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Method for measuring contents of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper

A technology of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether is applied in the field of physical and chemical inspection of paper materials, which can solve problems such as significant NPnEO content, and achieve short detection time, simple operation and high recovery rate. Effect

Active Publication Date: 2014-10-08
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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  • Abstract
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Problems solved by technology

The optimized extraction method was used to detect nonylphenols in leather samples, and the results showed that there was no NP in the leather samples, but the content of NPnEO was significant

Method used

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  • Method for measuring contents of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper
  • Method for measuring contents of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper
  • Method for measuring contents of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper

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Experimental program
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Embodiment 1

[0027] In this embodiment, the determination method for the content of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper is as follows (the flow chart of the detection method is as follows figure 1 shown)

[0028](1) Preparation of standard solution: Accurately weigh 0.0100 g of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether standard products, dissolve them in a 100 mL volumetric flask with methanol, and prepare a compound with a concentration of 100 mg / L. Mix standard stock solutions. Pipette 0.01mL, 0.05mL, 0.1mL, 0.25mL, 0.50mL, and 1mL of the mixed standard stock solution into a 10mL volumetric flask, dilute to volume with methanol, and prepare octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene The concentrations of the vinyl ether series standard solutions are: 0.10μg / mL, 0.50μg / mL, 1.00μg / mL, 2.50μg / mL, 5.00μg / mL and 10.00μg / mL to obtain a series of standard working solutions, which are stored at 2°C...

Embodiment 2

[0049] In this embodiment, the detection method for the repeatability and standard addition recovery of the method of the present invention is as follows.

[0050] Adopt the sample standard addition recovery rate test, add the standard solution of three different concentrations of low, medium and high respectively in the sample and carry out standard addition rate test, each sample measures 5 times respectively, the condition of chromatographic analysis is the same as embodiment 1, calculates according to analysis result The standard addition recovery of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in the paper of this method and the relative standard deviation of measured value after the standard addition, the results are shown in table 2;

[0051] Table 2 Recovery and repeatability of octylphenol ethoxylates and nonylphenol ethoxylates in paper (n=5)

[0052]

[0053] As can be seen from Table 2, on the three spiked levels, the average recoverie...

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Abstract

The invention relates to a method for measuring the contents of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper. The measuring method comprises the following steps: preparing a sample solution, analyzing a liquid chromatogram and calculating to obtain a measuring result. The optimized detection method has the advantages of short detection time, simplicity and convenience in operation, high sensitivity, high recovery rate, good repeatability and the like. Under chromatographic conditions of the method disclosed by the invention, chromatographic peaks of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether are preferably separated from those of impurities, effective correlation is provided, the detection limits are 0.25 microgram / gram and 0.69 microgram / gram respectively, the average recovery rates are 86.9% and 91.5% respectively, and the average relative standard deviations of sample test results are 3.13% and 2.90% respectively, so that the method has the advantages of high recovery rate and good repeatability.

Description

technical field [0001] The invention relates to a method for measuring the content of octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in paper, and belongs to the technical field of physical and chemical inspection of paper materials. Background technique [0002] Alkylphenol polyoxyethylene ethers (APEOs) are another large class of nonionic surfactants after fatty alcohol polyoxyethylene ethers. Because of their molecular structure containing both hydrophilic groups and hydrophobic groups, they have good Emulsification, wetting, permeability and foaming, washing, decontamination, antistatic and other functions, widely used in textiles, plastics, rubber, daily chemicals, medicine, paper, electronics and other fields. Among APEOs, nonylphenol polyoxyethylene ether (NPEO) is the most, accounting for more than 80%; followed by octylphenol polyoxyethylene ether (OPEO), accounting for more than 15%; dodecylphenol polyoxyethylene ether (DPEO) ) and dinonyl...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 张洪非边照阳杨飞唐纲岭李中皓范子彦刘珊珊王颖张艳革
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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