Study on optimization method of sampling frequency by analysis of variance for water quality surveillans

Abstract

This study was aimed to present the procedure to obtain the optimized intervals of the seasonal and diurnal sampling in “Measurement Program” that the Governmental and prefectural agencies have been performing for more than ten years. In order to obtain the optimum sampling frequencies, the equation for maximizing the amount of information on the seasonal and diurnal variation was derived from an analysis of variance.
This method was successfully applied to the analysis of the rivers in the Kanagawa prefecture and the results showed that the attentions to the areal characteristics should be paid to intend the reasonable sampling strategies.