Atomic absorption spectrometry – A multi element technique

Ferreira, Sérgio L.C.; Bezerra, Marcos Almeida; Santos, Adilson S.; Santos, Walter Nei Lopes dos; Novaes, Cléber Galvão; Oliveira, Olívia Maria Cordeiro de; Oliveira, Michael L.; Garcia, Rui Jesus Lorenzo

doi:10.1016/j.trac.2017.12.012

Cited by 153 publications

(42 citation statements)

References 60 publications

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“…Finalmente la última técnica es la generación de hidruros o vapores químicos la cual posee gran sensibilidad, trabaja por medio de la formación de hidruros de los metales a analizar los cuales luego son atomizados para su medición, esta técnica se ha visto restringida a cierto grupo de metales que se consideran más difíciles de trabajar en las otras técnicas de absorción atómica como As, Sb, Se, Bi, Cd, Pb entre otros y en el caso del Hg, se desarrolló una técnica derivada de la generación de hidruros la cual se conoce como vapor frio, la cual es una de las más recomendadas para la determinación de mercurio [34].…”

Section: A Espectrometría De Absorción Atómicaunclassified

Contaminación del agua por metales pesados, métodos de análisis y tecnologías de remoción. Una revisión

et al. 2020

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Los sistemas de producción industrial actuales usan metales pesados para la extracción de un material o como elemento en la refinación de un producto en particular lo que en principio resulta en la obtención del producto deseado con relativos bajos costos de producción. Sin embargo, usar estos metales presenta un grave problema a nivel ambiental debido a sus altos niveles de toxicidad para los organismos con los que interactúen una vez son descargados. Por tanto, se han desarrollado diversos métodos para tratar con estos metales una vez están en el agua y los métodos para analizarlos. Se realizó una búsqueda amplia y actualizada de las fuentes, efectos y toxicidad en los seres vivos, métodos de análisis y las diversas técnicas de tratamiento existentes para metales pesados. Como resultado el investigador estará más preparado al tener información actual sobre los tratamientos a tener en cuenta en la manipulación de metales pesados.

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Section: A Espectrometría De Absorción Atómicaunclassified

Contaminación del agua por metales pesados, métodos de análisis y tecnologías de remoción. Una revisión

et al. 2020

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“…Potassium concentration was determined by flame photometer method (Bowling Barnes et al 1945). The micronutrient analysis of the samples was performed using atomic absorption spectrophotometer (AAS) (Ferreira et al 2018), where the cathode lamp was set to standard wavelength. The percentage of mycorrhizal root colonization was determined by staining fine roots with trypan blue (Phillips & Hayman 1970), and estimated adopting the gridline intersect method (Giovannetti & Mosse 1980).…”

Section: Parameters Evaluatedmentioning

confidence: 99%

Influence of Microbial Consortium in the Production of China Aster and Gaillardia Seedlings

Fernandez

Nachu

Ashwin

et al. 2020

Journal of Horticultural Research

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China aster and gaillardia are flowering plants with high economic importance in floriculture. In the present investigation, response of China aster and gaillardia seedlings to inoculation with the arbuscular mycorrhizal fungus Funneliformis mosseae + the plant growth-promoting rhizobacterium Bacillus sonorensis was studied by growing in multipots (pro trays). The germination percentage and plant growth parameters: length of shoots, roots and whole seedlings, stem diameter, biovolume index, plant strength, vigor index, dry weight and nutrient uptake, were analyzed 60 days after sowing. The microbial parameters, mycorrhizal root colonization and spore count, and the population of B. sonorensis in the substrate were also determined. The results brought out that growth of inoculated seedlings was significantly improved as compared to uninoculated seedlings. Based on the plant growth and microbial parameters studied, it was concluded that inoculating the substrate in pro trays with the microbial consortium results in producing vigorously growing seedlings.

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“…The third group of atomic spectrometric techniques is based on the absorption of radiation at a specific wavelength by the atoms of analyte. In this case, the atoms can be obtained by electrothermal evaporation in a graphite furnace (GF-AAS) or in a flame (F-AAS) [25][26][27]. Beside these, other non-conventional techniques can also be used to determine metal analytes in different samples [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of a Spectrometric Method for Cd and Pb Determination in Zeolites and Safety Evaluation

Șenilă

Cadar

Miu³

2020

Molecules

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An analytical method based on microwave-assisted acid digestion and atomic absorption spectrometry with graphite furnace as atomization source was developed and validated for determining trace elements (Cd and Pb) in zeolites used as dietary supplements, for their characterization and safety evaluation. The method was checked for the main performance parameters according to the legislation requirements in the field of dietary supplements. In all cases, the obtained performance parameters were satisfactory. The selectivity study showed no significant non-spectral matrix effect. The linearity study was conducted for the calibration curves in the range of 0–10 ng mL−1 for Cd and 0–30 ng mL−1 for Pb. The obtained limits of detection (LoDs) and the limits of quantification (LoQs) were sufficiently low in order to allow Pb and Cd determination in dietary supplements. For the internal quality control, certified reference materials were analysed and good recoveries were obtained. The precision study was performed in terms of repeatability and reproducibility, considering the requirements imposed by the Commission Decision (2007/333/EC) and the method fulfilled these performance parameters. Expanded measurement uncertainties were estimated to 11% for Cd and 10% for Pb. Cd and Pb content were measured in real zeolite samples and, using these data, a safety evaluation was carried out.

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Atomic absorption spectrometry – A multi element technique

Cited by 153 publications

References 60 publications

Contaminación del agua por metales pesados, métodos de análisis y tecnologías de remoción. Una revisión

Contaminación del agua por metales pesados, métodos de análisis y tecnologías de remoción. Una revisión

Influence of Microbial Consortium in the Production of China Aster and Gaillardia Seedlings

Development and Validation of a Spectrometric Method for Cd and Pb Determination in Zeolites and Safety Evaluation

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