Video Experimental Relacionado

Updated: Jan 8, 2026

Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

Published on: July 1, 2016

Análisis multivariante de la distribución espacial de elementos químicos en sedimentos fluviales evaluada mediante la

Isabella Cristina Dall'Oglio¹, Fernando Rodolfo Espinoza-Quiñones¹, Phallcha Luízar Obregón²

¹Postgraduate Program of Chemical Engineering, West Paraná State University, Toledo, Brazil.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering

|December 15, 2025

Abstract:

This study applies total reflection X-ray fluorescence (TXRF) to assess multielement contamination in river sediments from a small urban basin in western Paraná, Brazil. Eleven elements (Al, K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn and Pb) were quantified using an internal standard, and the concentration data were evaluated using Spearman correlation, principal component analysis and hierarchical cluster analysis. Cu, Zn and especially Pb reached concentrations up to 703, 349 and 344 mg kg^-1, with several values exceeding Brazilian guideline thresholds for soils impacted by anthropogenic activities. Multivariate results indicate that Ti, Cr and Fe form a predominantly lithogenic assemblage related to the basalt-derived parent material, whereas Cu and Zn define a distinct anthropogenic group associated with urban, industrial and wastewater inputs; Mn, Ni, Ca and Pb show mixed origin. The combined use of TXRF and multivariate tools thus provides a robust, resource-efficient framework for sediment monitoring, source differentiation and support of pollution control strategies in contaminated aquatic environments.

Palabras clave:

Sedimentos fluviales TXRF análisis multielemental análisis estadístico multivariante

Más Videos Relacionados

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

Published on: September 1, 2020

Quantifying X-Ray Fluorescence Data Using MAPS

Quantifying X-Ray Fluorescence Data Using MAPS

Published on: February 17, 2018

Videos de Conceptos Relacionados

Atomic Emission Spectroscopy: Overview

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...

Atomic Emission Spectroscopy: Lab

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...