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Method for determining carbonyl compounds in water-based adhesive through direct derivation and high performance liquid chromatography

A technology of high performance liquid chromatography and carbonyl compounds, applied in the field of detection of harmful components in water-based adhesives, to achieve the effect of improving precision, simple operation steps, and reducing average deviation

Active Publication Date: 2012-04-11
CHINA TOBACCO HUNAN INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no direct derivatization HPLC method has been reported to simultaneously determine the eight volatile carbonyl compounds of formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, crotonaldehyde, 2-butanone, and butyraldehyde in water-based adhesive samples. Research

Method used

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  • Method for determining carbonyl compounds in water-based adhesive through direct derivation and high performance liquid chromatography
  • Method for determining carbonyl compounds in water-based adhesive through direct derivation and high performance liquid chromatography
  • Method for determining carbonyl compounds in water-based adhesive through direct derivation and high performance liquid chromatography

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Embodiment 1

[0019] 1. Configuration of derivatization reagent: Weigh 0.0800g (accurate to 0.0001g) of analytically pure 2,4-dinitrophenylhydrazine solid in a 1000mL volumetric flask, dissolve with acetonitrile, add 3mL of phosphoric acid, and dilute to volume with acetonitrile. The final concentration is 80μg / mL, stored at around 10°C, and the validity period is three months.

[0020] 2. Preparation of sample solution: Weigh 0.5g (accurate to 0.0001g) of water-based glue sample into a 50mL volumetric flask, add 20mL of prepared 2,4-dinitrophenylhydrazine acidic solution, then add 5.0mL of acetonitrile, Shake at a medium speed (500-1500r / min) for 20 minutes at room temperature. Take 10 mL of the shaken emulsion in a centrifuge tube, centrifuge at a speed of 12000 r / min for 20 min, then take 1 mL of the supernatant to pass through a 0.45 μm organic filter membrane, and analyze by high performance liquid chromatography.

[0021] 3. Determination of samples: analyzed by high performance liqu...

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Abstract

The invention discloses a method for analyzing volatile carbonyl compounds in water-based adhesive through direct deviation-high performance liquid chromatography. A water-based adhesive sample and a 2,4-dinitrophenylhydrazine acid solution are directly subjected to the derivatization reaction, and the content of the carbonyl compounds in the water-based adhesive is analyzed through the high performance liquid chromatography. A DIONEX Acclaim Explosives E2 column is adopted, water and acetonitrile are taken as a mobile phase for performing binary gradient elution, the flow rate is 1.2mL / min, the sample injection volume is 10 mu L, the detection wavelength is 365nm and the temperature of a chromatographic column is 35 DEG C. By adopting the method, the volatile carbonyl compounds in the water-based adhesive can be effectively analyzed, the method is fast, reliable, simple and practicable, the enrichment process of the volatile carbonyl compounds in the sample is achieved, the loss of detected substances during the pre-treatment process of the sample can be reduced, the detection limit is low and the accuracy is high.

Description

technical field [0001] The invention relates to the detection of harmful components in water-based glue, in particular to a method for analyzing carbonyl compounds in water-based glue by direct derivation high-performance liquid chromatography. Background technique [0002] The application of water-based adhesives has been developed into various fields of people's production and life, but the harmful volatile carbonyl compounds in water-based adhesives have a great impact on human health. At present, the detection of harmful substances in water-based adhesives mainly focuses on benzene and benzene series, phthalates and aldehydes. There are high performance liquid chromatography, gas chromatography and solvent extraction methods for the detection of volatile carbonyl compounds in water-based adhesives, and these three methods are mainly aimed at two carbonyl compounds, formaldehyde and acetaldehyde, in cigarette water-based adhesives. So far, no direct derivatization HPLC m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 吴名剑万小红刘丹戴云辉李绍晔李伟
Owner CHINA TOBACCO HUNAN INDAL CORP
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