Method for rapidly determining key parameters of release of volatile organic compounds in wooden furniture

Abstract

The invention relates to a method for rapidly determining key parameters of release of volatile organic compounds in wooden furniture, and belongs to the field of indoor environment examination. The method comprises the following steps: establishing a physical model; placing wooden furniture to be tested in an environment cabin capable of strictly controlling the humiture, for free release; measuring the hourly concentration of target pollutants in the environment cabin multiple times in the release process of the wooden furniture; and calculating the releasable concentration, the diffusion coefficient and other key parameters in the release process of the wooden furniture according to the physical model. The determination method has the advantages of convenience in operation, short test period, high precision, and suitableness for laboratory detection and engineering application.

Description

Technical field [0001] The invention belongs to the field of indoor environment inspection, and particularly relates to a method capable of quickly measuring key parameters of volatile organic compounds released in wooden furniture such as solid wood furniture and panel furniture. Background technique [0002] Statistics show that with social development and economic progress, my country has become the world's largest producer of wood-based panel building materials and furniture. At the same time, analysis shows that the gaseous harmful substances emitted by indoor materials and articles (mainly building materials and furniture) are the main pollutants of indoor air. At present, the world has classified indoor air pollution as one of the five major environmental factors that endanger human health. The main cause of indoor air pollution is volatile organic compounds (VOC) released from wooden furniture, including formaldehyde, benzene series, etc. The existence of VOC will c...

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Problems solved by technology

For the airtight chamber test method (the ventilation rate is zero), due to the need to sample the concentration of the environmental chamber many times, it will cause the loss of the VOC quality in the environmental chamber, resulting in certain errors in the determination of the release key parameters, and sometimes only some Special on-line measurement equipment, such as multi-component gas analyzers, lead to a very limited method versatility

In contrast, the test conditions of the DC cabin (with constant ventilation) are more in line with the actual release of furniture VOCs in the indoor environment, and the experimental sampling and test analysis are also more convenient. However, there is still a lack of key parameters for determining the release of wooden furniture in the DC cabin. related methods of

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