ON THE EVALUATION OF B.E.T. CONSTANTS FROM THE B.E.T. ISOTHERM EQUATION
It is shown that the conventional (or unweighed) least squares method must not be used to evaluate the B.E.T. constants, Xm and C, when using a rearranged linear B.E.T. plot recently suggested in the literature. This is illustrated using literature data on water sorption in several foods. In this ca...
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| Autores principales: | , , |
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| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00221147_v42_n5_p1387_IGLESIAS |
| Aporte de: |
| Sumario: | It is shown that the conventional (or unweighed) least squares method must not be used to evaluate the B.E.T. constants, Xm and C, when using a rearranged linear B.E.T. plot recently suggested in the literature. This is illustrated using literature data on water sorption in several foods. In this case a semi‐weighted (or weighted) least squares analysis becomes necessary. It is also shown that the unweighted least squares analysis should not be applied even to the familiar linear B.E.T. plot. In this particular case, however, and because of a fortuitous coincidence, this procedure leads to not significant differences — at least in food research — in the numerical values. Copyright © 1977, Wiley Blackwell. All rights reserved |
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