Investigation on the interaction differences of algogenic dissolved organic matter released by Skeletonema costatum with phenanthrene and 9-hydroxyphenanthrene using spectroscopy
Year: 2025
Type: article
Abstract: 利用光谱法原位研究了中肋骨条藻(Skeletonema costatum )在不同生长阶段释放的藻源溶解性有机质（Algogenic dissolved organic matter, ADOM）与菲（Phenanthrene, Phe）及9-羟基菲（9-hydroxyphenanthrene, 9-OHPhe）的相互作用。结果表明，ADOM中类蛋白质组分的比例从延滞期的91%降到衰亡期的77%，类腐殖质组分的比例从9%上升到23%。Phe/9-OHPhe与类腐殖质组分的相互作用更强，其猝灭程度几乎是类蛋白质组分的两倍。此外，短波长类腐殖质和长波长类腐殖质组分与Phe的结合能力大于9-OHPhe，其相互作用参数 Ka值分别为2.83、3.69和2.39、3.05；而类酪氨酸和类色氨酸组分与9-OHPhe相互作用则强于Phe，其Ka值分别为1.87、1.71和1.76、1.38。上述结果有助于深入理解海洋环境中ADOM影响多环芳烃（polycyclic aromatic hydrocarbons, PAHs）与羟基PAHs（hydroxylated polycyclic aromatic hydrocarbons, OH-PAHs）环境行为的异同。
Source: Marine Environmental Science
Authors: Weifan ZHANG, Xixue CHEN, Yaxian ZHU, Yong ZHANG
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7125481783