Figure 5

Specificity test of Cu2+ fluorescence detection on the microcapsule array chip. In contrast to the Cu2+ concentration of 5 μM, the concentrations of Pb2+, Mn2+, Cr2+, and Ni2+ are 10 μM. Inset: Photo of the specificity test.

Specificity test of Cu2+ fluorescence detection on the microcapsule array chip. In contrast to the Cu2+ concentration of 5 μM, the concentrations of Pb2+, Mn2+, Cr2+, and Ni2+ are 10 μM. Inset: Photo of the specificity test.