For aquatic environments, comparable results are achieved if the test is based on ion concentrations because dissolution is the principal exposure mechanism [33],[33].
Quantification of the peaks was based on ion counts of fragmented m/z 271 ions, and the concentrations and weights of genistein and its conjugates were measured in 'genistein aglycone only' units.
Another approach is based on ion chemistry.
QICAR has previously been used to predict ecotoxicity of inorganic metal ions based on ion properties.
Although the focus has been on neutral-atom clocks, those based on ions have comparable accuracy, but their stability is limited because they use only a single ion.
The divalent metals (i.e., Cu, Cd, Ba, Sr, Ca, Zn, and Co) diffuse into an alginate solution and the cation-binding crosslinks the alginate in a highly cooperative manner, thereby forming a gel, with the crosslinking density being based on the original ion concentration.
A characteristic time for ion diffusion τm was identified as λ2m/D where λm is the Debye length based on the maximum ion concentration.
It is important to note that the Hofmeister series is based on the concentration of ions needed to reach the ccc; it says nothing about the final properties of the resultant silica gel.
Metal contamination in a river has often been assessed based on total metal ion concentrations without relating them with the amount of suspended solids.
