文章基本信息

标题：Estimation of i-Urobilin Movement in an Aquatic Environment
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作者：YUICHI MIYABARA ; JUNZO SUZUKI ; SHIZUO SUZUKI 等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1994
卷号：40
期号：1
页码：13-19
DOI：10.1248/jhs1956.40.13
出版社：The Pharmaceutical Society of Japan
摘要：A large amount of i-urobilin is present in the bottom sediment of urban rivers, and the value of distribution ratio (sediment/water) increase along the river, being higher at the river mouth. The adsorption equilibrium of i-urobilin is important to estimate the movement of i-urobilin as a fecal pollution indicator in the aquatic environment. A model adsorption experiment was carried out to determine the factors affecting the uptake of i-urobilin by the bottom sediment. The particle size of sediment affected the adsorption of i-urobilin. Furthermore, the content of i-urobilin in sediment agreed with the model adsorption experiment. It was reported previously that the content of i-urobilin and suspended solids in river water increased after rainfall. These indicated that i-urobilin moved with suspended solids, which would precipitate at the river mouth. These results suggested that sediment samples should be collected at the mouth of the river, where i-urobilin was concentrated.
关键词：i-urobilin;movement;adsorption;particle size;suspended solid