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Chemistry for Sustainable Development

2005 year, number 1

Photochemical Activity of Aqueous Solutions of Humic Acids Extracted from Soil within Horizon A, Studied by Means of Luminescence

1Institute of Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences,
Ul. Institutskaya 3, Novosibirsk 630090 (Russia), E-mail:
2Institute of Soil and Agrochemistry, Siberian Branch of the Russian Academy of Sciences,
Ul. Sovetskaya 18, Novosibirsk 630099 (Russia)
Pages: 79-83


The photochemical stability of aqueous solutions of humic acids (HA) extracted from black soil and from solonetz soil from different depth R is studied by means of luminescence for the first time. It is shown that the photochemical activity of both HA samples extracted from the sub-surface soil layers is higher. The method of photochemical probing is concluded to have advantages over other methods for discrimination of the sorts of HA molecules.