GEOCHEM-EZ: a chemical speciation program with greater power and flexibility
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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.
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