Som van Adsorbeerbare Organische Halogeenverbindingen (AOX) in het Nederlandse Drinkwater (Sum of Adsorbable Organic Halogen Compounds (AOX) in the Dutch Drinking Water)

摘要

In 1987 samples of drinking-water from all Dutch water works have been analyzed for the sum of adsorbable organic halogen compounds (AOX). The results (expressed in mg/l Cl) are given and discussed. Most of the relatively high results (> 10 mg/l Cl) can be attributed to the use of polluted surface water as raw water (either directly or via infiltration) and the application of chlorination. In view of the tendency of decreasing the use of chlorine or stop the practice of chlorination altogether and also in view of the increasing use of active carbon filtration, it seems worthwhile to check this by periodical AOX-determinations. Some 33 pumping stations, using unsuspected groundwater, showed also moderately high AOX (> 7.5 mg/l Cl) or even higher. Repetition of the measurements in 1989 gave about the same results in 20 of them. Whether these AOX-results can be attributed to natural substances can only be determined by identification of the individual compounds.