The buffer range spanned from pH 3.3 to 5.3 with an optimal buffering at pH 4.5 and a buffer value of 0.007 mol/(l×pH).
The buffer range spanned from pH 5 to 7 with optimal buffering at pH 6.3 and a buffer value of 0.0005 mol/(l×pH) and from 7.2 to 9 with optimal buffering at pH 8.4 and a buffer value of 0.0006 mol/(l×pH).
The buffer range spanned from pH 3.3 to 5.3 with optimal buffering at pH 4.35 and a buffer value of 0.004 mol/(l×pH).
A solution of 20 µM (0.2%) α-amylase in water (Fig. 2,d and 3,e) was found to have a buffer power of 66 µmol (H+) and 22 µmol (OH−) with a buffer value of 0.003 mol/(l×pH) at pH 6.3 and a buffer value of 0.01 mol/(l×pH).
The first was at pH 4.3 with a buffer value of 0.005 mol/(l×pH), whereas the second was at pH 6.5 with a buffer value of 0.01 mol/(l×pH).
A solution of 10 µM (0.1%) amyloglucosidase and 40 µM (0.2%) α-amylase (Fig. 2,e) was found to have an acidic buffer power of 114 (H+) and 8 µmol (OH−) with a buffer optima at pH 4.5 and a buffer value of 0.007 mol/(l×pH).
For example, a 25 mM bicarbonate solution with a non-bicarbonate buffer value of 2 10 meq L-1 pH-1 needs 3 12 s for a half-change in hydrogen concentration following the abrupt increase in PCO2 from 5 to 11 kPa [ 105].
The hemolymph had a high bicarbonate concentration of 20.9 mM and a total buffer value of 51.5 meq L-1 pH-1.
In this work, we develop a hydro-economic modeling framework to quantify the effects of changes in well yields on the buffer value of groundwater, and apply this model to an illustrative case study of tomato production in California's Central Valley.
Furthermore, it is observed experimentally that coating layers reduce moisture transfer and, thus, moisture buffer value of multilayered materials.
