X-ray diffraction modeling and electron microscopy techniques applied to the study of minerals in hypersaline soils

• Grant number: 16/09024-8
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: October 31, 2016
• End date: October 30, 2017
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Tiago Osório Ferreira
• Grantee: Lucas Resmini Sartor
• Supervisor: Robert C. Graham
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Institution abroad: University of California, Riverside (UCR), United States
• Associated to the scholarship: 14/11776-2 - Characterization of the physical environment, geochemistry of Fe and s and dynamics of mineral alteration on hypersaline tidal flats of Brazilian coastline, BP.DR

Abstract

This project aims to study soil clay minerals and mineral alteration in hypersaline tidal flat soils of Brazilian southeast and northeast regions. Recently, only a few soil studies have been developed on hypersaline soils of Brazilian coastline and there is limited information regarding to pedogenesis and geochemistry of these soils. The studied areas are located in the Acaraú River Basin, in the municipality of Acaraú-CE, and in the Sepetiba Bay, municipality of Rio de Janeiro-RJ. The objectives will be: i) identify, quantify and provide a characterization of the crystal chemistry of corase and fine clay of soil profiles; ii) investigate mineralogical alteration and phytoliths dissolution in an experiment carried out in halomorphic soils located in Ceará state. X-ray diffraction and electronic microscopy will be the mainly techniques applied to achieve the results. We aimed with this project to clarify aspects related to dynamics of Si in these soils and to provide data to understand the functioning of these ecosystems. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SARTOR, LUCAS RESMINI; GRAHAM, ROBERT C.; YING, SAMANTHA C.; ANDRADE, GABRIEL R. P.; MONTES, CELIA REGINA; FERREIRA, TIAGO OSORIO. Are hypersaline tidal flat soils potential silicon sinks in coastal wetlands?. Geoderma, v. 337, p. 215-224, MAR 1 2019. (14/11776-2, 16/09024-8, 16/21026-6)

SARTOR, LUCAS RESMINI; GRAHAM, ROBERT C.; YING, SAMANTHA C.; LUIS OTERO, XOSE; MONTES, CELIA REGINA; FERREIRA, TIAGO OSORIO. Role of Redox Processes in the Pedogenesis of Hypersaline Tidal Flat Soils on the Brazilian Coast. Soil Science Society of America Journal, v. 82, n. 5, p. 1217-1230, SEP-OCT 2018. (16/09024-8, 16/21026-6, 14/11776-2)