Rapid evaluation method based on DOM for water quality by microlaser fluorescence spectrometer
- PDF / 876,548 Bytes
- 5 Pages / 595.276 x 790.866 pts Page_size
- 56 Downloads / 171 Views
Rapid evaluation method based on DOM for water quality by microlaser fluorescence spectrometer Zhaoshuo Tian1 · Zongjie Bi1 · Yiwei Wang1 · Hongyan Zhao1 Received: 9 July 2019 / Accepted: 20 December 2019 / Published online: 18 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this paper, we report a method for rapid water quality evaluation based on laser-excited dissolved organic matter (DOM) fluorescence and water Raman peak. A formula, which results in the score from 0 to 100, was proposed to evaluate water quality. We first employed this method to evaluate the self-prepared water samples with humic acid or fulvic acid under different concentrations from 0.01 mg/L to 8 mg/L. In these experiments, the water samples were tested by our self-customed microlaser spectrometer. The good correlations between fluorescence intensity of DOM and concentrations of humic acid or fulvic acid were found. These results indicated that the method we proposed is reasonable on the water quality assessment. Furthermore, we evaluated water samples from five different sources and the results consisted well with the general knowledge of the water quality. These results demonstrated that this method offers a number of advantages for water quality evaluation including compact configuration, rapid test process, simple operation, and low cost.
1 Introduction Water is indispensable in our lives, and attention is being increasingly focused on water quality issues. Many measurements about water quality have focused on total dissolved solids, but the method cannot fully reflect the water quality degree. In addition, the measurement for other parameters of the water such as total organic carbon and chemical oxygen demand is complex, time consuming, and cannot provide the real-time information of water quality changes, which is not suitable for on-site rapid detection. DOM can reflect water pollution degree, which is also one of important indicators for water quality monitoring. With the development of spectral technology, fluorescence spectroscopy has been suggested as a potential monitoring tool for water quality monitoring given its high sensitivity and selectivity [1–4]. Many researches have focused on the detection of DOM in water by fluorescence method [5, 6]. Previous research has identified relationships between fluorescence and organic [7, 8]. Orlov et al. [9] applied fluorescent diagnosis of organic
* Hongyan Zhao [email protected] Zhaoshuo Tian [email protected] 1
Harbin Institute of Technology at Weihai, Weihai, China
pollution in the water environment for the identification of hydrocarbons in the open sea. Marhaba [10] utilized fluorescent properties of dissolved organic matter (DOM) fractions in water and developed a model to predict six DOM fractions. Chen et al. [11] detected the concentration of DOM with fluorescence spectroscopy. Three-dimensional fluorescence spectrometry has been widely used to detect dissolved organic matter (DOM) in the water. However, since the wavelengt
Data Loading...
