Detection of Organic Compounds in Water by an Optical Absorbance Method

Sensors

Chihoon Kim³  Joo Beom Eom¹  Soyoun Jung²  Taeksoo Ji³ 

[1] Korea Photonics Technology Institute, Medical Photonics Research Center, 9, Cheomdan venture-ro 108beon-gil, Buk-gu, Gwangju 500-779, Korea;Samsung Display Co. Ltd., Samsung st. 181, Tangjeong-Myeon, Asan 335-741, Korea;School of Electronics and Computer Engineering, Chonnam National University, 300 Youngbong-dong, Buk-gu, Gwangju 500-757, Korea;

关键词: optical system;    absorbance;    total organic carbon;    multiple linear regression;    organic pollutant;   

DOI  :  10.3390/s16010061

来源: mdpi

【 摘 要 】

This paper proposes an optical method which allows determination of the organic compound concentration in water by measurement of the UV (ultraviolet) absorption at a wavelength of 250 nm~300 nm. The UV absorbance was analyzed by means of a multiple linear regression model for estimation of the total organic carbon contents in water, which showed a close correlation with the UV absorbance, demonstrating a high adjusted coefficient of determination, 0.997. The comparison of the TOC (total organic carbon) concentrations for real samples (tab water, sea, and river) calculated from the UV absorbance spectra, and those measured by a conventional TOC analyzer indicates that the higher the TOC value the better the agreement. This UV absorbance method can be easily configured for real-time monitoring water pollution, and built into a compact system applicable to industry areas.

【 授权许可】

CC BY   
© 2016 by the authors; licensee MDPI, Basel, Switzerland.