Sustainable Environment Research Center, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Mar Pollut Bull. 2024 Sep;206:116759. doi: 10.1016/j.marpolbul.2024.116759. Epub 2024 Jul 29.
The impact of polycyclic aromatic hydrocarbons (PAHs) on the marine food web is crucially understudied in the primary trophic system. We evaluated the seasonal dynamics of PAHs in microplankton in a polluted environment (Taiwan), northeastern South China Sea. Replicate size-fractionated microplankton (55-1000 μm) were freeze-dried, and PAHs were extracted with a 1:1 v/v ratio of acetone: n-hexane, then analyzed using GC-MS. Total PAHs ranged between 68 and 2548 ng/g dw in microplankton, greatest during spring (130-2548 ng/g), followed by autumn (135-772 ng/g) and summer (44-423 ng/g). Spatial distribution varied through seasons but was higher in the southern part (S6 > S4 > S5 > S2 > S3 > S1 > S7), dominated by higher-ring PAHs from mixed pyrogenic and petrogenic sources. PAHs are significantly correlated with environmental factors, especially in colder seasons and lower salinity areas. Suspended matter and plankton influenced PAH transport and partitioning seasonally. Plankton's PAHs seasonal changes and environmental influences are revealed in an anthropic environment.
多环芳烃 (PAHs) 对海洋食物网的影响在初级营养系统中研究得还很不够。我们评估了受污染环境（台湾）、中国南海东北部中小浮游生物中 PAHs 的季节性动态。对大小分级的浮游生物（55-1000μm）进行了冷冻干燥，并用 1:1（v/v）丙酮：正己烷的比例提取 PAHs，然后使用 GC-MS 进行分析。浮游生物中的总 PAHs 范围在 68 到 2548ng/gdw 之间，春季最高（130-2548ng/g），其次是秋季（135-772ng/g）和夏季（44-423ng/g）。空间分布随季节变化，但南部地区较高（S6>S4>S5>S2>S3>S1>S7），主要来自混合生源和生源来源的高环 PAHs。PAHs 与环境因素显著相关，特别是在较冷的季节和低盐度地区。悬浮物和浮游生物会季节性地影响 PAH 的传输和分配。在人为环境中，揭示了浮游生物中 PAHs 的季节性变化和环境影响。
