Sediment Pollution Investigation of an Urban River

• Main Authors: Jen-ho Chu, 朱衽禾
• Other Authors: Chin-Ming Kao
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/26172867181182291996

碩士 === 國立中山大學 === 環境工程研究所 === 104 === Abstract The objective of this study was to evaluate the pollutants polycyclic aromatic hydrocarbons (PAHs) and phthalate esters (PAEs) distribution in the river sediments in Kaohsiung City. The characteristics of sediments were also analyzed. Three major rivers (Lover River, Hou-Jing River, and Fon-Shan River) in Kaohsiung City were studied. Results from the sediments analyses show that the total PAHs concentrations in sediments ranged from 42.8-2,158 ng/g and mainly located in the downstream sections. Based on the NOAA guidelines, the fluorene (FL) concentrations in sediments collected from the Chi-Shen Bridge location was higher than the effects range-low (ERL) level. The PAHs concentrations in sediments collected from other locations were lower than the ERL levels. This indicates that the PAHs had no significant impact on the ecosystem. The major sources of PAHs were due to the ignition of fuel oils and the PAEs in the sediments of three rivers contained di-isodecyl phthalate (DiDP), di-(2-ethyl hexyl) phthalate (DEHP), di-isononyl phthalate (DiNP), and di-n-octyl phthalate (DnOP). Among them, DEHP and DiNP had relatively higher portions. The sediment collected from the highest Long-Shin Bridge location of Lover River had the highest DHEP concentration (21,243 ng/g) followed by the concentration (21,519 ng/g) detected at the Tzi-Hen Bridge of Fon-Shan River. The DHEP concentrations detected at these locations were higher than the ERL levels indicating that the sediments might result in adverse impact on the ecosystem. Results also indicate that the PAHs concentrations had high correlation with the organic contents in sediments. Results from this study would be helpful in designing river management and pollution control strategies for the urban rivers.