Alkylbenzenesulfonate (ABS) in the Bottom Muds of the Inner Part of Tokyo Bay

概要

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The contents of alkylbenzenesulfonate (ABS) in the bottom sediments were analyzed for the inner part of Tokyo Bay and five inflowing rivers. Methylene blue active substances (MBAS) was extracted from the dired sample with methanol-benzene mixture.<BR>After the concentration of MBAS was determined by colorimetry, the ratio ABS/MBAS was estimated by an infrared spectrum of MBAS-MB complex. The net content of ABS was calculated from these two values.<BR>The ABS contents in the surface of the bottom sediments of the rivers and sea ranged 1.9-59μg/g and 0-14.1μg/g dry weight, respectively. The contents of ABS in the river sediments reflected the degree of pollution of each river by urban waste waters. From the results of the analysis of the core samples of sea sediment at two points containing ABS only in the upper layer, the average rate of sedimentation of the bottom muds in the inner part of Tokyo Bay since the usage of ABS began was estimated as 3cm/year and 7cm/year respectively.
日本海洋学会の論文