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Chemical risk assessment method for wood preservative in wooden toy

A technology for wood preservatives and risk assessment, which is applied in the field of chemical risk assessment of wood preservatives in wooden toys, can solve the problems of chemical risk assessment research methods without wood preservatives, etc., and achieves strong operability, high accuracy and effectiveness. strong effect

Pending Publication Date: 2021-01-29
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no research method for chemical risk assessment of exposure to wood preservatives in wooden toys at home and abroad.

Method used

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  • Chemical risk assessment method for wood preservative in wooden toy
  • Chemical risk assessment method for wood preservative in wooden toy
  • Chemical risk assessment method for wood preservative in wooden toy

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0042] A chemical risk assessment method for wood preservatives in wooden toys, comprising the steps of:

[0043] 1. Collect a large number of wooden toy samples, test and screen the level of wood preservatives in the samples, and compare and analyze the content of wood preservatives according to different sample types;

[0044] Reagents and materials:

[0045] Standard products: 2,4 dichlorophenol, 2,4,5-trichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, lindane, 2,3,4 trichlorophenol Chlorophenol (internal standard) was purchased from Acstandard Company of the United States with a purity of ≥98%; pentachlorophenol was purchased from Supelco Company of the United States with a purity of ≥99%.

[0046] Standard substance stock solution: Accurately weigh 100mg of each preservative standard substance into a 100mL brown volumetric flask, dilute to volume with 9:1 (v / v) ethanol / glacial acetic acid solution, and prepare a single standard stock solution with a conce...

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Abstract

A chemical risk assessment method for a wood preservative in a wooden toy comprises the following steps of (1) collecting a large number of wooden toy samples, detecting and screening the existence level of the wood preservative in the samples, and comparing and analyzing the content of the wood preservative in the samples according to different sample categories; (2) selecting a sample with relatively high wood preservative content for migration quantity determination; (3) determining an oral contact exposure mode of chemical substances according to the use characteristics of the wooden toy sample, and calculating the exposure amount by applying an exposure model; and (4) evaluating carcinogenic risks and non-carcinogenic risks according to the chemical harmfulness of the substances.

Description

technical field [0001] The invention relates to the field of consumer product safety, in particular to a chemical risk assessment method for wood preservatives in wooden toys. Background technique [0002] The urge to chew, lick, and swallow objects is a natural developmental stage for infants and toddlers at the natural developmental stage from 3 months to 3 years of age, and gradually diminishes after 3 years of age. This oral behavior can lead to ingestion of chemicals left in toys by children. Wood preservatives, such as polychlorinated phenols and lindane, are used to repel insects and fungi to increase the life of wooden toys. The process of adding preservatives generally adopts physical treatment methods to infiltrate the compound into wooden toys through pressure, and due to the porous nature of wood itself, it has good permeability, these characteristics make the chemical substances in this material easy to produce migrate. Polychlorinated phenol and lindane are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/88
CPCG01N30/06G01N30/88
Inventor 王志娟吕庆刘雅慧王婉张庆
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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