GEOCHEM-EZ: a chemical speciation program with greater power and flexibility
- 550 Downloads
GEOCHEM-EZ is a multi-functional chemical speciation program, designed to replace GEOCHEM-PC, which can only be used on DOS consoles. Chemical speciation programs, such as GEOCHEM and GEOCHEM-PC, have been excellent tools for scientists designing appropriate solutions for their experiments. GEOCHEM-PC is widely used in plant nutrition and soil and environmental chemistry research to perform equilibrium speciation computations, allowing the user to estimate solution ion activities and to consider simple complexes and solid phases. As helpful as GEOCHEM-PC has been to scientists, the consensus was that the program was not very user friendly, was difficult to learn and to troubleshoot, and suffered from several functional weaknesses. To enhance the usability and to address the problems found in GEOCHEM-PC, we upgraded the program with a Java graphical interface, added Help files, and improved its power and function, allowing it to run on any computer that supports Windows XP, Vista or Windows 7.
KeywordsChemical speciation Nutrient solution Computer software Plant nutrition Ion activity
The authors would like to thank Dr. David Parker (University of California, Riverside) for his encouragement to improve the Geochem-PC program and for his helpful discussions. We gratefully acknowledge Dr. Wendell Norvell for providing Geochem and Geochem-PC background materials. Also, we want to sincerely thank Adam Famoso (Cornell University, Department of Plant Breeding) and Michael Rutzke (USDA-ARS, R.W. Holley Center) for all of their work on the ICP-ES analysis of the Yoshida’s rice nutrient solution.
- Parker DR, Zelazny LW, Kinraide TB (1987) Improvements to the program Geochem. Soil Sci Soc Am J 51:488–491Google Scholar
- Parker DR, Norvell WA, Chaney RL (1995a) GEOCHEM-PC: a chemical speciation program for IBM and compatible personal computers. In: Loeppert RH et al (eds) Chemical equilibrium and reaction models. Soil Science Society of America, Special Publication 42, Madison, pp 253–269Google Scholar
- Parker DR, Norvell WA, Chaney RL (1995b) Chemical equilibrium models: applications to plant nutrition research. In: Loeppert RH et al (eds) Chemical equilibrium and reaction models. Soil Science Society of America, Special Publication 42, Madison, pp 163–200Google Scholar
- Shenker M, Hadar Y, Chen Y (1999) Kinetics of iron complexing and metal exchange in solutions by rhizoferrin, a fungal siderophore. Soil Sci Soc Am J 63:1681–1687Google Scholar
- Sposito G, Mattigod SV (1980) Geochem: a computer program for the calculation of chemical equilibria in soil solution and other natural water systems. Kearney Found. Soil Sci, Univ of California, RiversideGoogle Scholar
- Trostle CL, Bloom PR, Allan DL (2001) HEDTA-Nitriloacetic acid chelator-buffered nutrient solution for zinc deficiency evaluation in rice. Soil Sci Soc Am J 65:385–390Google Scholar
- Yoshida S, Forno DA, Cock YH, Gomez KA (1971) Laboratory manual for physiological studies of rice, 2nd edn. International Rice research Institute, Los Baños, pp 53–57Google Scholar