SINTEF Materials and Chemistry, Postboks 4760 Sluppen, N-7465 Trondheim, Norway.
SINTEF Materials and Chemistry, Postboks 4760 Sluppen, N-7465 Trondheim, Norway.
Mar Pollut Bull. 2014 Jan 15;78(1-2):146-52. doi: 10.1016/j.marpolbul.2013.10.049. Epub 2013 Nov 18.
The interaction of dispersed oil droplets with large diameter suspended particulate materials (SPM) has been little studied. In the current study, particle size, oil characteristics and chemical dispersant significantly influence the adsorption of oil droplets to SPM in seawater. Sediments with a smaller particulate size (clay) approaching that of the oil droplets (2-20 μm) adsorbed more oil per gram than sediments with large particle size (sand). Heavier, more polar oils with a high asphaltene content adsorbed more efficiently to SPM than lighter, less polar oils. A decrease in the smaller, more water soluble oil components in the sediment adsorbed oil was observed for all oil types. Addition of chemical dispersant decreased the adsorption of oil droplets to suspended carbonate sand in an exponential-like manner. No change in the relative distribution of compounds adsorbed to the sediment was observed, indicating dispersants do not alter the dissolution of compounds from oil droplets.
分散油滴与大直径悬浮颗粒物（SPM）的相互作用研究较少。在本研究中，粒径、油特性和化学分散剂显著影响油滴在海水中对 SPM 的吸附。粒径较小的沉积物（粘土）接近油滴（2-20μm），每克沉积物吸附的油比粒径较大的沉积物（砂）多。比重大、极性强、沥青质含量高的油比比重轻、极性弱的油更有效地吸附到 SPM 上。对于所有类型的油，沉积物中较小、水溶性更强的油成分减少，吸附的油也减少。化学分散剂的添加以指数方式降低了悬浮碳酸盐砂对油滴的吸附。吸附到沉积物上的化合物的相对分布没有变化，表明分散剂不会改变油滴中化合物的溶解。
