Method development for the determination of chromium and thallium in fertilizer samples using graphite furnace atomic absorption spectrometry and direct solid sample analysis

Borges, Aline Rocha; François, Luciane L.; Becker, Emilene M.; Vale, Maria Goreti R.; Welz, Bernhard

doi:10.1016/j.microc.2014.11.007

Cited by 39 publications

(8 citation statements)

References 17 publications

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“…In graphite furnace atomic absorption spectrometry determinations, the detectability is called "analytical sensitivity" and this parameter is expressed in terms of mass, referred to as "characteristic mass" (m o ). This value corresponds to the mass of the analyte responsible for absorbing 1% of the radiation, in picograms (pg) [25,30,31]. The characteristic mass of Chromium in the sports supplement samples ranged from 2.7 to 2.8pg, which is in agreement with the value of 3pg reported for longitudinally heated atomizers.…”

Section: R E S U L T S a N D Discussionsupporting

confidence: 82%

“…The variance in these results was evaluated through the F test, being comparable (F calculated 1.55 and F critical 3.44). The averages were compared through paired Student's t-test, t calculated of 9.03 and t critical Although the use of chemical modifiers may be unnecessary for the determination of Chromium due to its refractory behavior, the use of relatively low pyrolysis temperatures can influence the elimination of complex matrices [24][25][26]. The use of modifiers such as magnesium nitrate, Mg(NO 3 ) 2 , is reported in the literature for Chromium determination in different types of matrices, allowing the thermal stabilization of the analyte during the pyrolysis step without sensitivity losses, thus justifying its use [25,26].…”

Section: R E S U L T S a N D Discussionmentioning

confidence: 99%

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Evaluation of Chromium and Manganese levels in sports supplements using graphite furnace atomic absorption spectrometry

et al. 2020

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Objective In this paper, we studied three different types of ordinary sports supplements containing whey protein: whey protein-based ones, hypercaloric ones, and protein bars. Methods A sample preparation procedure was studied employing microwave-assisted wet digestion in order to determine the Chromium and Manganese levels by graphite furnace atomic absorption spectrometry. Results The developed methods have presented good accuracy (recoveries in the range of 90% to 109%) and precision (Relative standard deviation <8%). Although an adequate detectability was obtained (50ng g-1 for Manganese and 65ng g-1 for Chromium), the sample preparation method was also adequate to inductively coupled plasma mass spectrometry analysis. The method was applied to 26 commercial samples, in which the Chromium concentrations were in the range between 0.22 and 1.0μg g-1 and the Manganese concentrations varied from 2.0 to 37μg g-1. Conclusion The results obtained by atomic absorption for both analytes were in agreement with those obtained by mass spectrometry. In addition, some samples presented concentrations of Chromium above the recommended daily intake and, as a result, we used the X-ray powder diffraction technique as an analytical tool to evaluate the oxidation state of Chromium in such samples.

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Section: R E S U L T S a N D Discussionsupporting

confidence: 82%

Section: R E S U L T S a N D Discussionmentioning

confidence: 99%

Evaluation of Chromium and Manganese levels in sports supplements using graphite furnace atomic absorption spectrometry

et al. 2020

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“…In this context, the determination of minerals in fertilizers becomes necessary, and for this purpose, several techniques have been reported in the literature [1,2,5]. Some techniques for the determination of heavy metals are based on Graphite Furnace atomic absorption spectroscopy (GF-AAS), Continuous Source Flame Absorption Spectroscopy (HR-CS-FAAS) [1,[6][7][8][9], or Cold Vapor Atomic Absorption Spectroscopy (CV-AAS) for Hg [5]. In addition, methods have been developed to determine nutrients in fertilizers by LIBS [10,11], or by total X-ray fluorescence (TXRF) techniques [12].…”

Section: Introductionmentioning

confidence: 99%

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Viso

Zachariadis

2018

Separations

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Simultaneous determination of phosphorus and boron in fertilizers was performed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Three different samples were analyzed, of which two were inorganic and one was of organic composition. Analysis of the samples was performed after heated acidic digestion to completely dissolve them, using two different acid mixtures. A solution of HCl + HNO 3 was used to digest the inorganic fertilizers, and a solution of H 2 SO 4 + HNO 3 for the organic fertilizer. The spectral emission lines used were 213.617 nm and 214.917 nm for P and 249.772 nm, 249.677 nm and 208.957 nm for B. The detection and quantification limits for P were between 10-20 mg/kg and 40-80 mg/kg respectively, while for B they ranged between 10-30 mg/kg and 40-100 mg/kg respectively. The repeatability of the technique was found to be within the range 0.9-17.0% for P and 1.7-23.4% for B, expressed as relative standard deviation (RSD). The concentrations found by the proposed method are in good agreement with those reported on their package labels.

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“…The measurements of elements with GF-AAS and INAA cannot be done simultaneously, where filters that have been analyzed by GF-AAS cannot be analyzed with INAA, and vice versa. Half of the samples in each region were analyzed using GF-AAS and the other half was analyzed with INAA, each sample was paired based on the closest point (Borges et al 2015). The urine sampling was carried out by post-shift specimen, wherein the sample was taken at the end of the aspiration dust measurement.…”

Section: Methodsmentioning

confidence: 99%

Lead Exposure in Trader Communities in Industrial Area of the Battery Recycling Plant: Tangerang, Indonesia

Oginawati¹,

Sidhi²,

Susetyo³

2020

J. Ecol. Eng.

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The aim of this study was to look at the risk of community around the battery recycling plant in terms of the exposure to lead dust. The number of respondents amounted to 60 people from an industrial area and a residential area. The sample of the industrial area included 30 respondents with a composition of 15 men and 15 women. The same number of respondents was also examined in the residential area as a control area, located 5 km from the industrial area. Respirable dust was measured using a personal dust sampler, the concentration of lead in dust was measured using GF-AAS, while as a biomarker of exposure, the lead content in urine was measured using GF-AAS. The average values for respirable lead in industrial and residential areas are 0.92 μg/m 3 and 0.92-1.34 μg/m 3. The analysis of the lead content in urine for the industrial and residential areas produced an average value of 119 ppb and 123 ppb. The average value of HI for the lead exposure on the industrial and residential areas are in danger (HI> 1) which is 3.6 ± 1.94 and 2.18 ± 1.49. The OR values for the respondents in the industrial area compared to the residential areas amounting to 1.17 for the category of HI lead exposure and 1.22 for the category of lead in urine.

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Method development for the determination of chromium and thallium in fertilizer samples using graphite furnace atomic absorption spectrometry and direct solid sample analysis

Cited by 39 publications

References 17 publications

Evaluation of Chromium and Manganese levels in sports supplements using graphite furnace atomic absorption spectrometry

Evaluation of Chromium and Manganese levels in sports supplements using graphite furnace atomic absorption spectrometry

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Lead Exposure in Trader Communities in Industrial Area of the Battery Recycling Plant: Tangerang, Indonesia

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