Apollaro,C., Marini,L. and De Rosa,R.(2007): Use of reaction path modeling to predict the chemistry of stream water and groundwater: a case study from the Fiume Grande valley (Calabria, Italy). Environ. Geol., 51, 1133-1145.

『反応経路モデリングを用いて河川水と地下水の化学的性質を予想する：フィウメ・グランデ谷（イタリアのカラーブリア州）での例』

『Abstract
　The irreversible water-rock mass exchanges leading to the production of the Fiume Grande valley (Calabria, Italy) stream waters and groundwaters, starting from local rainwaters, were simulated through reaction path modeling in reaction progress (stoichiometric) mode. The simulations assumed bulk dissolution of a phyllitic rock and calcite and precipitation of gibbsite, kaolinite, amorphous silica, illite, a smectite solid mixture, a hydroxide solid mixture, and a trigonal carbonate solid mixture. The analytical contents of major and trace elements in stream waters and groundwaters were satisfactorily reproduced. However, further investigations are necessary to clarify the fate of As in this natural systems.

Keywords: Geochemistry; Groundwater; Stream water; Reaction path modeling』

Introduction
Geological background
Field operation and laboratory analyses
Chemical characteristics of stream waters and spring waters
Reaction path modeling
　The solid reactants
　Infiltrating rainwater
　The T-PCO2-fO2 conditions
　The possible product solid phases
　Results of reaction path modeling: the product solid phases
　Results of reaction path modeling: the dissolved constituents
　　TDIC
　　Calcium
　　Manganese and cobalt
　　Arsenic
Conclusions
Acknowledgments
References

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