Levels of Metallic Cations in the Surface Sediments in the Vicinity of the Três Marias Dam Lake (Brazil) Determined by ICP-MS and Microwave Sample Preparation

In this work, the use of complexing acids (HF and HCl) combined with HNO3 was evaluated for lipstick digestion and further Cd and Pb determination by ICP-MS.

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Determination of Selenium in Bovine Semen by ICP-MS Using Formic Acid for Sample Preparation

Journal of the Brazilian Chemical Society ◽

10.21577/0103-5053.20170089 ◽

2017 ◽

Cited By ~ 2

Author(s):

Silmara Bianchi ◽

Clarice Amaral ◽

Caroline Silva ◽

Ana Rita Nogueira

Keyword(s):

Sample Preparation ◽

Formic Acid ◽

Bovine Semen ◽

Icp Ms

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Green and efficient sample preparation method for the determination of catalyst residues in margarine by ICP-MS

Talanta ◽

10.1016/j.talanta.2017.06.037 ◽

2017 ◽

Vol 174 ◽

pp. 394-400 ◽

Cited By ~ 9

Author(s):

Carla Andrade Hartwig ◽

Rodrigo Mendes Pereira ◽

Diogo La Rosa Novo ◽

Dirce Taina Teixeira Oliveira ◽

Marcia Foster Mesko

Keyword(s):

Sample Preparation ◽

Preparation Method ◽

Sample Preparation Method ◽

Icp Ms

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Germanium determination in environmental object by the method of mass spectrometry with inductively coupled plasma

Ukrainian Chemistry Journal ◽

10.33609/0041-6045.85.4.2019.110-113 ◽

2019 ◽

Vol 85 (4) ◽

pp. 110-113

Author(s):

Olexandr Ponomarenko ◽

Anatolyi Samchuk ◽

Kateryna Vovk ◽

Igor Shvaika ◽

Ganna Grodzinskaya

Keyword(s):

Mass Spectrometry ◽

Sample Preparation ◽

Inductively Coupled Plasma ◽

Microwave Field ◽

Antitumor Effects ◽

Inductively Coupled ◽

Ms Analysis ◽

Icp Ms ◽

Relative Standard

The analytical technologies of sample preparation of rocks and mushrooms using the microwave field for the determination of germanium by the method of mass spectrometry with inductively coupled plasma (ICP-MS analysis) have been developed. Germanium is a rare element. Germanium is homology of silicon and carbon. To date, the definition of low content of germanium in geological objects is a rather complex analytical task, which requires its concentration - extraction, co-precipitation, ion exchange. At present, the harmonious combination of the method of natural objects decomposition in the microwave field and germanium determination using ICP-MS analysis is particularly promising. Sample preparation of silicate rocks for ICP-MS determination of germanium was carried out by decomposition in a mixture of hydrofluoric, phosphate and nitric acids (5: 5: 2) in a microwave oven program at 240°C for 30 min. Sample preparation of mushrooms for ICP-MS germanium determination was carried out according to the following scheme. Initially, the dried sample was sealed in the presence of CaO, after dissolving it in a mixture of HNO3+HF+H3PO4 (6:6:1). Ge solution was extracted by Nazarenko V.A. extraction method. The developed analytical schemes have made it possible to significantly reduce the duration and labor intensity of sample preparation. The obtained solutions were analyzed using an inductively coupled plasma mass spectrometer. The developed method for determining germanium by ICP-MS analysis has been successfully tested on standard rock samples. The obtained results are in accordance with the accepted attribute, the relative standard deviation Sr ranges from 0.7-0.9. The data on the content and distribution of germanium in the Boletales fungi are obtained. They indicate wild mushrooms contain high levels of germanium, especially Boletus and Mushroom biospores. These studies are necessary because the essential properties of germanium and its compounds attract special attention of scientists today. Complementary Ge compounds which have hypotensive, bactericidal, antiviral and antitumor effects have already been synthesized.

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GOLD PROVENANCE AND CHARACTERIZATION USING MICRO X-RAY FLUORESCENCE (µXRF): PRELIMINARY RESULTS/ PROVENIÊNCIA E CARACTERIZAÇÃO DE OURO COM MICRO FLUORESCÊNCIA DE RAIOS X (μXRF): RESULTADOS PRELIMINARES

Journal of Sedimentary Environments ◽

10.12957/jse.2018.37905 ◽

2018 ◽

Vol 3 (3) ◽

pp. 155-165

Author(s):

William Murussi Canto ◽

Hamilton Santos Gama Filho ◽

Marcelino José dos Anjos ◽

Armando Dias Tavares Jr. ◽

Mauro César Geraldes

Keyword(s):

Sample Preparation ◽

Pure Gold ◽

Noninvasive Technique ◽

X Ray ◽

Preliminary Results ◽

Icp Ms ◽

Para Determinar ◽

Made In ◽

Gold Digging

This work presents some preliminary results that allows to characterize gold samples using Micro X-Ray Fluorescence/µXRF. The first aim of this work is to apply a noninvasive technique, preserving the sample integrity, in order to identify the composition of gold samples and to recognize their possible geographical provenance. Samples have been obtained in geographically distinct gold-digging sites, in three Brazilian and one Colombian areas. These samples were processed only by fusion into a furnace at 1,200 ºC. The proportion of Au, Ag and Cu were measured in gold samples. The results of this work, allowed to characterize and to identify quite well the pure gold provenance, using µXRF instrumentation and related techniques. Further work is in progress to determine the behavior of mixed gold samples from different provenances. Besides that, measurements with different sample preparation will be made, in order to compare the results obtained in this work with those obtained by LA-ICP-MS techniques. ResumoEste trabalho apresenta resultados preliminares que permitem caracterizar amostras de ouro utilizando a Micro Fluorescência de Raios-X/ µXRF. O primeiro objetivo deste trabalho é aplicar uma técnica não invasiva, preservando a integridade da amostra, para identificar a composição de amostras de ouro e reconhecer a sua possível proveniência geográfica. As amostras foram obtidas em locais de exploração de ouro geograficamente distintos, em três áreas brasileiras e uma colombiana. Estas amostras foram sugeitas a fusão a 1.200 ºC, num forno. A proporção de Au, Ag e Cu foi medida em amostras de ouro. Os resultados deste trabalho permitiram caracterizar e claramente identificar a proveniência de ouro puro, utilizando resultados de µXRF. Estão em andamento outros trabalhos para determinar o comportamento da mistura de amostras de ouro de diferentes procedências. Além disso, serão efetuadas medições com diferentes preparações de amostras, a fim de comparar os resultados obtidos neste trabalho com os que estão sendo aquiridos com técnicas de LA-ICP-MS.

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