用组合光谱法校正腐植酸对多环芳香烃荧光检测的影响

IF 2.2 3区 化学 Q2 INSTRUMENTS & INSTRUMENTATION
Guimei Dong, Yaping Yu, Yanrong Yang, Mengxiang Cui, Renjie Yang
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引用次数: 0

摘要

多环芳烃(PAHs)广泛分布于土壤和水中,但多环芳烃的荧光光谱分析通常会受到环境中有机物的干扰。本文旨在评估一种在腐殖酸和多环芳烃共存的环境中使用组合光谱技术的校正方法。在本研究中,使用荧光和近红外光谱分析了单一样品和混合样品中不同浓度的腐植酸和苯并[ghi]苝。基于协同效应区间偏最小二乘法建立了混合样品中腐植酸的近红外预测模型,并在 478 nm 波长(苯并[ghi]苝的特征波长)建立了腐植酸荧光光谱标准曲线。根据近红外光谱得出的腐殖酸含量预测混合样品中腐殖酸的荧光强度。最后的校正是通过在相同波长下从混合物的荧光中排除腐殖酸来实现的。校正后的荧光强度与苯并[ghi]苝的浓度呈线性相关,R2 = 0.8362,而校正前的 R2 = 0.3538。这些结果为联合光谱法的校正建模提供了新的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Correction of the Effect of Humic Acids on the Fluorescence Detection of Polycyclic Aromatic Hydrocarbons by Combination Spectroscopy
Polycyclic aromatic hydrocarbons (PAHs) are widely distributed in soil and water, but fluorescence spectroscopy for PAHs is often interfered with organic matter in the environment. The aim of this paper is to evaluate a correction method using combined spectral technology in an environment where humic acids and PAHs coexist. In the present work, humic acids and benzo[ghi]perylene were analyzed in various concentrations using fluorescence and near-infrared (NIR) spectroscopy from single and mixed samples. The NIR prediction model of humic acids in mixed samples was established based on synergy interval partial least squares, and the standard curve of fluorescence spectra for humic acids was established at 478 nm (characteristic wavelength of benzo[ghi]perylene). The fluorescence intensity of humic acids in the mixed sample was predicted from the content derived from the NIR spectra. The final correction was carried out by their exclusion from the fluorescence of the mixture at the same wavelength. The corrected fluorescence intensity was linearly correlated with the concentration of benzo[ghi]perylene with R2 = 0.8362, while R2 = 0.3538 before correction. These results give a new insight into the calibration modeling of the combined spectral method.
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来源期刊
Applied Spectroscopy
Applied Spectroscopy 工程技术-光谱学
CiteScore
6.60
自引率
5.70%
发文量
139
审稿时长
3.5 months
期刊介绍: Applied Spectroscopy is one of the world''s leading spectroscopy journals, publishing high-quality peer-reviewed articles, both fundamental and applied, covering all aspects of spectroscopy. Established in 1951, the journal is owned by the Society for Applied Spectroscopy and is published monthly. The journal is dedicated to fulfilling the mission of the Society to “…advance and disseminate knowledge and information concerning the art and science of spectroscopy and other allied sciences.”
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