@misc{10481/66012,
year = {2020},
month = {10},
url = {http://hdl.handle.net/10481/66012},
abstract = {Soil arsenic (As) pollution is still a major concern due to its high toxicity and carcinogenicity,
thus, the study of decontamination techniques, as the organic amendment applications, keeps
upgrading. This research evaluates the potential remediation of peat in di erent As-polluted soils,
by assessing the decrease of As solubility and its toxicity through bioassays. Obtained reduction in As
solubility by peat addition was strongly related to the increase of humic substances, providing colloids
that allow the complexation of As compounds. Calcareous soils have been the least e ective at bu ering
As pollution, with higher As concentrations and worse biological response (lower soil respiration and
inhibition of lettuce germination). Non-calcareous soils showed lower As concentrations due to the
higher iron content, which promotes As fixation. Although in both cases, peat addition improves
the biological response, it also showed negative e ects, hypothetically due to peat containing toxic
polyphenolic compounds, which in the presence of carbonates appears to be concealed. Both peat
dose tested (2% and 5%) decreased drastically As mobility; however, for calcareous soils, as there
is no phytotoxic e ect, the 5% dose is the most recommended; while for non-calcareous soils the
e cient peat dose for As decontamination could be lower.},
organization = {Spanish Ministry of Science, Innovation and Universities 	
RTI 2018-094327-B-I00
FPU-18/02901},
publisher = {Mdpi},
keywords = {Soil remediation},
keywords = {Toxicity bioassays},
keywords = {Humic substances},
keywords = {Calcium carbonate},
keywords = {Iron oxides},
keywords = {Polyphenolic compounds},
title = {Arsenic Fixation in Polluted Soils by Peat Applications},
doi = {10.3390/min10110968},
author = {Aguilar Garrido, Antonio and Romero Freire, Ana and García Carmona, Minerva and Martín Peinado, Francisco José and Sierra Aragón, Manuel and Martínez Garzón, Francisco Javier},
}