Adsorption of Amino Acids, Peptides, and a Monosaccharide byMarine Sediments: Importance in Organic Matter Decomposition Processes

许多有机化合物，包括极性和非极性 物质，被海洋沉积物吸附。 吸附有机 物质决定物理化学性质 在自然沃茨中的大多数颗粒表面。 此外，吸附影响有机物的分解速率， 细菌的物质拟议的研究将调查 氨基酸丙氨酸，谷氨酸，赖氨酸， 和亮氨酸：几种丙氨酸肽，和单糖 葡萄糖目标是确定哪些有机成分 沉积物对氨基酸的吸附， 分解速率和吸附机理。 该方法将涉及对新鲜， 完整的沉积物和实验室实验与提取 这些研究的结果将有助于 回答这个问题：吸附是否部分地 不同有机物分解率的差异？ 吸附作用是否会导致 在不同成分的沉积物中有相同的有机化合物？

Many organic compounds, including both polar and nonpolar substances, are adsorbed by marine sediments. Adsorbed organic substances determine the physicochemical properties ofmostparticle surfaces in natural waters. Further,adsorptionaffects thr rate of decomposition of organic substancesbybacteria. The proposed research will investigate theadsorptionof the amino acids alanine, glutamic acid, lysine, andleucine:several alanine peptides, and the monosaccharide glucose. Thegoals are to determine which organic constituents ofsedimentsadsorb amino acids, the effects of adsorption ondecompositionrates, and the mechanisms of adsorption. THeapproach willinvolve both field studies on fresh, intactsediments andlaboratory experiments with extracted sedimentorganic matter.The results of these studies will help answer thequestion: Isadsorption responsible, in part, for variation indecompositionrates of different organic substances? Doesadsorptioncontribute to differences in decomposition rates of thesameorganic compound in sediments of differing composition?