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A Computer Program Relating Solute Potential to Solution Composition for Five Solutes
Author(s) -
Michel Burlyn E.,
Radcliffe David
Publication year - 1995
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1995.00021962008700010022x
Subject(s) - molality , chemistry , mannitol , thermodynamics , volume (thermodynamics) , analytical chemistry (journal) , mathematics , chromatography , aqueous solution , physics , organic chemistry
Data required to prepare solutions with desired solute potentials at any temperature from 0 to 40°C are scattered, often have inappropriate units, and usually require involved calculation or are not available. We wished to prepare a program so that anyone could obtain pertinent information simply. Adequate published data could be found only for mannitol, PEG 8000, NaCl, KCl, and sucrose, with water displacement by mannitol and PEG 8000 having to be measured. The program sends tabular output to the screen and it may be written in a disk file, making observation of relationships and preparation of graphical representation simple. A sequence of data may be generated over temperature, concentration, or potential ranges by specifying an initial value, interval size, and number of intervals. Values are given for temperature, water density, molal and molar concentrations, g solute g −1 water, osmotic coefficient, g and mL water displaced g −1 solute, solute potential (MPa), and g solute and g water needed for a requested volume of solution.