Xu Xiang-Rong, Li Xiao-Yan
Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
Mar Pollut Bull. 2008;57(6-12):403-8. doi: 10.1016/j.marpolbul.2008.01.023. Epub 2008 Mar 4.
Laboratory experiments were carried out to investigate the adsorption behaviour of dibutyl phthalate (DBP) on marine sediments collected from five different sites in Victoria Harbour, Hong Kong. DBP adsorption can be well described by the Langmuir isotherm. The maximum DBP adsorption capacity (Q(max)) of the marine sediments ranges from 53 to 79 mg g(-1), which has a positive correlation with their organic content. Around 90% of the organic can be removed from the sediments with treatment by H(2)O(2) oxidation, and the Q(max) then decreases to a range between 13 and 22 mg g(-1). The black carbon content of the sediments has a much greater DBP adsorption capacity than does the natural organic matter of the sediments. The amount of DBP adsorbed on the sediments increases as the salinity of the marine water increases.
开展了实验室实验，以研究邻苯二甲酸二丁酯（DBP）在从香港维多利亚港五个不同地点采集的海洋沉积物上的吸附行为。DBP吸附可用朗缪尔等温线很好地描述。海洋沉积物对DBP的最大吸附容量（Q(max)）在53至79毫克/克（-1）之间，这与它们的有机含量呈正相关。通过H(2)O(2)氧化处理，沉积物中约90%的有机物可被去除，然后Q(max)降至13至22毫克/克（-1）之间。沉积物的黑碳含量比沉积物的天然有机物具有更大的DBP吸附容量。随着海水盐度的增加，沉积物上吸附的DBP量增加。
