Fig. 2: Lead concentration in different parts of mint plants.
From: Biological impact of lead from halide perovskites reveals the risk of introducing a safe threshold
a Roots, b stems, and c leaves. The lead uptake ability (η, defined in Eq. 1) is reported in d. Data for lead concentration in leaves at 35.0 mg kg−1 are not available (N/A) as plants did not produce enough leaves at such a high level of lead. The maximum, minimum, and mean value of each distribution are reported in a–c.
