Abstract
The distribution of MBAS in a small and shallow pond was investigated.
The conclusions are summarized as follows.
1) The ratio of DOC to POC is 5.5 to 1. 3, which is affected strongly by the amount of algae in water.
2) There is no MBAS in suspended solid and it is speculated that the accumulation of MBAS in the bottom muds is caused by the adsorption of MBAS on the bottom muds from water.
3) The rate of decomposition of MBAS not in the bottom muds but in water is strongly affected by the season.
4) The ratio of MBAS to organic matters in water and in the bottom muds is 3.9% and 0, 29% respectively.
5) The rate of decomposition of MBAS in the bottom muds is faster than that of T-P, T-N and organic matters.
