Tracing Pb Pollution Penetration in Temperate Podzols. Ferro-Vázquez, C., Pérez-Rodríguez, M., Nóvoa-Muñoz, J., Klaminder, J., Bindler, R., & Martínez Cortizas, A. Land Degradation & Development, 2017. 00000
Tracing Pb Pollution Penetration in Temperate Podzols [link]Paper  doi  abstract   bibtex   
We combine high-resolution soil sampling with lead (Pb) analyses (concentrations and stable isotopes) in two temperate podzols, together with previous data obtained with selective Al and Fe dissolution techniques. We aim to assess how atmospheric Pb is incorporated into the soils during pedogenesis. Partial Least Squares modelling for Pb concentrations shows that the podzolization process has the largest effect on Pb concentration (80.3% of the variance). The proportion of inorganic secondary compounds, the input of fresh organic matter from the soil surface and the relative abundance of Fe vs Al are responsible for a small part of the Pb concentrations variance. Lead isotopic composition (206Pb/207Pb ratios) depends on soil organic matter content either fresh/poorly humified (57.3% of the variance) or humified (24.7% of the variance). The Pb linked to inorganic compounds and the overall podzolization process play a minor role in isotopic signature (5.3 and 3.7% of the variance, respectively). Soil pH appears to be the controlling variable of the different transport and retention mechanisms. The relatively low isotopic ratios observed in spodic horizons result from geogenic Pb released through the preferential dissolution of the isotopically distinct most weatherable minerals of the parent material in the eluvial horizons, which undergoes downward mobilization. An accurate knowledge of soil reactive components and formation mechanisms is essential to a correct diagnose of the scope of Pb pollution and a more effective design of remediation strategies.
@article{ferro-vazquez_tracing_2017,
	title = {Tracing {Pb} {Pollution} {Penetration} in {Temperate} {Podzols}},
	issn = {1099-145X},
	url = {http://onlinelibrary.wiley.com.proxy.ub.umu.se/doi/10.1002/ldr.2777/abstract},
	doi = {10.1002/ldr.2777},
	abstract = {We combine high-resolution soil sampling with lead (Pb) analyses (concentrations and stable isotopes) in two temperate podzols, together with previous data obtained with selective Al and Fe dissolution techniques. We aim to assess how atmospheric Pb is incorporated into the soils during pedogenesis. Partial Least Squares modelling for Pb concentrations shows that the podzolization process has the largest effect on Pb concentration (80.3\% of the variance). The proportion of inorganic secondary compounds, the input of fresh organic matter from the soil surface and the relative abundance of Fe vs Al are responsible for a small part of the Pb concentrations variance. Lead isotopic composition (206Pb/207Pb ratios) depends on soil organic matter content either fresh/poorly humified (57.3\% of the variance) or humified (24.7\% of the variance). The Pb linked to inorganic compounds and the overall podzolization process play a minor role in isotopic signature (5.3 and 3.7\% of the variance, respectively). Soil pH appears to be the controlling variable of the different transport and retention mechanisms. The relatively low isotopic ratios observed in spodic horizons result from geogenic Pb released through the preferential dissolution of the isotopically distinct most weatherable minerals of the parent material in the eluvial horizons, which undergoes downward mobilization. An accurate knowledge of soil reactive components and formation mechanisms is essential to a correct diagnose of the scope of Pb pollution and a more effective design of remediation strategies.},
	language = {en},
	urldate = {2017-09-11},
	journal = {Land Degradation \& Development},
	author = {Ferro-Vázquez, C. and Pérez-Rodríguez, M. and Nóvoa-Muñoz, J.c. and Klaminder, J. and Bindler, R. and Martínez Cortizas, A.},
	year = {2017},
	note = {00000},
	keywords = {Lead isotopes, Partial Least Squares modelling, atmospheric deposition, podzols},
	pages = {n/a--n/a},
}

Downloads: 0