Presence of Volatile Organic Compounds in Fine Coat Paint Used in House Decoration in Benue State Nigeria.
Abstract
Chemical assessment of liquid state green colored samples of Emulsion Fine-Coat paint ,Texture fine-coat Paint and Oil-fine coat paint collectively referred to as fine-coat Paint normally produced and used in Nigeria for house painting was carried out by first detecting alcohols . To 2cm3 of the paint sample in a test tube was added 2cm3 of ethanoic acid, and a few drops of conc. H2S04. This was boiled with care for 2 minutes , an ester was formed with a characteristic pleasant fruity smell. This indicated the presence of an alcohol. To a further 2cm3 of sample in a test tube was added a small amount of sodium metal (with care). There was a vigorous effervescence with the evolution of an odourless colourless gas with no effect on litmus paper. This confirmed the presence of an alcohol . 2 drops of sample was added to 2ml of 95% ethanol and 3ml of 2,4-dinitrophenylhydrazine reagent. It was shaken vigorously, and allowed to stand for 15 minutes. Formation of a precipitate was a positive test for ketones . To 2cm3 of AgNo3 solution, was added 1 drop of dilute NaoH, and 1 cm3 of a little amount of paint sample and warmed on a water bath. Silver mirror was formed on the wall of the test tube confirming the presence of an aldelyde The quantity of these compounds was assessed by the use of a small hand held monitor the RI VOC Meter extremely sensitive and capable of detecting contamination at 0.1ppm levels . The maximum values of 0,65ppm Formaldehyde 0.60ppm Acetone and 0.75ppm alcohol were obtained . VOCs are dangerous to human health and can cause harm to the environment especially indoors . Considering the results obtained above and viewed against international standards they are not acutely toxic, but instead have compounding long-term health effects, because the concentrations are usually low and the symptoms slow to develop .
Keywords: Dangerous Paints Hazards Contaminants and Ventilation
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