In order to
determine this effect, PL measurements are performed on samples
comprising 0.1 mL of 2.4 ppb total aflatoxin standard solution and
10 mL of colloidal ZnS QDs combined at different reaction temperatures.
The results of these sample measurements are summarized
in Fig. 6b. We find the highest PL intensity exhibited by
samples created at 25 C, which we take to be the optimum reaction
temperature for maximal aflatoxin sensitivity.