042

• Polycyclic aromatic hydrocarbons
• Japan Sea
• Seawater
• Particulate phase
• Dissolved phase

Surface water samples were collected at 13 stations in the Japan Sea and filtered through a glass fiber membrane (pore size 0.5 mu m). The vertical distribution of PAHs (nine points from depths between 2 m and 3300 m) were measured at one station. Thirteen PAHs having 3-6 rings in the dissolved and particulate phases were determined by HPLC with fluorescence detection. The mean concentration of total PAHs on the seawater surface was 8.5 ng/L. The mean concentrations in the dissolved and particulate phases for surface seawater were 5.6 ng/L and 2.7 ng/L, respectively. In the dissolved phase, 3-ring PAHs were the largest contributor, and 5-ring or more PAHs were in low ratio. Also, concentrations of PAHs in the particulate phase were dominated by 3-ring and 4-ring PAHs, but ratio of 3-ring PAHs was lower than in dissolved phase. Maximum of concentrations of PAHs in the dissolved (6.5 ng/L) and particulate (10.6 ng/L) phases were found for a depth 300 m. The possible source of PAHs is the atmosphere.

• 出版日期2013-3
• 单位河北医科大学