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Method for detecting content of bisphenol A

A determination method and content technology, applied in the field of determination of bisphenol A content, to achieve the effect of easy implementation, reliable implementation and reliable method

Active Publication Date: 2010-03-03
PONY TESTING INT GRP SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no method for direct determination of bisphenol A in rubber and plastic products by gas chromatography-mass spectrometry without derivatization.

Method used

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  • Method for detecting content of bisphenol A
  • Method for detecting content of bisphenol A
  • Method for detecting content of bisphenol A

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1 The drawing of standard curve

[0058] Accurately weigh 12.56 mg of bisphenol A standard substance (purity 99.5% Dr. Ehrenstorfer), dissolve it in acetone-dichloromethane (volume ratio 1:1) and set the volume to 25.0 mL, with a concentration of 500 mg / L as the stock solution, and use acetone- Dichloromethane (volume ratio 1:1) was diluted 50 times to a concentration of 10 mg / L, and then diluted to 0.20, 0.50, 1.00, 2.00, 5.00 mg / L standard solutions.

[0059] Use gas chromatography-mass spectrometry to detect the above-mentioned standard liquid for use, take the quantitative ion (M / Z 119) chromatographic peak area as the ordinate, and draw the standard curve with the concentration of the standard liquid for abscissa. The linear equation of the standard curve is Y=6509.95X 2 +56838.90X, the correlation coefficient is R 2 = 0.9996.

Embodiment 2

[0060] The detection of bisphenol A content in the embodiment 2 ABS plastics

[0061] Preparation of sample test solution: Take 1.0 g of crushed ABS plastic solid (accurately weighed to 0.0001 g), put it in a Soxhlet extractor, add 40 mL of acetone-dichloromethane (volume ratio 1:1), and the temperature is 90 ° C Reflux for 10 cycles; take out and cool to room temperature, transfer the extraction solution into a 250mL pear-shaped bottle and wash the container with acetone-dichloromethane (volume ratio 1:1). Concentrate on a rotary evaporator to 1mL test solution, pass through BOND ELUT C18 extraction column (specification: 500mg / 6ml) to purify, use 15mL acetone-dichloromethane (volume ratio 1:1) to rinse, collect eluent. Rotary evaporation The volume of the solution was up to 1ml, and the volume was adjusted to 2mL with acetone-dichloromethane (volume ratio 1:1), and filtered with a 0.45 μm organic phase filter membrane to obtain the sample test solution.

[0062] Repeat the ...

Embodiment 3

[0066] The mensuration of bisphenol A content in the embodiment 3 silicone rubbers

[0067] Preparation of sample test solution: Take 1.0 g of crushed silicone rubber solid sample (accurately weighed to 0.0001 g), put it in a Soxhlet extractor, add 60 mL of acetone-dichloromethane (volume ratio 1:1), and the temperature is 100 ° C Reflux for 15 cycles; take out and cool to room temperature, transfer the extraction solution into a 250mL pear-shaped bottle and wash the container with acetone-dichloromethane (volume ratio 1:1). Concentrate on a rotary evaporator to 1 mL of the test solution, pass through a BOND ELUT C18 extraction column (specification: 500 mg / 6 ml) for purification, rinse with 10 mL of acetone-dichloromethane (volume ratio 1:1), and collect the eluate. The volume of the solution was rotary evaporated to 1ml, and the volume was adjusted to 2mL with acetone-dichloromethane (volume ratio 1:1), and filtered with a 0.45 μm organic phase filter membrane to obtain the ...

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Abstract

The invention provides a method for detecting the content of bisphenol A, comprising the steps: extracting a sample to be detected with organic solvent, condensing the obtained extraction solution, purifying the extraction solution through a C18 solid phase extraction column, taking the organic solvent as leacheate, collecting, condensing and metering the volume of the leacheate and finally filtering the leacheate to obtain sample test solution; then, detecting the sample detecting solution through a gas chromatograph-mass spectrometer according to an external reference method; when the sampleto be measured is a solid sample, crushing the sample to be measured first and carrying out Soxhlet extraction on the sample to be detected; and when the sample to be detected is liquid, and ultrasound extraction is carried out. The method for detecting the content of the bisphenol A is quick and effective and ensures that the error rate is not more than 3 percent and the detection limit is 0.05mg / kg. The method is used for detecting the content of bisphenol A in rubber, plastic, ink and oil paint products, is reliable and convenient to implement and can meet the requirements on research andproduction.

Description

technical field [0001] The present invention relates to a method for determining the content of bisphenol A, in particular to a method for determining the content of bisphenol A in rubber, plastics, inks and paint products, and more specifically to a method for determining the content of bisphenol A through gas chromatography mass spectrometry. Determination method of bisphenol A content in rubber, plastic, ink and paint products by instrument. Background technique [0002] Bisphenol A, the chemical name is 2,2-bis(4-hydroxyphenyl)propane, and the English name is 2,2-bis(4-hydroxyphenyl)propane; bisphenol A. In the plastics industry, it is used in the manufacture of epoxy resins, polycarbonates, modified phenolic resins, bisphenol A-formaldehyde resins, butoxyphenolic resins and phenoxy resins. The organic industry is used to manufacture brake fluid antioxidants, polyvinyl chloride resins, stabilizers and plasticizers for oxyalcohols and their esters. Used in the rubber in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/88
Inventor 宋薇
Owner PONY TESTING INT GRP SHANGHAI CO LTD
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