Influence of Physicochemical Properties and Parent Material on Chromium Fractionation in Soils
| العنوان: | Influence of Physicochemical Properties and Parent Material on Chromium Fractionation in Soils |
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| المؤلفون: | Laura Rodríguez-González, Diego Soto-Gómez, David Fernández-Calviño, Claudia Campillo-Cora, Manuel Arias-Estévez |
| المصدر: | Processes, Vol 9, Iss 1073, p 1073 (2021) Investigo. Repositorio Institucional de la Universidade de Vigo Universidade de Vigo (UVigo) Processes Volume 9 Issue 6 |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | inorganic chemicals, 2303.18 Metales, Environmental remediation, Soil texture, chemistry.chemical_element, Bioengineering, 3308 Ingeniería y Tecnología del Medio Ambiente, Fractionation, TP1-1185, 010501 environmental sciences, 010502 geochemistry & geophysics, 01 natural sciences, spiking, Chromium, 2511.04 Química de Suelos, Chemical Engineering (miscellaneous), H2O, QD1-999, 0105 earth and related environmental sciences, predict, Magnesium, Process Chemistry and Technology, Phosphorus, Chemical technology, Extraction (chemistry), modeling, heavy metal, Chemistry, chemistry, CaCl2, Environmental chemistry, Soil water, extraction, DTPA |
| الوصف: | Chromium is an element that possess several oxidation states and can easily pass from one to another, so its behavior in soils is very complex. For this reason, determining its fate in the environment can be difficult. In this research work we tried to determine which factors affect the chromium fractionation in natural soils, conditioning chromium mobility. We paid special attention to the parent material. For this purpose, extraction experiments were carried out on spiked soils incubated for 50–60 days, using H2O, CaCl2 and diethylenetriaminepentaacetic acid (DTPA). The most efficient extraction rate in all soils was achieved using water, followed by CaCl2 and DTPA. We obtained models with an adjusted R2 of 0.8097, 0.8471 and 0.7509 for the H2O Cr, CaCl2 Cr and DTPA Cr respectively. All models were influenced by the amount of chromium added and the parent material: amphibolite and granite influenced the amount of H2O Cr extracted, and schist affected the other two fractions (CaCl2 and DTPA). Soil texture also played an important role in the chromium extraction, as well as the amounts of exchangeable aluminum and magnesium, and the bioavailable phosphorus. We concluded that it is possible to make relatively accurate predictions of the behavior of the different Cr fractions studied, so that optimized remediation strategies for chromium-contaminated soils can be designed on the basis of a physicochemical soil characterization. Xunta de Galicia | Ref. ED431C 2017/62-GRC Xunta de Galicia | Ref. ED481A-2020/084 Ministerio de Economía y Competitividad | Ref. CTM2015-73422-JIN Ministerio de Educación | Ref. FJC2019-039176-I |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2227-9717 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fd3b1c789afef8ea5315750c77ac7a4 https://www.mdpi.com/2227-9717/9/6/1073 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9fd3b1c789afef8ea5315750c77ac7a4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 22279717 |
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