首页|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

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

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  • 国家科技期刊平台
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针对地表水中有机污染物现场、快速和准确检测的需求,采用紫外发光二极管(UV-LED)研制了一种多波长便携式光谱检测装置,并开发了相应的光谱检测方法.通过测量荧光光谱和吸收光强度,结合多波长光谱相关性计算方法对目标物进行分析,可对在260～370 nm紫外区有响应的有机污染物进行定性和定量检测.应用本装置和建立的方法对多环芳烃(PAHs)和罗丹明B进行检测,在吸收模式下,蒽和罗丹明B的线性范围分别为10～100 mg/L和8.5～100 mg/L;在荧光模式下,蒽和罗丹明B的线性范围分别为0.006～50 mg/L和 0.02～0.78 mg/L;在吸收/荧光双模式下,蒽和罗丹明B的检测范围可分别扩大到 0.006～100 mg/L和0.02～100 mg/L.在吸收和荧光模式下,本方法检测地表水中PAHs的加标回收率分别为97.4%～105.1%(蒽)和84.5%～91.2%(蒽、萘和芘),两种模式下均具有良好的检测准确性.采用优化的多波长光谱相关性计算方法对PAHs混合物进行识别验证,结果表明,在目标物的线性浓度范围内,本方法用于识别含有单一或混合目标物的两种不同浓度溶液时,其相似度可达到75%以上;在识别两种不同物质的溶液时,相似度低于25%,表明本方法对目标物具有较好的识别性.本研究将荧光和吸收光谱双检测模式结合,拓展了光谱法在水质污染物快速识别和检测中的应用范围,为地表水中PAHs的现场快速检测提供了有效手段.
Development and Application of Portable Multi-wavelength Spectroscopic Rapid Detector for Organic Pollutants
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.

Fluorescence spectroscopyMulti-wavelength ultraviolet light-emitting diodeSurface waterPolycyclic aromatic hydrocarbonsRapid detection

陈宇萍、潘佳钏、雷永乾、刘长宇、郏建波、郭鹏然

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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

荧光光谱 多波长紫外发光二极管 地表水 多环芳烃 快速检测

国家自然科学基金国家自然科学基金国家自然科学基金广东省重点领域研发计划广东省教育厅项目广东省教育厅项目广东省教育厅项目广东省基础与应用基础研究基金

2197409722274117422060432020B11113500022020KSYS0042020ZDZX20152022ZDJS0272023A1515011156

2024

10.19756/j.issn.0253-3820.231353

分析化学
中国化学会 中国科学院长春应用化学研究所

分析化学

CSTPCD北大核心
影响因子：1.423
ISSN：0253-3820
年,卷(期)：2024.52(5)
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