fig2
Figure 2. Spearman correlation between concentration levels of 7 BPs in 4 matrices. Significant variances are shown as *P < 0.05 and **P < 0.01, and are marked in the upper left of the corresponding squares. BP: Bisphenol; BPA: bisphenol A; BPS: bisphenol S; BPF: bisphenol F; BPP: bisphenol P; BPAF: bisphenol AF; BPAP: bisphenol AP; BPZ: bisphenol Z.