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	A novel baseline-correction method for standard addition based derivative spectra and its application to quantitative analysis of benzo(a)pyrene in vegetable oil samples
	Li, Na ; Li, Xiu-Ying ; Zou, Zhe-Xiang ; Lin, Li-Rong ; Lin LR(林丽榕) ; Li, Yao-Qun ; Li YQ(李耀群)
	2011-05-18
英文摘要	In the present work, a baseline-correction method based on peak-to-derivative baseline measurement was proposed for the elimination of complex matrix interference that was mainly caused by unknown components and/or background in the analysis of derivative spectra. This novel method was applicable particularly when the matrix interfering components showed a broad spectral band, which was common in practical analysis. The derivative baseline was established by connecting two crossing points of the spectral curves obtained with a standard addition method (SAM). The applicability and reliability of the proposed method was demonstrated through both theoretical simulation and practical application. Firstly, Gaussian bands were used to simulate 'interfering' and 'analyte' bands to investigate the effect of different parameters of interfering band on the derivative baseline. This simulation analysis verified that the accuracy of the proposed method was remarkably better than other conventional methods such as peak-to-zero, tangent, and peak-to-peak measurements. Then the above proposed baseline-correction method was applied to the determination of benzo(a) pyrene (BaP) in vegetable oil samples by second-derivative synchronous fluorescence spectroscopy. The satisfactory results were obtained by using this new method to analyze a certified reference material (coconut oil, BCR (R)-458) with a relative error of -3.2% from the certified BaP concentration. Potentially, the proposed method can be applied to various types of derivative spectra in different fields such as UV-visible absorption spectroscopy, fluorescence spectroscopy and infrared spectroscopy.; National Natural Science Foundation of China[20975084]; Science and Technology program of Fujian Province[2009Y0046]; 973 program of China[2007CB935600]
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1039/c0an00751j]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Li, Na,Li, Xiu-Ying,Zou, Zhe-Xiang,et al. A novel baseline-correction method for standard addition based derivative spectra and its application to quantitative analysis of benzo(a)pyrene in vegetable oil samples[J],2011.
APA	Li, Na.,Li, Xiu-Ying.,Zou, Zhe-Xiang.,Lin, Li-Rong.,林丽榕.,...&李耀群.(2011).A novel baseline-correction method for standard addition based derivative spectra and its application to quantitative analysis of benzo(a)pyrene in vegetable oil samples..
MLA	Li, Na,et al."A novel baseline-correction method for standard addition based derivative spectra and its application to quantitative analysis of benzo(a)pyrene in vegetable oil samples".(2011).

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