Different Lubricating Oil Treatments for the Determination of Cu, Cr, Fe, Ni, Sb, Pb, and Zn by HR-CS FAAS

Filho, Volnei Resta Amorim; Neto, José Anchieta Gomes

doi:10.1080/00032710802122115

Cited by 24 publications

(15 citation statements)

References 13 publications

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“…These two last strategies can be used to improve sensitivity (Amorim Filho & Gomes Neto, 2008). Additionally, in comparison with conventional atomic absorption spectrometry, the technique has other inherent advantages such as random access to all wavelengths in the range from 189 nm to 900 nm, and effective and flexible background correction by means of mathematical algorithms (Huang, Becker-Ross, Florek, Heitmann, & Okruss, 2006).…”

Section: Introductionmentioning

confidence: 99%

Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparation

et al. 2011

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The aim of this work was to evaluate the microemulsification as sample preparation procedure for determination of Cu, Fe, Ni and Zn in vegetable oils samples by High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS). Microemulsions were prepared by mixing samples with propan-1-ol and aqueous acid solution, which allowed the use of inorganic aqueous standards for the calibration. To a sample mass of 0.5g, 100μL of hydrochloric acid and propan-1-ol were added and the resulting mixture diluted to a final volume of 10mL. The sample was manually shaken resulting in a visually homogeneous system. The main lines were selected for all studied metals and the detection limits (3σ, n=10) were 0.12, 0.62, 0.58 and 0.12mgkg(-1) for Cu, Fe, Ni and Zn, respectively. The relative standard deviation (RSD) ranged from 5% to 11 % in samples spiked with 0.25 and 1.5μgmL(-1) of each metal, respectively. Recoveries varied from 89% to 102%. The proposed method was applied to the determination of Cu, Fe, Ni and Zn in soybean, olive and sunflower oils.

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Section: Introductionmentioning

confidence: 99%

Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparation

et al. 2011

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“…The wavelength-integrated absorbance (WIA) and the sum of absorbances of molecular lines were used to enhance the sensitivity and determine B, P, and S in 12 medicinal plants [18]. Other applications of HR-CS FAAS are the analysis of P and K in liquid fertilizers [19], the determination of Cu, Pb, Cd, and Mn in sediments [20], the sequential determination of Sb and Pb in pewter alloys [21], and the analysis of Cu, Cr, Fe, Ni, Pb, Sb, Zn [22], Al, Ba, Mo, Si, and V [23] in lubricating oils after the use of different sample pretreatment procedures. Raposo et al [24] evaluated the side pixel registration approach and the use of alternate lines of Fe for sequential determination of Cu, Fe, Mn, and Zn in soil extracts (diethylenetriaminepentaacetic acid extracting solution).…”

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confidence: 99%

Use of High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS) for Sequential Multi-Element Determination of Metals in Seawater and Wastewater Samples

et al. 2015

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The objective of this work is to develop a method for the determination of metals in saline matrices using highresolution continuum source fl ame atomic absorption spectrometry (HR-CS FAAS). Module SFS 6 for sample injection was used in the manual mode, and fl ame operating conditions were selected. The main absorption lines were used for all the elements, and the number of selected analytical pixels were 5 (CP±2) for Cd, Cu, Fe, Ni, Pb and Zn, and 3 pixels for Mn (CP±1). Samples were acidifi ed (0.5% (v/v) nitric acid), and the standard addition method was used for the sequential determination of the analytes in diluted samples (1:2). The method showed good precision (RSD(%) < 4%, except for Pb (6.5%)) and good recoveries. Accuracy was checked after the analysis of an SPS-WW2 wastewater reference material diluted with synthetic seawater (dilution 1:2), showing a good agreement between certifi ed and experimental results. Keywords: high-resolution continuum source atomic absorption spectrometry, determination of metals in saline matrices, water analysis, multi-element sequential analysis, SPS-WW2.Introduction. One of the most obvious advantages of high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) is the use of a single continuum source (a xenon short-arc lamp) for sequential multi-element analysis in the entire spectral range (190-900 nm) [1]. The increased signal-to-noise ratio due to the high intensity of the radiation source brings about an improvement of the photometric precision and the detection limits. Many secondary lines can also be used for analytical purposes, and elements (nonmetals: P, S, halogens, and some metalloids) [2, 3] for which no radiation source has been available may be determined [4]. When using fl ame at omizers, steady-state signals are obtained; moreover, wavelengths and fl ame conditions can be changed quickly; thus, it is possible to perform multi-element determination under optimum conditions in a single run [5]. At the same time, t he main advantage of HR-CS AAS using graphite furnaces is the direct analysis of complex samples [6]. All these instruments combine the use of the continuum source, a highresolution Echelle monochromator, and a charge coupled detector (CCD). The absorbance depends not only on the absorption coeffi cient, the length of the absorbing layer, and the number of absorbing atoms but also on the spectral interval over which the signal is recorded [7]. The spectral environment of the analytical line becomes available, and background correction and elimination of interferences in complex matrices is easier than using a line source [8]. Reference spectra, e.g., of a molecular absorption with rotational fi ne structure can be recorded and subtracted.Flame HRCSAAS (HR-CS FAAS) has been used for multi-element determination in different types of matrices. It has been used for the analysis of food and beverages (e.g., mineral waters [9], coffee samples [10], Brazilian wines [11]). Harmanescu et al. [12] determined the concentrations of Na, K,...

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“…On the other hand, high metal concentration has been related with the friction and corrosion of the mechanical components of engines. Amorim Filho and Gomes Neto [34] studied three sample preparation procedures: microwave-assisted acid decomposition, direct dilution in kerosene, and oil-in-water emulsion for metal determination by HR-CS-FAAS. Considering direct dilution, it was evaluated the kerosene/light mineral oil ratio to prepare standard solutions since sample and light mineral oil present different viscosities and it can cause accuracy errors.…”

Section: Fuelsmentioning

confidence: 99%

Old and New Flavors of Flame (Furnace) Atomic Absorption Spectrometry

Dionísio

Jesus

Amais

et al. 2011

International Journal of Spectroscopy

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This paper presents some recent applications of Flame Atomic Absorption Spectrometry (FAAS) to different matrices and samples. The time window selected was from 2006 up to March, 2011, and several aspects related to food, biological fluids, environmental, and technological samples analyses were reported and discussed. In addition, the chemometrics application for FAAS methods development was also taken into account, as well as the use of metal tube atomizers in air/acetylene flame. Preconcentration methods coupled to FAAS were discussed, and several approaches related to speciation, flotation, ionic liquids, among others were discussed. This paper can be interesting for researchers and FAAS users in order to see the state of the art of this technique.

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Different Lubricating Oil Treatments for the Determination of Cu, Cr, Fe, Ni, Sb, Pb, and Zn by HR-CS FAAS

Cited by 24 publications

References 13 publications

Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparation

Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparation

Use of High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS) for Sequential Multi-Element Determination of Metals in Seawater and Wastewater Samples

Old and New Flavors of Flame (Furnace) Atomic Absorption Spectrometry

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