“…In a study performed in central China, Pang and his colleagues analyzed the concentrations of BPs in sewage sludge in Henan Province in China and found that the mean concentrations of BPA, BPS, BPF, BPAF, BPAP, BPB, and BPZ were 140, 43.4, 7.98, 1.04, 0.88, 0.38, and 0.33 ng g −1 dw, respectively. 67 In another analysis performed by Sun et al, they investigated the occurrence of BPs in seven wastewater treatment plants located in Xiamen, China. 68 The rank of the concentrations of BPA, BPAF, BPE, BPF, and BPS detected in the influent, effluent, and sludge were BPA ≫ BPS ≈ BPF > BPE > BPAF, BPA ≫ BPE > BPF ≈ BPAF > BPS, and BPA ≫ BPF > BPAF > BPS > BPE, respectively.…”