| Autor: |
Aryal, Rupak Kumar, Trang Thi Thien Duong, Byeong-Kyu Lee, Hossain, Mohammed Abed, Kandel, Dheeraj, Kamruzzaman, Mohammad, Beecham, Simon, Meng Nan Chong |
| Zdroj: |
Sustainable Environment Research; 2014, Vol. 24 Issue 2, p81-91, 11p |
| Abstrakt: |
Organic matter is one of the most important factors in heavy metals mobility in soil and sediment. This study investigated the organic matter composition and metallic elements in the road sediment particles of four sizes < 75 μm, 75 to 180, 180 to 800 μm and 800 to 2000 μm collected from fine land-use types in Ulsan, which is the largest industrial city, in South Korea. The land use types include a national-scale industrial complex, industrial vicinity, a heavy trafficked area, as well as residential and rural areas. Organic matter composition using a fluorescence technique coupled with fluorescence regional integration revealed variation in specific organic matter in road sediment fractions. The concentrations of metals were high in the finer fractions. The relationship between organic matter and heavy metals was investigated by correlating specific organic matter and individual heavy metal species. Among the metals measured, Zn showed positive correlation with aromatic protein type, humic type and microbial by-products and Cd showed negative correlation with fulvic acid. The result showed that the nature of specific organic matter varies with particle sizes and its binding strength may result in accumulation of specific metals. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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