Development and Application of Portable Multi-wavelength Spectroscopic Rapid Detector for Organic Pollutants
10.19756/j.issn.0253-3820.231353
- VernacularTitle:多波长便携式有机污染物光谱快速检测装置的研制及应用
- Author:
Yu-Ping CHEN
1
;
Jia-Chuan PAN
;
Yong-Qian LEI
;
Chang-Yu LIU
;
Jian-Bo JIA
;
Peng-Ran GUO
Author Information
1. 五邑大学环境与化学工程学院,江门市五邑大学合成化学与清洁生产重点实验室,江门 529000;广东省科学院测试分析研究所(中国广州分析测试中心),广东省化学测量与应急检测技术重点实验室,广州 510070;广东省科学院测试分析研究所(中国广州分析测试中心),广东省水环境污染在线监测工程技术研究中心,广州 510070
- Keywords:
Fluorescence spectroscopy;
Multi-wavelength ultraviolet light-emitting diode;
Surface water;
Polycyclic aromatic hydrocarbons;
Rapid detection
- From:
Chinese Journal of Analytical Chemistry
2024;52(5):653-663,中插1-中插9
- CountryChina
- Language:Chinese
-
Abstract:
A portable multi-wavelength spectral detector was developed for on-site,rapid and accurate detection of organic pollutants in surface water using ultraviolet light-emitting diodes(UV-LEDs)and the corresponding spectral detection method was built.By measuring the fluorescence spectrum and absorption light intensity and combining with the multi-wavelength spectral correlation calculation method to analyze the target,the developed detector was able to qualitatively and quantitatively detect organic pollutants that responded in the UV-light range of 260-370 nm.The proposed detector was used to detect polycyclic aromatic hydrocarbons(PAHs)and Rhodamine B.The linear ranges of anthracene and Rhodamine B in absorption mode were 10-100 and 8.5-100 mg/L,respectively.In fluorescence mode,the linear ranges for anthracene and Rhodamine B were 0.006-50 and 0.02-0.781 mg/L,correspondingly.The absorption/fluorescence concurrent mode could extend the detection ranges of anthracene and Rhodamine B to 0.006-100 and 0.02-100 mg/L,respectively.The recoveries of PAHs in surface water ranged from 97.4%to 105.1%for anthracene and 84.5%to 91.2%for anthracene,naphthalene,and pyrene in absorption and fluorescence modes,respectively.The method was accurate in both modes.The mixtures containing PAHs were identified by the proposed method under the optimized multi-wavelength spectral correlation calculation.The results demonstrated that the method could achieve a similarity of 75%or more when identifying two different concentrations of solutions containing a single or a mixture of targets within the linear concentration range of the targets.However,the similarity dropped to less than 25%when identifying two solutions of different substances.The proposed method had excellent recognition abilityof targets.The proposed detector and method combined fluorescence and absorption spectroscopy,which could expand the application of spectroscopy in the in situ rapid identification and detection of pollutants such as PAHs in surface water.
