Bisphenol A content detecting method

A detection method and content technology, which is applied in the detection field of bisphenol A content, can solve problems such as the narrowing of the synchronous fluorescence spectrum band, achieve good prediction effect, fast simultaneous resolution and quantitative analysis, and simplify the spectrum

Active Publication Date: 2014-04-23
XIAMEN UNIV
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Problems solved by technology

Compared with the conventional fluorescence analysis method, the simultaneous fluorescence spectrum band of bisphenol A is narrowed, but it is still interfered by phenol, octylphenol and nonylphenol at the same time. In order to accurately and quantitatively detect bisphenol A, it is necessary to solve the interference effect

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  • Bisphenol A content detecting method

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Embodiment 1

[0031] For the preparation of mixed standard solutions of bisphenol A, phenol and octylphenol, 37 mixed standard solution samples composed of three kinds of phenols in different concentration ratios were randomly divided into two groups, and one group was a calibration set, including 30 three kinds of phenols. The mixed standard solutions of phenols; the other set is a verification set, including 7 mixed standard solutions of three kinds of phenols. The real concentration values ​​of bisphenol A in 37 samples were calculated according to the designed concentration ratio, and the concentration ratio of bisphenol A, phenol, and octylphenol in each sample calibration set of the quantitative calibration model is shown in Table 1. Table 2 shows the content and predicted recovery of bisphenol A in artificially synthesized samples predicted by the established PLS quantitative calibration model.

[0032] Table 2

[0033]

[0034] The content of bisphenol A is detected by the const...

Embodiment 2

[0045] The established quantitative calibration model was used to predict the content of bisphenol A in actual samples to verify the applicability of the method. Bisphenol A in polycarbonate plastics was extracted by soaking method. Six samples of the same polycarbonate sample were pipetted, and the constant-wavelength synchronous fluorescence spectrum of the soaking solution was scanned when the wavelength difference ? was 80nm. The established quantitative calibration model was used to predict the concentration of bisphenol A. The established quantitative calibration model predicted the content of bisphenol A in soaked samples and its relative standard deviation is shown in Table 4.

[0046] Table 4

[0047]

[0048] The average content of bisphenol A in the sample is 0.51 μg / g, the standard deviation of 6 parallel measurements is 0.06 μg / g, and the relative standard deviation is 11.7%. It can be seen that the reproducibility of the present invention meets the requirement...

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Abstract

The invention discloses a bisphenol A content detecting method relating to bisphenol A and provides a synchronous fluorescence spectrum and partial least squares combined bisphenol A content detecting method. The bisphenol A content detecting method comprises the following steps: (1) preparing a mixed standard solution as a sample calibration set and scanning a constant-wavelength synchronous fluorescence spectrum of the sample calibration set, wherein the mixed standard solution is composed of bisphenol A, phenol and octyl phenol in different concentration ratios; (2) establishing a quantitative calibration model between the content of the bisphenol A and the strength of the constant-wavelength synchronous fluorescence spectrum by using partial least squares; (3) predicting the artificially-synthesized sample calibration set by using the quantitative calibration model obtained in the step (2), and solving the linear fitting relationship between a predicted value of each sample and a known reference value; and (4) scanning the constant-wavelength synchronous fluorescence spectrum of the sample to be detected, and predicting through the quantitative calibration model to obtain the content of the bisphenol A in the sample to be detected. The bisphenol A content detecting method is good in effectiveness, high in reliability and good in predicting effect for the bisphenol A in the sample to be detected.

Description

technical field [0001] The invention relates to bisphenol A, in particular to a method for detecting bisphenol A content using synchronous fluorescence spectrum combined with partial least square method. Background technique [0002] Bisphenol A (English name Bisphenol A, abbreviated name BPA), full name 2,2-bis(4-hydroxyphenyl)propane, is formed by catalytic condensation of two molecules of phenol and one molecule of acetone under acidic conditions. [0003] Bisphenol A is the main raw material for the production of polycarbonate and epoxy resin (EP), and is also used as a stabilizer for phenolic resin, plastic polyester, antioxidant and polyvinyl chloride (PVC) (N.Kuroda, Y.Kinoshita , Y. Sun, M. Wada, N. Kishikawa, K. Nakashima, T. Makino, H. Nakazawa. Journal of Pharmaceutical and Biomedical Analysis, 2003, 30: 1743-1749.). [0004] Due to its high strength, stability, high elasticity and low density, polycarbonate is widely used in food and medicine storage, manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N1/28G06F19/00
Inventor 李耀群钟秀娣王文毅李秀英付东赛吴平平
Owner XIAMEN UNIV
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