Carbonyl Ligands

Mechanistic description of lead sorption onto nanoplastics

“…The PSL surfactant p K a was estimated to be 4.64 which is a coherent value compared to known COOH p K a . 31 The PSL free p K a was estimated to be 4.11, which is consistent with acid's p K a , used during its polymerization, estimated to be 4.05. 32 These results are also consistent with the p K a values determined for the carboxylic functional groups of natural organic matter.…”

“…For PSL surfactant , the calculated log K (NPs–COO)2Pb was 3.76, which was close to the log K (CH 3 −COO)2Pb = 4.08. 31 For PSL free , the calculated log K NPsCOOPb + was 2.3, in line with the log K CH 3 COOPb + = 2.68. 31 For the m-NPs, Pb( ii ) was bound as a bi-ligand complex, with log K (CH 3 COO)2Pb = 4.94.…”

“…31 For PSL free , the calculated log K NPsCOOPb + was 2.3, in line with the log K CH 3 COOPb + = 2.68. 31 For the m-NPs, Pb( ii ) was bound as a bi-ligand complex, with log K (CH 3 COO)2Pb = 4.94. This value is higher than that of (CH 3 COO) 2 Pb with log K = 4.08, suggesting a high affinity for Pb.…”

“…S1† for the diameter size).bp K a fixed to the acetate p K a . 31 cRMSE based on the p K a extrapolation.…”

“…In front of this bottleneck, the p K a of e-NPs and m-NPs was fixed to 4.76, the acetic acid p K a value. 31…”