Advanced search
Start date
Betweenand

In situ evaluation of the lability of trace metals at Pantanal of Nhecolândia, MS, Brazil, using DGT technique with mixed binding layer for simultaneouse determination of cations e anions

Grant number: 19/07359-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): August 01, 2019
Effective date (End): January 31, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Amauri Antonio Menegário
Grantee:Carlos Eduardo Eismann
Home Institution: Centro de Estudos Ambientais (CEA). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Associated research grant:16/14227-5 - Climatic changes and environmental impacts in wetlands of Pantanal region (Brazil): quantification, control factors and long term temporal modeling, AP.PFPMCG.TEM

Abstract

At the Pantanal of Nhecolandia region, a diversity of lakes with a wide variety of biogeochemical and hydrological conditions and a complex system of saline and alkaline lakes with singular characteristics, which its biogeochemical behavior is just partially understood. Identifying and quantifying the labile concentrations give valuable information about the diverse and complex biogeochemical processes that influence the biogeoavailability of a given chemical element. The DGT (Diffusive Gradients in Thin Films) technique is widely used in studies about the availability of trace elements at the natural environment. The present work intends to evaluate in situ the labile concentrations of trace elements present at the waters of Nhecolândia lakes with different characteristics (green, black and crystalline waters) using DGT devices with mixed binging layer for the simultaneous determination of cations and anions. Previous experiments will be performed aiming the optimization of the methods to allow its effective use under the challenging conditions to be found at the in situ studies. The determination and quantification of the simples will be performed at the Environmental Studies Center (CEA) of the Unesp of Rio Claro using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The present work intends to complement the researches developed at the Projeto Temático (16/14227-5) and Projeto Regular (2018/17069-7) supported by Fapesp.