Dissolution of PS-glass in acidic and neutral pH is higher than that of alkaline pH.
When solution pH is higher than pH 4.34, adsorbent's surface will become predominantly negative charged, while the opposite applies when solution pH is lower than pH 4.34.
As the solution pH is higher than 5.94, the surface of the MPKSF exhibits greater formation of hydroxide ions.
If solution pH is higher than 8, then one electron without protons is involved in the electrooxidation.
When solution pH is higher than 8.2, Zn(OH 2(s) starts to form and becomes main species only after ZnS s) in higher pH.
When the pH is higher, i.e., at pH of 6.5 and 7.4, the release rate is lower since only the proteins trapped at the surface are released.
The surface of ZnO became positively charged at a pH lower than pHzpc; however, a negative charge is expected when the pH is higher than pHzpc.
It should be noted that soil pH is higher than that suggested for optimal phosphorus solubility and therefore availability to the plant is reduced.
When the pH is higher than 8.0 and lower than 10.5, the GNP solution was stable for more than six months.
They distinguished between "local pH" and "solution pH", the pH inside the pores (local pH) is higher than the pH in the solution outside the pores (solution pH) and this difference increases as the pore diameter decreases.
