【摘要】 采用气相色谱-质谱联用仪（GC-MS）对2020年6月采集的深圳湾海域16个站位的表层沉积物样品中16种多环芳烃含量进行分析测定。研究结果表明：深圳湾海域表层沉积物中16种多环芳烃浓度范围为410～2 486 ng·g^-1,平均浓度为977.67 ng·g^-1,样品中多环芳烃以高环（4～6环）为主，具体分布特征为：5环（38.44%）>3环（21.00%）>4环（19.96%）>6环（12.33%）>2环（8.28%）;通过多环芳烃轻重比值法和特征分子比值法分析认为，煤、木材和石油的燃烧对深圳湾表层沉积物中多环芳烃的贡献率约为88%,是其主要来源；应用沉积物质量基准法（SQGs）对深圳湾海域表层沉积物中多环芳烃进行分析得出：二苯并（a、h）蒽具有极大生态风险，萘、苊烯、芴具有潜在生态风险，建议采取政策限制和生化方法降解等方式进行PAHs污染防治。更多还原

【Abstract】 The GC-MS analysis method was used to analyze the 16 multi-ring aromatic hydrocarbons in the surface deposition samples of Shenzhen bay in June 2020. The results showed that the 16 kinds of polycyclic aromatic hydrocarbon concentrations in the surface deposit in Shenzhen bay were 410 to 2486 ng · g^-1, the average concentration was 977.67 ng · g^-1, the overall was in moderate contamination level, and the polycyclic aromatic hydrocarbon in the sample high ring（4～6 ring） was mainly 5 ring（38.44%）> 3 ring（21.96%）> 6 ring（12.33%）> 2 ring（8.28%）. Through the multi-cyclic aromatic hydrocarbon lightric ratio, the combustion of petroleum, coal and wood on the contribution rate of polycyclic aromats in Shenzhen bay’s surface sediments was about 88%, which was the main source. Based on the reference method（SQGS）, the analysis of the polycyclic aromatic hydrocarbons in the surface sediments of Shenzhen bay showed that the diphenyl（A, H） had great ecological risks. The naphthalene and fluorene had potentially ecological risks. Measures for pollution control must be used.更多还原