A kind of wooden toy sample pretreatment method and use

Abstract

The invention relates to a pretreatment method for wooden toy samples and a method for determining the content of wood preservatives. The pretreatment method is used to pretreat the toy samples, and then the organic phase is taken into a gas chromatography-mass spectrometer for measurement, and finally the obtained chromatographic The peak area of ​​the peak is plotted on the ordinate, and the corresponding preservative content is plotted on the abscissa to draw a standard working curve. Wood preservatives that can be accurately and effectively detected include 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,4,5-trichlorophenol, 2,3,4,6-tetrachlorophenol, Lindane, pentachlorophenol, permethrin, cyfluthrin, cypermethrin, deltamethrin. The method for the determination of wood preservatives in toys was developed for the first time, which filled the technical gap; the solid-phase extraction method can be used to detect multiple samples in parallel; and the commonly used detection device (gas chromatography-mass spectrometer) is used, and the method is easy to popularize.

Description

technical field [0001] The invention relates to the field of substance detection, in particular to a pretreatment method before determination of wooden toy samples and the detection of wood preservatives on wooden toy samples by using the method. Background technique [0002] Treat wood with chemicals to protect wood from various organisms such as fungi, insects and marine borers, improve the durability of wood, and prolong the service life of wood. Such chemicals are called wood preservatives. The characteristics that wood preservatives should have: [0003] 1. Sufficient toxicity to organisms that endanger or inhabit wood; [0004] 2. Wood preservatives must have persistence and stability; [0005] 3. Good permeability in wood; [0006] 4. No corrosion to metal; [0007] 5. It does not affect the adhesion and paintability of wood, and does not reduce the mechanical properties of wood; [0008] 6. It is safe to use, non-toxic or low-toxic to humans and animals, and has...

AI Technical Summary

Problems solved by technology

[0003] 1. Sufficient toxicity to organisms that endanger or inhabit wood;

[0004] 2. Wood preservatives must have persistence and stability;

Although wood preservatives are non-toxic or low-toxic to humans and animals, for children with weak resistance, long-term exposure to these wood products may still cause toxicity

Therefore, for wooden toys that children often come into contact with, the content of preservatives in them must be strictly controlled to meet strict standards. However, no quick, convenient and effective method has been found to detect the content of wood preservatives in wooden toys.

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