Temporal variations of aluminium fractions in Streams in the delsbo area, central Sweden

摘要

Stream waters were sampled weekly during spring and monthly during summer and autumn in 1998. The streams are more or less acidified, and some have been treated with lime. The aluminium fractions (total monomeric Al, organic monomeric Al, inorganic monomeric Al) Were determined colourimetrically with pyrocatechol violet combined with cation exchanges using Continuous Flow Analysis (Autoanalyzer I). The levels of inorganic monomeric aluminium Varied substantially, between ＜3 to 271 μg/l.