Measurement of harmful substance nonyl phenol polyethenoxy ether content in electric and textile
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A nonylphenol polyoxyethylene ether, electronic and electrical technology, applied in the field of determination of nonylphenol polyoxyethylene ether content, can solve the problem of non-measurement of nonylphenol polyoxyethylene ether content, and meet the requirements of research and production Effect
Inactive Publication Date: 2009-06-24
谱尼测试集团深圳有限公司
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Problems solved by technology
At present, although the limits for the use of nonylphenol polyoxyethylene ether in the European Union have been announced, there is no method for determining the content of nonylphenol polyoxyethylene ether in electronic, electrical and textiles by GC-MS.
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Embodiment 1
[0022] Embodiment 1, the mensuration of nonylphenol polyoxyethylene ether in earplug cloth cover:
[0023] Take the sample to be tested and pulverize it, accurately weigh 1.0005g, put it into a Soxhlet extraction device, add 180ml of methanol, and reflux for 6 hours; take it out and cool it to room temperature, use a rotary evaporator to concentrate the extract to nearly dryness at 40°C, and add 5ml of methanol .
[0024] Prepare a glass tube (20mm × 350mm), one end of which is plugged with glass wool washed with a solvent, and a 250ml flat-bottomed ground flask is placed below it for reception; add 1g of anhydrous sodium sulfate, 4g of diatomaceous earth and 1g of anhydrous sodium sulfate, rinse the column with 40ml of methanol, do not collect the rinse. Add the concentrated sample solution, then elute the column with 100ml of methanol and collect all the eluate. Concentrate to 2ml at 40°C with a rotary evaporator, then transfer to a 25ml brown volumetric flask, dilute to t...
Embodiment 2
[0048] Embodiment 2, the mensuration of nonylphenol polyoxyethylene ether in plastic color masterbatch (electronic product raw material):
[0049] Take the sample to be tested and pulverize it, accurately weigh 1.0005g, put it into a Soxhlet extraction device, add 180ml of methanol, and reflux for 6 hours; take it out and cool it to room temperature, use a rotary evaporator to concentrate the extract to nearly dryness at 40°C, and add 5ml of methanol .
[0050] Prepare a glass tube (20mm × 350mm), one end of which is plugged with glass wool washed with a solvent, and a 250ml flat-bottomed ground flask is placed below it for reception; add 1g of anhydrous sodium sulfate, 4g of diatomaceous earth and 1g of anhydrous sodium sulfate, rinse the column with 40ml of methanol, do not collect the rinse. Add the concentrated sample solution, then elute the column with 100ml of methanol and collect all the eluate. Concentrate to 2ml at 40°C with a rotary evaporator, then transfer to a ...
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Abstract
The invention relates to a method for measuring the contents of Polyoxyethylene nonyl phenyl ether that is hazardous substances in electronic and electrical products and textiles through a gas chromatograph-mass spectrometer. Methanol, toluene or methylene dichloride are added in sample to be measured; the mixture is processed through reversed flow for 4 to 16 hours at the temperature ranging from 60 to 120 DEG C, and then Polyoxyethylene nonyl phenyl ether is extracted; then a sample solution is obtained after filtration and purification; proper standard-products of Polyoxyethylene nonyl phenyl ether are weighed accurately and are used as a stock standard solution after being dissolved by methanol and processed through constant volume, and then are further diluted into a working specification curve solution with concentration gradient by using methanol; the sample solution is analyzed by utilizing the gas chromatograph-mass spectrometer; and a sample result that is calculated by a specification solution curve is obtained. The method is adopted to measure the contents of Polyoxyethylene nonyl phenyl ether in the electronic and electrical products and the textiles, the accuracy and the availability are achieved, and both the precision and the accuracy are less than 10 percent. Therefore, the invention provides a reliable and feasible method for the detection on Polyoxyethylene nonyl phenyl ether in the electronic and electrical products and the textiles, and can satisfy the requirements of research and production.
Description
Technical field: [0001] The invention relates to a method for measuring the content of nonylphenol polyoxyethylene ether in electronic appliances and textiles, in particular to a method for measuring the content of nonylphenol polyoxyethylene ether in electronic appliances and textiles by means of a gas spectrometer. Background technique: [0002] Nonylphenol ethoxylates are widely used in various industries and are good emulsifiers and wetting agents, therefore, they are used in cleaning systems in various industries, such as electronic and electrical product manufacturing, textile and leather processing, pulp and paper product manufacturing, metal processing and agriculture. Since nonylphenol ethoxylates are not biodegradable, they cause serious environmental problems when they are released into the environment, and may cause "estrogen effects" and distortions. Due to these environmental problems, the European Community has decided to restrict the use of nonylphenol ethox...
Claims
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