CONCENTRATION OF 1,2,4 TRIMETHYLBENZENE IN WORKPLACE ENVIRONMENT OF PAINT INDUSTRY
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Abstract
The workers’ exposure of 1,2,4 trimethylbenzene at Mixing - tin and Packaging section of industrial paint was examined. Personal characteristic of subject was collected by questionnaire. 1,2,4 Trimethylbenzene at workplace was collected by coconut charcoal tube and personal sampling pump at a flow rate of 0.01- 0.20 l/min. The air samples were collected from 08.00 to 12.00 a.m. and 01.00 to 05.00 p.m. The air samples were analyzed by gas chromatography - flame ionization detector. The concentrations of 1,2,4 trimethylbenzene at mixing- tin section ranged from 0.001to 2.738 ppm with an average of 1.094 ppm. The concentrations of 1,2,4 trimethylbenzene at packaging section ranged from 0.001 to 5.613 ppm with an average of 1.446 ppm. The exposure concentrations of 1,2,4 trimethylbenzene at mixing- tin section and packaging section were not significantly different (p <0.05).
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References
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