Comparative Evaluation and Analysis of Water Sediment Data

摘要: With respect to sediment pollution responses of ecotoxicological tests may differ from those biochemical test systems and moreover both are indicating effects instead simply measuring chemical concentrations. Because most results investigations commonly given as inhibition values by chemicals is measured their concentrations a comparative evaluation sediments means at the same time has consider different scales. Both data transformations on common scale (standardization) aggregations lead loss information hamper interpretation results. In order avoid merging circumvent often-crucial transformations, partial ordering used for samples German rivers. The aim here compare river sections parameter groups, namely tests, well organic pollutants, heavy metals etc. Fuzzy cluster analysis pre-processing step additionally understand pattern that each result. It shown sections, among other also compared yield quality therefore Hasse diagrams. Sole exception bayou where undisturbed shipping traffic sewage. Moreover, consequence varying during sampling period (over several years), only few it possible derive distinct temporal changes: Except nematode contact test, all parameters significantly correlated, this holds Furthermore, one section could be observed indicate decline contamination, whereas point an increased toxicity. development classification system recommended take care in selection base least two groups.