Visualization of MC-LR in lakes using near-infrared technology

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-03-26 DOI:10.1016/j.watres.2025.123558

Huiyan Chuan , Bingyan Li , Zhaomin Wang , Yue Zhang , Ping Xie , Yong Liu

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引用次数: 0

Abstract

Microcystin-LR (MC-LR), a secondary metabolite produced by cyanobacteria, poses significant ecological and health risks, particularly in lakes, where fluctuations in its concentration directly affect water quality and the living environment of nearby residents. However, the complexity of lake environments and the absence of suitable rapid monitoring tools have made long-term and extensive MC-LR monitoring challenging. This study proposed an effective monitoring tool based on near-infrared (NIR) fluorescence technology for the rapid assessment of MC-LR in lakes. The results demonstrated that the NIR fluorescent probe specifically binds to MC-LR, inducing changes in the fluorescence signal. Fluorescence analysis revealed a significant positive correlation between the probe's signal and MC-LR concentrations in lakes with varying pollution levels. Stepwise multiple linear regression and random forest analyses confirmed that fluorescence signal changes were primarily influenced by MC-LR. Additionally, the probe's long emission wavelength (699–783 nm) reduced background fluorescence interference, while its large Stokes shift (> 100 nm) minimized excitation light interference, significantly enhancing the signal-to-noise ratio of the measurements. The NIR fluorescent probe offers a promising solution for detecting MC-LR in natural lakes, advancing water quality monitoring by providing a rapid and reliable assessment tool.

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利用近红外技术观察湖泊中的 MC-LR

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.