Appling fluorescence spectroscopy with absolute principal component coefficient to explore dynamic migration of DOM fractions from an urbanized river during torrential rainfall

IF 4.6 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2024-03-27 DOI:10.1016/j.saa.2024.124206

Shengqiang Tu , Qingqian Li , Lei Nie, Hongjie Gao, Huibin Yu

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引用次数: 0

Abstract

This research delves into the dynamic interplay between urbanization and the characteristics of Dissolved Organic Matter (DOM) in the Anyang River, particularly under the stress of torrential rain. The motivation stems from a critical need to decipher how urban landscapes influence water quality, focusing on the intricate transformations and movements of DOM. Employing advanced fluorescence spectroscopy techniques like Excitation-Emission Matrices (EEM) and Parallel Factor Analysis (PARAFAC), the study meticulously differentiates DOM compositions in urban and agricultural settings. It unveils a pronounced distinction, with urban streams showing elevated proteinaceous DOM from wastewater, contrasting with the humic substances prevalent in agricultural runoff. The analysis also captures how intense rainfall events catalyze significant shifts in DOM profiles, thereby emphasizing the need for tailored water quality management strategies in urbanized catchments. This comprehensive approach not only bridges gaps in understanding the urban impact on riverine ecosystems but also sets a foundation for future research and policy development in the face of escalating environmental changes.

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利用荧光光谱和绝对主成分系数探索暴雨期间城市化河流中 DOM 成分的动态迁移情况

本研究深入探讨了城市化与安阳河中溶解有机物（DOM）特性之间的动态相互作用，尤其是在暴雨的压力下。研究动机源于解读城市景观如何影响水质的迫切需要，重点关注 DOM 的复杂转化和移动。这项研究采用了先进的荧光光谱技术，如激发-发射矩阵（EEM）和平行因子分析（PARAFAC），对城市和农业环境中的 DOM 成分进行了细致的区分。它揭示了一个明显的区别，即城市溪流中来自废水的蛋白质 DOM 含量较高，与农业径流中普遍存在的腐殖质形成鲜明对比。该分析还捕捉到了强降雨事件如何催化 DOM 特征的显著变化，从而强调了在城市化集水区制定有针对性的水质管理策略的必要性。这种综合方法不仅弥补了人们在理解城市对河流生态系统的影响方面存在的差距，还为今后面对不断升级的环境变化开展研究和制定政策奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.