Development of a Method Based on Slurry Sampling for Determining Ca, Fe, and Zn in Coffee Samples by Flame Atomic Absorption Spectrometry

Trindade, Ariadna Chaves; Araújo, Sulene Alves; Amorim, Fábio Alan Carqueija; Silva, Darci Santos; Alves, Juscelia Pereira Santos; Trindade, Joabes Santos; Aguiar, Rosane Moura; Bezerra, Marcos Almeida

doi:10.1007/s12161-019-01578-5

Cited by 13 publications

(3 citation statements)

References 33 publications

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“…To determine the N content, the samples were subjected to sulfuric digestion, while to determine the P, S, K, Mg and Ca contents, the samples were subjected to nitro perchloric digestion. After digestion, the levels of N and P were determined by the semi-microkjedahl and colorimetric methods of phosphovanadate-molybdic acid, respectively 39 ; the level of K, Mg and Ca was determined by atomic absorption spectrophotometry 40 ; and the S content was determined by the turbidimetric method 41 .…”

Section: Methodsmentioning

confidence: 99%

Effect of glyphosate and P on the growth and nutrition of Coffea arabica cultivars and on weed control

Costa

Ribeiro

Moura

et al. 2021

Sci Rep

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The effect of the phosphorus (P) and glyphosate interactions on the growth and nutrition of Arabica coffee cultivars (Coffea arabica), as well as on the control of Ipomoea grandifolia and Urochloa decumbens, was evaluated. Catuaí-Amarelo/IAC-62 and Catuaí-Vermelho/IAC-144 cultivars did not show glyphosate poisoning, regardless of the soil P content. However, glyphosate reduced the growth of Catuaí-Vermelho/IAC-144. In addition, the soil P content influenced the height, leaf area and dry matter of Catuaí-Amarelo/IAC-62, and the absorption of P and Ca in both cultivars. On the other hand, glyphosate efficiently controlled U. decumbens but not I. grandifolia. Glyphosate effectiveness on I. grandifolia decreased as the soil P content increased. In addition, the soil P content and the glyphosate influenced the P content in I. grandifolia and U. decumbens plants. The soil P content influenced the growth and absorption of other nutrients by coffee plants as well as glyphosate effectiveness on weed control.

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Section: Methodsmentioning

confidence: 99%

Effect of glyphosate and P on the growth and nutrition of Coffea arabica cultivars and on weed control

Costa

Ribeiro

Moura

et al. 2021

Sci Rep

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“…Mixture design is a type of DOE applied to obtain the optimal proportions of each component in a mixture in order to find the best response (Bezerra et al, 2020). For analytical purposes, mixture design has been successfully applied for optimization of the liquid-phase composition in slurry-sampling technique (Trindade et al, 2020), digesting solution (Moreira et al, 2019) and extractor medium in ultrasound-assisted extraction procedures for subsequent elemental-determination by spectroanalytical techniques (Santos et al, 2009;Costa et al, 2020).…”

Section: Multivariate Approaches Applied To Optimization Of An Ultras...mentioning

confidence: 99%

Multivariate approaches applied to optimization of an ultrasound-assisted extraction procedure for determination of essential elements in guarana samples by ICP OES

et al. 2022

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In the present work, a simple and high-throughput analytical procedure based on ultrasound-assisted extraction with diluted acid was proposed for the determination of Ca, Mg, K, P, S, Fe, Cu and Mn in guarana samples using inductively coupled plasma optical emission spectrometry. Two multivariate approaches were employed for optimization of the extraction procedure: mixture and Doehlert designs. The best experimental conditions were established by application of a multi-response function (overall desirability). An extractor medium composed of diluted nitric acid was selected for analytes extraction. Optimized conditions for ultrasound-assisted extraction followed the temperature of 60 °C, sonication time of 10 min and power of 100% applied to the ultrasonic bath. After the analytical validation step, the proposed procedure was successfully employed for determination of essential elements in thirty-three guarana samples from the state of Bahia, Brazil. Mass fractions higher than 0.42% (m m -1 ) were found for potassium in all analyzed samples. For the other macro-elements, the mass fraction ranged from 514 mg kg -1 (magnesium) to 0.19% m m -1 (calcium). The mass fraction of micro-elements ranged from 5.1 to 91.3 mg kg -1 for cooper and iron, respectively.

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“…These methods can also be applied to investigate potential coffee adulteration, ensure food safety and track the origin of the product. [12][13][14][15][16] The analytical techniques most oen used in these investigations are ame atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry, and inductively coupled plasma mass spectrometry. Notwithstanding, these techniques require time-consuming and laborious analytical sequences that involve either sample digestion with concentrated inorganic acids under high temperatures, generating hazardous wastes, or the preparation of liquid suspensions aer a rigorous grinding step, which is prone to contamination.…”

Section: Introductionmentioning

confidence: 99%

A simple and reliable calibration method for direct analysis of ground-roasted coffee by portable XRF: an accurate analytical tool for total diet studies

Santos,

Guimarães Guilherme,

Carbone Carneiro

et al. 2024

J. Anal. At. Spectrom.

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Development of a Method Based on Slurry Sampling for Determining Ca, Fe, and Zn in Coffee Samples by Flame Atomic Absorption Spectrometry

Cited by 13 publications

References 33 publications

Effect of glyphosate and P on the growth and nutrition of Coffea arabica cultivars and on weed control

Effect of glyphosate and P on the growth and nutrition of Coffea arabica cultivars and on weed control

Multivariate approaches applied to optimization of an ultrasound-assisted extraction procedure for determination of essential elements in guarana samples by ICP OES

A simple and reliable calibration method for direct analysis of ground-roasted coffee by portable XRF: an accurate analytical tool for total diet studies

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