ICP-OES was also used to further confirm the presence of silver ions in
the structure and to measure the silver to zinc ratio, as can be seen in
Table 3. The ratio of silver to zinc ions was shown to be around 0.5:1,
which is very similar to the zinc to silver ratio during the adsorption
process. Although the ratio calculated via ICP is slightly higher than
the calculated ratio during adsorption, the difference is reasonably
small and may have arisen from systematic and random errors throughout
the experimental synthesis process. This shows that the silver
adsorption into the structure was reasonably effective.