Detection method for real-time continuous monitoring of release of volatile organic compounds in plastic runway and application of detection method

Abstract

The invention belongs to the technical field of environmental monitoring, and discloses a detection method for real-time continuous monitoring of release of volatile organic compounds in a plastic runway and application of the detection method. The method comprises the following steps: (1) putting a sample to be detected into an experimental cabin, and setting temperature and relative humidity of the experimental cabin, air velocity on the surface of the sample and an air replacement rate; (2) after putting the sample, collecting air in the cabin by a constant current sampler, and enabling the extracted air to pass through a Tenax TA adsorption tube; (3) gas chromatography-mass spectrometry detection: fixing the Tenax TA adsorption tube to a two-stage thermal desorption instrument, after thermal desorption, enabling the volatile organic compounds to enter gas chromatography-mass spectrometry for detection, and performing qualitative and semi-quantitative analysis according to an area normalization method. The detection method can be used for simultaneously performing qualitative and semi-quantitative determination on multiple volatile organic compounds, and can be applied to detection of the volatile organic compounds in fields such as plastic runway, automobile seats and furniture.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, in particular to a detection method for real-time and continuous monitoring of the release of volatile organic compounds in a plastic runway and an application thereof. Background technique [0002] The plastic track is also called the all-weather track and field track. It is composed of polyurethane prepolymer, mixed polyether, waste tire rubber, EPDM rubber particles or PU particles, pigments, additives, and fillers. The plastic runway has good elasticity, high strength, wear resistance and non-slip, is not affected by weather and temperature, and has good track and field performance characteristics, so it is more and more used in various schools and sports fields at all levels. However, in recent years, there have been more than 10 "drug-related" incidents on plastic runways in Nanjing, Jiangsu, Songjiang, Shanghai, Hangzhou, Zhejiang, Nanchang, Jiangxi, Guangzhou, Shenzhen, a...

AI Technical Summary

Problems solved by technology

Poor quality rubber particles not only smell bad, but also may cause heavy metal content such as lead and cadmium to exceed the standard on the plastic runway

In particular, some unscrupulous manufacturers even use recycled rubber particles for paving in order to reduce costs. Recycled rubber particles often need to be dissolved and processed with ammonia water, and the residual ammonia may also cause corrosion and suffocation to the human body.

Paving is an important part of the production of plastic track products. Some companies simplify the process and construction time in order to meet the deadline or reduce costs. They often add organic solvents to facilitate construction. Toluene and xylene contained in organic solvents can also cause harm to the human body. At the same time, the simplified process will also lead to insufficient polymerization reaction and increase the release of volatile organic compounds, thus causing harm to human body and environment

[0004] At present, the detection of volatile organic compounds in plastic track mainly uses the method of solid-phase microextraction (SPME), but the method of solid-phase microextraction needs to destroy the sample for detection, and the amount of sample to be detected is limited, and it is difficult to control the temperature and humidity, so it cannot be simulated. Real plastic runway use environment, thus failing to achieve the purpose of monitoring

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