Abstract The Daesan industrial complex is one of the largest petrochemical and oil refinery industrial complexes in South Korea, which is believed to be a major source of polycyclic aromatic hydrocarbons (PAHs). Total suspended particle (TSP) samples (n = 84) were seasonally collected at two industrial sites and one residential site, and 19 PAHs were analyzed. Concentrations of individual PAHs ranged from 0.01 to 2.52 ng/m3, and annual mean concentrations of Σ19 PAHs at Sites 1, 2, and 3 were 5.88, 4.52, and 5.08 ng/m3, respectively. The concentrations of Σ19 PAHs in warm seasons (spring and summer) were lower than those in cold seasons (autumn and winter). Annual fractions of low molecular weight (LMW)-PAHs (2–3 rings, 12.1%) and high molecular weight (HMW)-PAHs (4–7 rings, 87.9%) indicated a strong contribution of thermal processes. Significant correlations between Σ19 PAHs and TSP (p

中文翻译：

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韩国西海岸某石化炼油工业区颗粒状多环芳烃（PAHs）季节特征

摘要 大山工业园区是韩国最大的石化和炼油工业园区之一，被认为是多环芳烃 (PAHs) 的主要来源。总悬浮颗粒 (TSP) 样品 (n = 84) 在两个工业场地和一个住宅场地季节性收集，并分析了 19 种多环芳烃。单个 PAH 的浓度范围为 0.01 至 2.52 ng/m3，站点 1、2 和 3 的 Σ19 PAH 年平均浓度分别为 5.88、4.52 和 5.08 ng/m3。Σ19 PAHs 的浓度在暖季（春季和夏季）低于寒冷季节（秋季和冬季）。低分子量 (LMW)-PAHs（2-3 环，12.1%）和高分子量 (HMW)-PAHs（4-7 环，87.9%）的年度分数表明热过程的重要贡献。