Table 2: Best-fit chemical models of His complexes with Pb(II), Cd(II), and Hg(II) in DMSO-water mixtures.

DMS % v/vlog 𝛽 m l h (SD)NP 𝑈 c o r r × 1 0 8 SkewnessKurtosisχ 2 𝑅 -factorpH range
110120121122123124

Pb(II)

0.09.37 (40)18.36 (40)25.07 (41)31.10 (42)36.90 (42)380.1370.677.1532.110.0023.5–9.0
10.09.65 (29)19.29 (28)26.02 (28)31.78 (30)37.54 (29)290.3850.062.452.660.0043.5–9.0
20.09.10 (30)18.59 (30)25.29 (31)31.07 (33)36.67 (35)190.0940.644.225.740.0013.7–9.0
30.09.80 (13)19.21 (10)25.65 (12)30.82 (19)36.43 (16)440.3280.594.1910.670.0043.5–9.0
40.010.81 (34)19.64 (32)25.90 (34)31.35 (39)36.70 (39)471.3230.353.1418.380.0083.5–9.0
50.010.03 (9)19.29 (8)25.31 (9)30.22 (16)35.46 (15)450.2701.399.6818.300.0033.5–9.0
60.09.77 (16)19.07 (13)25.02 (17)29.90 (29)35.02 (30)490.9150.865.169.900.0063.5–9.0

Cd(II)

0.010.25 (14)17.80 (15)24.35 (16)30.55 (17)36.26 (18)500.2821.8512.0359.280.0033.0–8.0
10.010.63 (26)18.36 (26)25.02 (29)31.19 (29)36.96 (30)490.5222.4513.6668.130.0053.0–8.0
20.010.22 (12)17.63 (12)23.97 (20)29.88 (28)34.95 (69)370.3621.507.9118.230.0033.0–8.0
30.011.01 (8)18.55 (7)24.90 (10)30.55 (14)35.85 (18)440.2440.776.0313.820.0033.5–8.0
40.011.78 (6)19.05 (6)25.15 (5)30.45 (13)35.25 (7)980.630−0.755.6456.260.0032.0–8.0
50.012.11 (7)19.28 (6)25.22 (6)30.24 (16)35.01 (8)960.751−0.936.8080.000.0042.0–8.0
60.012.10 (7)18.91 (6)24.83 (5)29.68 (17)220.3561.386.325.520.0033.5–8.5

Hg(II)

0.010.09 (24)13.18 (34)33.83 (23)35.21 (87)900.824−0.784.7047.160.0042.0–8.0
10.012.42 (49)16.78 (85)31.60 (65)9599.96−0.716.23307.70.04942.0–8.0
20.011.57 (33)14.78 (55)32.38 (86)35.81 (40)654.2950.195.38107.97.01032.0–9.0
30.011.57 (32)14.59 (35)34.56 (29)37.27 (36)650.533−0.267.169.680.0032.0–9.0
40.012.31 (20)16.13 (23)34.55 (14)36.83 (22)360.192−0.204.1515.700.0012.0–9.0
50.012.31 (31)15.58 (34)35.00 (29)37.36 (36)1060.650−0.554.1920.310.0032.0–9.0
60.012.49 (22)15.55 (28)34.87 (19)37.40 (24)1050.668−0.093.4023.670.0032.0–9.0