Lin Chitsan, Lee Cheng-Jin, Mao Wen-Ming, Nadim Farhad
National Kaohsiung Marine University, Department of Marine Environmental Engineering, 142, Haijhuan Road, Nanzih District, Kaohsiung 81157, Taiwan.
J Hazard Mater. 2009 Jan 15;161(1):270-5. doi: 10.1016/j.jhazmat.2008.03.082. Epub 2008 Mar 22.
Sediment samples were analyzed for di-(2-ethylhexyl) phthalate (DEHP), an organic endocrine disruptor, in Houjing River in southern Taiwan. The average DEHP concentration at 10 sampling locations, spanning from upper, middle, and lower segments of the stream, was calculated at 3.81+/-6.36mgkg(-1)drywt. Highest concentration was recorded at the Jhongsing Bridge (20.22mgkg(-1)drywt.) near the Dashe Industrial Park, followed by the Renwu Bridge (8.93mgkg(-1)drywt.) near the Renwu Industrial Park. The surface sediment concentration of DEHP was found to be higher in the dry season (October and December), and lower in the wet (flood) season (August), indicating that sources of DEHP remained active and continued to recharge the Houjing River. Vertical sediment core analysis revealed that highest concentration occurred at the depth of 40-60cm, indicating that historical discharges of DEPH may have been higher than recent years. Domestic comparison of DEHP concentrations in sediment from highest to lowest could be categorized as northern, southern, central, and eastern Taiwan, respectively, and seemed to be positively correlated with population density and/or industrial activity. Compared to other countries, DEHP concentration of the Houjing River was relatively higher than rivers studied in Japan, Germany, Italy, and Malaysia, and was relatively lower than the Aire and Trent Rivers in the United Kingdom.
对台湾南部后劲溪的沉积物样本进行了分析，以检测有机内分泌干扰物邻苯二甲酸二（2-乙基己基）酯（DEHP）。在该溪流上游、中游和下游的10个采样点计算得出的DEHP平均浓度为3.81±6.36mg/kg（干重）。最高浓度出现在大社工业园区附近的中兴桥（20.22mg/kg干重），其次是仁武工业园区附近的仁武桥（8.93mg/kg干重）。研究发现，DEHP的表层沉积物浓度在旱季（10月和12月）较高，在雨季（8月）较低，这表明DEHP的来源仍然活跃，并持续向后劲溪补给。沉积物柱状样分析显示，最高浓度出现在40-60厘米深度处，这表明DEHP过去的排放量可能高于近年来。台湾沉积物中DEHP浓度从高到低的国内比较可分别归类为台湾北部、南部、中部和东部，并且似乎与人口密度和/或工业活动呈正相关。与其他国家相比，后劲溪的DEHP浓度相对高于日本、德国、意大利和马来西亚研究的河流，相对低于英国的艾尔河和特伦特河。
