抄録
Alkylbenzene sulfonate (ABS) concentration in the water of the Tama River (Tokyo Metropolis) was measured at 7 points along the river, and 5 times during 1962-63, using Jones, L-M, and Abbott methods.
These data showed the highest value in August, probably because of the drainage of household washing.
At the same time, it was supposed that there existed unknown methylene-blue substances (MBAS) other than ABS, especially in the lower stream of the river.
