Abstract

Taguchi's method appears to be an ideal statistical tool for the post-analysis correct determination of chemical composition in marine sediment samples. Using Taguchi's method in the chemistry laboratory, controllable factors such as mass per volume ratio, digestion temperature, digestion time and acids can be isolated to provide centring and variance control in Cu and Pb measurements or a “correct determination of Cu and Pb concentrations” minimizing the effect of noise factors. Statistical analysis is performed to identify the effect of parameters and their interactions. Also the expected cost savings under optimum condition is calculated. The results are confirmed by further measurements.

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