TY - JOUR
T1 - Use of Pitzer's Equations to Determine the Media Effect on the Formation of Lead Chloro Complexes
AU - Millero, Frank J.
AU - Byrne, Robert H.
PY - 1984/1/1
Y1 - 1984/1/1
N2 - The spectrophotometric measurements of chloro complexes of lead in aqueous HCl, NaCl, MgCl 2 and CaCl 2 solutions at 25°C have been analyzed using Pitzer's specific interaction equations. Parameters for activity coefficients of the complexes PbCl + , PbCl 2 0 and PbCl 3 − have been determined for the various media. Values of K1= 30.0 ± 0.6">K1= 30.0 ± 0.6 , K2= 106.7 ± 2.1">K2= 106.7 ± 2.1 and K3= 73.0 ± 1.5">K3= 73.0 ± 1.5 were obtained for the cumulative formation constants. [Pb2++ nCl−→ PbCln2−n)">Pb2++ nCl−→ PbCln2−n) ]. These values are in reasonable agreement with literature data. The Pitzer parameters for the PbCl ion pairs in various media were used to calculate the speciation of Pb 2+ in an artificial seawater solution.
AB - The spectrophotometric measurements of chloro complexes of lead in aqueous HCl, NaCl, MgCl 2 and CaCl 2 solutions at 25°C have been analyzed using Pitzer's specific interaction equations. Parameters for activity coefficients of the complexes PbCl + , PbCl 2 0 and PbCl 3 − have been determined for the various media. Values of K1= 30.0 ± 0.6">K1= 30.0 ± 0.6 , K2= 106.7 ± 2.1">K2= 106.7 ± 2.1 and K3= 73.0 ± 1.5">K3= 73.0 ± 1.5 were obtained for the cumulative formation constants. [Pb2++ nCl−→ PbCln2−n)">Pb2++ nCl−→ PbCln2−n) ]. These values are in reasonable agreement with literature data. The Pitzer parameters for the PbCl ion pairs in various media were used to calculate the speciation of Pb 2+ in an artificial seawater solution.
UR - https://digitalcommons.usf.edu/msc_facpub/1671
UR - https://doi.org/10.1016/0016-7037(84)90206-0
U2 - 10.1016/0016-7037(84)90206-0
DO - 10.1016/0016-7037(84)90206-0
M3 - Article
VL - 48
JO - Geochimica et Cosmochimica Acta
JF - Geochimica et Cosmochimica Acta
ER -