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Second-order Calibration Algorithms Coupled with Three-dimensional Flourescence with Application to Food and Medicine Analysis

Author: CaoYing
Tutor: WuHaiLong
School: Hunan University
Course: Analytical Chemistry
Keywords: Chemometrics Second - order correction method Three-dimensional fluorescence spectroscopy Hydrocortisone Terazosin Taurine Riboflavin
CLC: TQ460.72
Type: Master's thesis
Year: 2008
Downloads: 144
Quote: 1
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Abstract


The chemometric is an emerging chemical subdiscipline. The paper first outlined in the introduction of the background of chemometrics development history and Research, and then on the second correction chemometrics unique core research areas focuses on, including a three-dimensional data matrix tri-linear model and algorithm development. Then briefly chemometric methods in recent years in the food, pharmaceutical analysis in the field of application. Finally, the combination of the second-order correction method with three-dimensional fluorescence spectroscopy analysis and detection in food and medicine for complex matrix (food, body fluids, etc.), to solve a mixed system of multi-component fluorescence spectra overlap caused by difficult to distinguish, can achieve direct rapid quantitative determination of unknown interference exists under a complex system components of interest, provides a new approach for complex system analysis of the components of interest detection, pioneering analysis of food, medicine applications. Chapter Two parallel factor analysis (Parallel factor analysis, PARAFAC) second-order correction algorithms and full rank parallel factor analysis (FRA-PARAFAC) algorithm combined with a three-dimensional fluorescence spectroscopy to the quantitative analysis of human urine samples hydrogenated cortisone. The weak fluorescence hydrocortisone with concentrated sulfuric acid intermediates can produce strong fluorescence and a linear relationship, while the concentration of intermediates and the concentration of the initial hydrocortisone. Advantage of this nature, the combination of three-dimensional digital matrix trilinear decomposition algorithm to distinguish, and then through the second-order correction to achieve an accurate quantitative determination of human urine samples hydrocortisone indirect. The two algorithms are similar and satisfactory results can be obtained. Chapter III, in the case of a simple pre-treatment samples of human blood terazosin directly and quickly measured. The three algorithms parallel factor analysis (Parallel factor analysis, PARAFAC), alternating trilinear decomposition (Alternating Arilinear Decomposition, ATLD) Alternating Penalty Trilinear Decomposition (Alternating Penalty Trilinear Decomposition, APTLD) excitation emission matrix three-dimensional fluorescence data parsing three algorithms obtained results very close, can be satisfied with the predicted results, the background interference coexist under the rapid detection of terazosin provide a reliable new method. Taurine as a high-quality nutrients for the promotion of human health have a variety of effects. In the fourth chapter of this paper, the use of alternating fitting residue (Alternating Fitting Residue AFR) second-order correction algorithms, combined with three-dimensional fluorescence detection of functional drinks Red Bull taurine ingredients, the algorithm has been satisfactory prediction results. This method is only a simple derivative reaction process can achieve direct quantitative determination of taurine unknown fluorescent background interference. Chapter V, through excitation - emission matrix fluorescence method for three-dimensional data, and then were applied parallel factor analysis (PARAFAC), the alternating trilinear the decomposition (ATLD) and since the weighted alternating trilinear decomposition (Self-weighted Alternating Trilinear Decomposition, SWATLD) kinds of algorithms, the resulting three-dimensional response data matrix to be resolved, in order to achieve beverage background interference coexistence riboflavin direct rapid determination, without any separation process of the sample. Three algorithms obtained analysis results are very close, can be satisfied with the predicted results, background interference coexistence provides a reliable method for the rapid detection of riboflavin under.

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