Interaction of Pb2+ and Zn2+ salts with clay minerals**
1
Institute of Aquatic and Ecological Problems, Far East Division, Russian Academy of Sciences, 65 Kim-Yu-Chen Str., Khabarovsk, 680000 Russia
2
Faculty of Soil Science, Moscow State University, Vorobevy gory, Moscow, 119899 Russia
3
Dokuchaev Soil Science Institute, 7 Pyzhevsky per., Moscow, 119899 Russia
4
4Institute of Tectonics and Geophysics, Far East Division, Russian Academy of Sciences, 65 Kim-Yu-Chen Str., Khabarovsk, 680000 Russia
Int. Agrophys. 2004, 18(3): 231-238
KEYWORDS
ABSTRACT
Multiple mica-like monocrystals, 3 mm in size, are formed when smectite is saturated with 1N Pb(CH3COO)2 solution. The appearance of neoformations meta-stable to water may be attributed to inner-sphere complex of Pb2+ cations and smectite macroanion with its charge being centered in the tetrahedral layer of beidellite structure. Textured aggregates and few neo-formation monocrystals are found in Pb(CH3COO)2-saturated kaolinite specimens. No changes of particle organization in clay minerals saturated with 1N ZnCl2 solution are registered.
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| eISSN: | 2300-8725 |
| ISSN: | 0236-8722 |
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