Sanitary-chemical characteristics of composite wood-based materials and synthetic resins according to gas chromatography

Abstract

The article presents the sanitary-chemical characteristics of plywood, wood-shaving plate,
wood-fiber plate and synthetic resins. The purpose of the review − definition of sanitary-chemical
characteristics of composite wood materials and synthetic resins by gas chromatography.
Determination of sanitary-chemical characteristics of synthetic resins and composite wood
materials was studied under simulated operating conditions of the heating chamber by means of gas
chromatography. Concentrated volatile organic compounds in the thermostable polymer sorbents −
polychrome-3, tseziysorbe and polyphenylchinoxaline. Was used for sample introduction device
Хабаров В.Б. / Сорбционные и хроматографические процессы. 2015. Т. 15. Вып. 2
197
organics concentrated on sorbents, the analytical capillary column packed and the method of
thermal desorption.
After 6 months of conditioning of samples of solid pine wood with saturation 2.2 m2
/m3
, a
temperature of 20, 40 ºC, the gas exchange volume 1/h is allocated formaldehyde at a concentration
of 0.15 mg/m3
and 0.165 mg/m3
and exceeds the maximum permissible concentration in air of
residential areas in 15-17 times. Plywood veneer pine based on phenol-formaldehyde resin
thickness of 10 mm at saturation 2.2 m2
/m3
, gas exchange 1 volume/h, temperature 20 and 40 °C
highlights above the maximum permissible concentration to formaldehyde is 46 times, methanol −
1.8 times and phenol − 5.7 times .In urea-formaldehyde resin contains more methanol 1.9-2.9 times
and matilla 1.4 -3.6 times in comparison with formaldehyde. Given the prediction of excretion of
formaldehyde and methanol from the particle Board on the basis of urea-formaldehyde resin, with a
thickness of 16 mm, in the chamber of the glass at saturation 0.4-2.2 m2
/m3
, a temperature of 20
°C, the gas exchange volume 1/h and it is shown that the achieved selection to concentrations of
formaldehyde through 23.4-30.0 months and methanol − 5.2-8.0 months. Prognostication
formaldehyde emission and methanol from wood-shaving plate based on urea-formaldehyde resin,
16 mm thick, in the chamber of the glass at saturation 0.4-2.2 m2
/m3
, a temperature of 20 °C, gas
exchange 1 volume/h and it is shown that the selection is achieved to the maximum allowable
concentration for formaldehyde by 23.4-30.0 months and methanol − 5.2-8.0 months. Sanitary and
epidemiological supervision and development of technologies for production of wood composite
materials. To determine the sanitary-chemical characteristics of composite wood materials and
synthetic resins, it is advisable to use a gas chromatography method, and the dynamic headspace
analysis thermostable polymeric sorbents for concentrating − polychrom-3, tseziysorb and
polyphenylchinoxalin