On the role of colloids in trace metal solid-solution partitioning in continental shelf waters: a comparison of model results and field data

Upwelling Enhances Mercury Particle Scavenging in the California Current System

“…The log K OC of THg in the SSF is 7.2 ± 0.3 in the open ocean and 6.6 ± 0.5 in the upwelling region. This is in line with the previous finding of Cui et al that the open ocean generally exhibits higher K d values when compared to the coastal regions ( p -value < 0.05) due to the so-called particle concentration effect where K d displays an inverse relationship with particle mass. , Notably, the upwelling region shows a higher POC concentration ( p -value < 0.05), averaging 28.1 μg/L, compared to the open ocean (7.6 μg/L), showing a concentration gradient that is consistent with the particle concentration effect on K OC values (Figure S1). Additionally, the value of K OC in the SSF is comparable to that in the LSF in both regions (LSF log K OC , upwelling: 6.6 ± 0.4; open ocean: 7.42 ± 0.1) ( t test; P -value > 0.05).…”

Upwelling Enhances Mercury Particle Scavenging in the California Current System

“…The log K OC of THg in the SSF is 7.2 ± 0.3 in the open ocean and 6.6 ± 0.5 in the upwelling region. This is in line with the previous finding of Cui et al that the open ocean generally exhibits higher K d values when compared to the coastal regions ( p -value < 0.05) due to the so-called particle concentration effect where K d displays an inverse relationship with particle mass. , Notably, the upwelling region shows a higher POC concentration ( p -value < 0.05), averaging 28.1 μg/L, compared to the open ocean (7.6 μg/L), showing a concentration gradient that is consistent with the particle concentration effect on K OC values (Figure S1). Additionally, the value of K OC in the SSF is comparable to that in the LSF in both regions (LSF log K OC , upwelling: 6.6 ± 0.4; open ocean: 7.42 ± 0.1) ( t test; P -value > 0.05).…”

The Effect of Particle Composition and Concentration on the Partitioning Coefficient for Mercury in Three Ocean Basins

“…The linear regression model in Figure 5 shows the relationship between log SPM (µg L −1 ) and log bulk K d (L kg −1 ) for the three ocean basins. A significant inverse correlation was observed in all basins, which is consistent with the findings reported by Moran et al (1996). Similar inverse relationships were observed between log K d of 210 Pb and 210 Po and SPM in these transects (Tang et al, 2017;Bam et al, 2020).…”

Dissolved and Particulate Heavy Metals in the Salado River (Santa FE, Argentina)

“…The calculated coefficients did not differ in more than one order of magnitude from those reported by other authors (Pettine et al, 1994;Moran et al, 1996;Owens et al, 1997) and those previously obtained by Gallo et al (2001).…”

Upwelling Enhances Mercury Particle Scavenging in the California Current System

“…The log K OC of THg in the SSF is 7.2 ± 0.3 in the open ocean and 6.6 ± 0.5 in the upwelling region. This is in line with the previous finding of Cui et al that the open ocean generally exhibits higher K d values when compared to the coastal regions ( p -value < 0.05) due to the so-called particle concentration effect where K d displays an inverse relationship with particle mass. , Notably, the upwelling region shows a higher POC concentration ( p -value < 0.05), averaging 28.1 μg/L, compared to the open ocean (7.6 μg/L), showing a concentration gradient that is consistent with the particle concentration effect on K OC values (Figure S1). Additionally, the value of K OC in the SSF is comparable to that in the LSF in both regions (LSF log K OC , upwelling: 6.6 ± 0.4; open ocean: 7.42 ± 0.1) ( t test; P -value > 0.05).…”

The Effect of Particle Composition and Concentration on the Partitioning Coefficient for Mercury in Three Ocean Basins

“…The linear regression model in Figure 5 shows the relationship between log SPM (µg L −1 ) and log bulk K d (L kg −1 ) for the three ocean basins. A significant inverse correlation was observed in all basins, which is consistent with the findings reported by Moran et al (1996). Similar inverse relationships were observed between log K d of 210 Pb and 210 Po and SPM in these transects (Tang et al, 2017;Bam et al, 2020).…”

Dissolved and Particulate Heavy Metals in the Salado River (Santa FE, Argentina)

“…The calculated coefficients did not differ in more than one order of magnitude from those reported by other authors (Pettine et al, 1994;Moran et al, 1996;Owens et al, 1997) and those previously obtained by Gallo et al (2001).…”

Upwelling Enhances Mercury Particle Scavenging in the California Current System

“…The log K OC of THg in the SSF is 7.2 ± 0.3 in the open ocean and 6.6 ± 0.5 in the upwelling region. This is in line with the previous finding of Cui et al that the open ocean generally exhibits higher K d values when compared to the coastal regions ( p -value < 0.05) due to the so-called particle concentration effect where K d displays an inverse relationship with particle mass. , Notably, the upwelling region shows a higher POC concentration ( p -value < 0.05), averaging 28.1 μg/L, compared to the open ocean (7.6 μg/L), showing a concentration gradient that is consistent with the particle concentration effect on K OC values (Figure S1). Additionally, the value of K OC in the SSF is comparable to that in the LSF in both regions (LSF log K OC , upwelling: 6.6 ± 0.4; open ocean: 7.42 ± 0.1) ( t test; P -value > 0.05).…”

The Effect of Particle Composition and Concentration on the Partitioning Coefficient for Mercury in Three Ocean Basins

“…The linear regression model in Figure 5 shows the relationship between log SPM (µg L −1 ) and log bulk K d (L kg −1 ) for the three ocean basins. A significant inverse correlation was observed in all basins, which is consistent with the findings reported by Moran et al (1996). Similar inverse relationships were observed between log K d of 210 Pb and 210 Po and SPM in these transects (Tang et al, 2017;Bam et al, 2020).…”

Dissolved and Particulate Heavy Metals in the Salado River (Santa FE, Argentina)

“…The calculated coefficients did not differ in more than one order of magnitude from those reported by other authors (Pettine et al, 1994;Moran et al, 1996;Owens et al, 1997) and those previously obtained by Gallo et al (2001).…”