A research method for the migration of wood preservatives in wooden children's products
A technology of wood preservatives and preservatives, applied in the direction of material separation, material analysis, measuring devices, etc., can solve problems that cannot be directly applied, and achieve accurate and reliable research results, obvious effects, and easy operation
Inactive Publication Date: 2016-12-07
CHINESE ACAD OF INSPECTION & QUARANTINE
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Problems solved by technology
Researchers at home and abroad have reported on the migration behavior of plasticizers, bisphenols, aromatic amines, and ultraviolet absorbers in food packaging materials such as plastics. There are research results that cannot be directly applied
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Embodiment 1
[0030] A research method for the migration law of wood preservatives in wooden children's products, which is characterized in that it comprises the following steps:
[0031] 1. Preliminary preparations
[0032] 1. Instruments and reagents
[0033] 7890A gas chromatograph (Agilent, USA); Quattro Micro triple quadrupole mass spectrometer (Waters, USA); Solid phase extraction device (Supelco, USA); NVC-2000 rotary evaporator (Eyela Company, Japan); SM2000 cutting and grinding Instrument (Retsch, Germany); TechCut4 low-speed cutting machine with micro-tooth saw blades (Allied, USA); NTS-4000 constant temperature water bath oscillator (Eyela, Japan); Oasis HLB solid phase extraction column (6mL, 200mg, Waters, USA) ).
[0034] Standard products: 2,4,5-trichlorophenol, 2,4,6-trichlorophenol, 2,3,4 trichlorophenol, 2,3,4,6-tetrachlorophenol, lindane, cypermethrin, cyfluthrin , Deltamethrin were purchased from Accustandard Company, purity ≥98%; Pentachlorophenol and 2,4-dichlorophenol were ...
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The invention discloses a research method of a wood preservative migration rule in a wooden children product. The research method comprises the following steps of (1) smashing a wood sample the surface layer thickness of which is 3mm into 2mm chips through a grinding instrument, and measuring the total content of each preservative in the sample; (2) measuring the migration volume of each preservative in the sample, adding a migration solution in the sample, adding an internal standard operation solution, and measuring by adopting a gas chromatography-tandem mass spectrum detection method; and (3) analyzing the result which is obtained under different experimental simulation conditions based on the measurement of the total content of each preservative and the migration volume to obtain the maximum migration rate and the migration rule of the wood preservative. The research method provided by the invention has the advantages that the research method provides the theoretical foundation for the experimental design of the migration rule of the ten wood preservatives, the manufacture of a positive standard sample is beneficial, and meanwhile, a condition that the research result of the migration rule is exact and reliable is guaranteed.
Description
Technical field [0001] The invention relates to a research method for the migration law of preservatives in wood, in particular to a research method for the migration law of wood preservatives in wooden children's products. Background technique [0002] Common wooden children's products on the market include wooden toys and cribs. Due to reports of toxic incidents of toy coatings, many manufacturers currently claim that their products are "logs" and "non-toxic paints", giving consumers an impression of environmental protection and non-toxicity. However, it is caused by the possible presence of wood preservatives. Hazards are often overlooked. In order to avoid conditions such as cracking and mildew due to dampness, logs and finished products are generally treated with preservatives. Take wooden toys as an example. Infants under 3 years old often bite or lick with their mouths or soak toys in water when they are playing, so that wood preservatives will migrate to the infants wit...
Claims
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IPC IPC(8): G01N30/88G01N30/08
Inventor 吕庆张庆白桦李海玉李丕
Owner CHINESE ACAD OF INSPECTION & QUARANTINE