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ȯ°æºÐ¼®ÇÐȸÁö 'ȯ°æºÐ¼®°ú µ¶¼ºº¸°Ç(ISSN 2672-0175, eISSN 2672-1139)'Àº ȯ°æµ¶¼ºº¸°ÇÇÐȸ¿Í °øµ¿À¸·Î ¹ß°£Çϸç,
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Study on the Contamination Characteristics of Polycyclic Aromatic Hydrocarbons (PAHs) in Soils
Sang-Jo Kim, Sung-Tae Kim*, Sung-Yong Kim, Ji-Hyun Park and Gon Ok
Faculty of Earth Environmental Sciences, Pukyong National University, Nam-gu Daeyeon3-dong 599-1, Busan 608-737, Korea
*Busan School for the Blind, Dongrae-gu Myungjang-2dong 85-1, Busan 607-112, Korea
Abstract
The concentration levels and distribution characteristics of Polycyclic Aromatic Hydrocarbons (PAHs) in soil of Korea were measured to quantify the relationship of PAHs concentration with the particle size distribution and the organic matter of soil. Soil samples (30¡¿30¡¿5cm in volume) were gathered from the soil surface in 6 sites and concentrations of total 16 kinds of PAHs including 6 classes (IARC probable and possible human carcinogens) were analyzed. The concentrations of total PAHs were in the range of 50.8 to 1942.53 ng/g dry weight and the concentrations of 6 classes of PAHs ranged between 5.91 and 694.15 ng/g dry weight respectively. The content of 6 classes was about 24.6% of total PAHs and increased with increase of total PAHs content. Statistical cluster analysis was performed to understand the distribution characteristics of PAHs in soils. The concentration of two or three ring PAHs with lower molecule weight was lower than those of four or more ring PAHs in all sites. The highest content of PAHs was found at the site located near heavy traffic roads and the automobile combustion was considered as the main source of PAHs contamination. The content of PAHs in soil increased with decrease of particle size and increase of organic matter, suggesting PAHs have high adsorption characteristic for fine particles and high organic matter content.
Key word : PAHs, soil contamination, particle size, adsorption, organic matter
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