246094.fig.001
Figure 1: Curve describing the formation of the Eu(III)/N3 system (CEu(III)/mol L−1: ● = 28.60 × 10−3, ▼ = 34.32 × 10−3, ■ = 39.85 × 10−3, and ◆ = 45.18 × 10−3).