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1.中国地质大学(武汉) 环境学院,湖北 武汉 430078
2.东京工业大学 土木与环境工程学院, 东京都 目黑区 152-8550
付庆龙,博士,研究员,研究方向:溶解性有机质组成与环境效应研究,E-mail:fuqinglong@cug.edu.cn
收稿日期:2024-08-26,
修回日期:2024-09-19,
录用日期:2024-10-17,
纸质出版日期:2025-05-15
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游芊,藤井学,付庆龙.太阳光照对东京湾海水溶解性有机质化学多样性的影响[J].分析测试学报,2025,44(05):774-780.
YOU Qian,Fujii Manabu,FU Qing-long.Chemodiversity of Dissolved Organic Matter in Seawater of Tokyo Bay Affected by Sunlight Irradiation[J].Journal of Instrumental Analysis,2025,44(05):774-780.
游芊,藤井学,付庆龙.太阳光照对东京湾海水溶解性有机质化学多样性的影响[J].分析测试学报,2025,44(05):774-780. DOI: 10.12452/j.fxcsxb.240826345.
YOU Qian,Fujii Manabu,FU Qing-long.Chemodiversity of Dissolved Organic Matter in Seawater of Tokyo Bay Affected by Sunlight Irradiation[J].Journal of Instrumental Analysis,2025,44(05):774-780. DOI: 10.12452/j.fxcsxb.240826345.
该研究基于傅里叶变换离子回旋共振质谱技术,分析了自然光照对东京湾海岸带海水中溶解性有机质(DOM)化学多样性的影响。结果表明东京湾海岸带海水DOM中具有较高丰度CHO、CHOS和CHON类低芳香化合物。经过光照后,丹宁类和不含N的饱和化合物的数量均有所增加(分别增加60%和62%)。此外,根据有机碳浓度对离子峰的强度值进行归一化处理后发现2 347个木质素类的分子和616个饱和化合物类的分子在太阳光光照后归一化强度有所降低。此外,2 211、975、493和289个木质素类、饱和化合物类、丹宁类和氨基糖类的分子在光照处理后归一化强度值有所增强。研究结果不仅可加深对海岸带海水DOM化学多样性的认识,也为研究水环境中DOM的光环境行为和环境效应提供了重要支撑。
The effect of natural sunlight irradiation on the chemodiversity of coastal seawater dissolved organic matter in the coastal seawater of Tokyo Bay was investigated by Fourier transform-ion cyclotron resonance mass spectrometry(FT-ICR MS). Results of this study revealed that the CHO,CHOS,and CHON compounds with low aromatics were dominant in the coastal seawater dissolved organic matter(DOM) of Tokyo Bay,Japan. After natural sunlight irradiation,the number of tannins-like and N-free saturated compounds increased by 60% and 62%,respectively. In addition,the intensity of the normalized ion peaks(the intensity of the ion peak was normalized by the concentration of organic carbon) of 2 347 lignin-like and 616 saturated compounds decreased by the natural sunlit irradiation;while the intensity of normalized ion peaks of 2 211 lignin-like,975 saturated compounds,493 tannins-like,and 289 aminosugars increased by the natural sunlight irradiation. The results of this study will deepen the understanding of chemodiversity in coastal seawater DOM and provide valuable insights for the photochemical and environmental effects of aquatic DOM.
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