• 보존과학연구
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• s.35
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• pp.25-44
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• 2014

In this study, measured annual year and seasonal concentrations of VOCs by Active type and Passive type using the measurement and analysis method in the exhibition hall and outdoor. It was compared with the correlation between the methods according the comparison of methods to measured concentrations. As a results, the annual average concentrations of TVOC in exhibition room($906.5{\mu}g/m^3$) was greater than for most of the study period, more than 1.8 times the standard in the Ministry of Environment. ${\Sigma}VOCs$ concentration of exhibition room by Active type was higher than Passive type. Some VOCs was decreased with the lapse of time a temporary increase tendencies was. The annual average I/O ratio of TVOC was 9.0, ${\Sigma}VOCs$ was confirmed to occur in a large amount inside the exhibition hall ${\Sigma}VOCs$ was studied to 34.0. Correlation coefficient of ${\Sigma}VOCs$ was 0.367. Toluene was 0.567 that the survey was the largest analysis to the relationship between the two methods.

• Journal of the Korea Organic Resources Recycling Association
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• v.30 no.4
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• pp.41-50
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• 2022

Recently, research on carbon adsorbents has been active as an interest in improving the environment such as indoor and outdoor air quality. Considering that causative substances deteriorate the air quality are basically volatile organic compounds, it is important to improve the hydrophobicity of the carbon materials for better removal efficiency. This study presents a method for improving hydrophobicity of carbon and a measurement of the hydrophobicity. Generally, methods of improving the hydrophobicity of carbon materials are heat treatment, acid/alkali treatment, coating and immersion with hydrophobic materials. However, it collapses the pore structure and reduces the adsorption capacity. Therefore, this study briefly introduce not only the general method for improving carbon materials' hydrophobicity but also the method for converting the precursor of the material is briefly introduced. Futhermore, this study introduces a analytical technique used to determine hydrophobic modification or not, and aims to enhance the understanding of carbon materials.