História da Toxicologia. Parte I – breve panorama brasileiro

Fukushima, André Rinaldi; Azevedo, Fausto Antonio de

doi:10.22280/revintervol1ed1.3

Cited by 5 publications

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“…Some species of Se and Cr are essential for the functioning of the human organism; therefore these species are of great interest to develop methods to determine the various oxidation states of species, since each of them has different effect on the organisms [62]. Various analytical techniques are employed for the determination of different matrices by analysis by suspension [59].…”

Section: Suspensionmentioning

confidence: 99%

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

Carvalho¹,

Coelho²,

Coelho³

et al. 2014

Sample Preparation

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Abstract:This review provides an overview and discusses different analytical strategies that minimize or eliminate the preparation of samples for speciation of organic and inorganic species of As, Cr and Se in samples of biological interest. These metals are important for the human body and the presence of various chemical forms of metals determines its essentiality and toxicity, thus speciation comes as an important tool for the study of biological samples. However, speciation requires a reduction in the steps of sample preparation, allowing a sample investigation in its most native form in order to reduce the changes in chemical species. The strategies proposed for speciation of these metals include: solid phase extraction, point cloud extraction, suspension and direct analysis. Selected methods proposed for the speciation of organic and inorganic species of As, Cr and Se were reviewed including their main figures of merit, advantages and disadvantages.

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Section: Suspensionmentioning

confidence: 99%

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

Carvalho¹,

Coelho²,

Coelho³

et al. 2014

Sample Preparation

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“…In 1972, the Brazilian Society of Toxicology (SBTox) was founded with the intention of uniting professors, professionals, companies, and organizations interested in the development of toxicology in the country. Four years later, the first Brazilian scientific event in toxicology, the ''1st Congress of Tropical Toxicology'', took place in Manaus, and in 1979, the first official SBTox Congress, the ''1st Brazilian Toxicology Congress'', took place in a costal city in São Paulo state (2).…”

Section: Introductionmentioning

confidence: 99%

Pioneer women in the development of toxicology in Brazil

Melo

2021

Braz J Med Biol Res

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Women have always played an important role in the development of toxicology all over the world. Specifically in Brazil, toxicology has had greater female representation than other countries, but women's participation at high hierarchical levels is low. Although more than 62% of the members of the Brazilian Society of Toxicology are women, only 7 out of the 22 presidents have been women throughout its 48 years of existence. This article aims to celebrate women in the field of toxicology in Brazil, based on interviews with five of these scientists who have changed the field of toxicology in Brazil as we know it today, each in their specific sub-areas. These women are: Dr.

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“…O conhecimento toxicológico das espécies químicas presentes no meio ambiente é necessário, pois é importante compreendê-las e determiná-las no âmbito da sua existência, ocorrência, comportamentos e mecanismos de ação etc. (Fukushima, 2008). Portanto, o estudo dos elementostraço vem ganhando destaque principalmente quando esses elementos estão dispostos no meio ambiente em diferentes estados de oxidação, consequentemente, com reatividades diferentes, fazendo necessária a diferenciação das espécies de um mesmo elemento.…”

Section: Introductionunclassified

Desenvolvimento de um método para determinação de Sb(III) e Sb total em amostra de interesse ambiental utilizando geração de hidretos acoplada à espectrometria de absorção atômica com chama

Néri¹

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Development of a method for determination of Sb(III) and total Sb in environmental samples of interest by hydride generation atomic absorption spectrometryIn this work, a method for Sb(III) and total Sb determination of using NaBH 4 reagent online with by generating hydrides atomic absorption spectrometry was developed. For the determination of Sb(III) variables such as sample flow-rate, flow-rate and concentration of HCl and NaBH 4 were studied. For the determination of total Sb variables such as concentration and flow-rate of NaBH 4 were studied to ensure direct analysis by hydride generation using online prereduction of Sb(V). The analytical frequency was 30 analyzes per hour and precision, relative standard deviation, for Sb(III) was 0.38% and for total Sb was 0.08%. The accuracy of the proposed method was evaluated by addition and recovery tests applied in water samples and analysis of certified materials (APS 1066 sediments and APS 1075 drinking water). Recovery tests were in the range of 98.8 -103.7%. Limits of detection and quantification for determination of Sb(III) were 0.22 g L -1 and 0.73 g L -1 and the total Sb were 0.25 g L -1 and 0.82 g L -1 , respectively. Finally, samples of seawater, algae, crustaceans and sediments of Ubatuba-SP were analyzed by the developed method.

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História da Toxicologia. Parte I – breve panorama brasileiro

Cited by 5 publications

References 0 publications

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

Strategies to increase selectivity of analytical methods for As, Cr and Se speciation in biological samples: A review

Pioneer women in the development of toxicology in Brazil

Desenvolvimento de um método para determinação de Sb(III) e Sb total em amostra de interesse ambiental utilizando geração de hidretos acoplada à espectrometria de absorção atômica com chama

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