In the present study we try to use factor analysis in the characterisation of river water chemistry between the municipalities of Cheia and Muncel along a 54-km stretch of the Aries River (NW Romania). The results show that 4 factors can explain 88% of the water chemistry. The first factor explains 39% of the total data variance, and represents the water-rock interactions. This high percent indicates the importance of water rock interactions in defining the chemistry of surface waters. The second factor explains 23% of the data variation and represents the influence of mining effluents. The influence of the mine tailings on water chemistry is represented by the third factor. The sum of the second and the third factor can explain 40% of the total data variance, which confirms that the Arieş River is highly polluted by the mining industry. The last factor, which explains 8% of data variation represents the influence of the agricultural and domestic effluents.
Lázár, Forray Ferenc
Studies on Aries River (Apuseni Mountains) pollution using factorial analyses (in Romanian),
Studia UBB Geologia
Available at: http://scholarcommons.usf.edu/geologia/vol46/iss1/art6