INTER-LABORATORY NOTE X-ray fluorescence analysis of iron(III), potassium and sulfur oxides in cements with a hyperbolic addition–dilution model and using a single multicomponent standard

Reig, F. Bosch; Martínez, Vladimir; Gimeno-Adelantado, José Vicente; Ramos, Silvia; Marco, Dolores Julia Yusá; Mossi, F. Bosch

doi:10.1039/a800582f

Cited by 11 publications

(4 citation statements)

References 8 publications

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“…1-3) were used for the model parameters calculation. Figure 1 shows that copper interferes with the determination of iron and that this interference is not constant but increases as the copper concentration increases, which means that the slope of the calibration plot varies over the copper concentration range [24]. This was shown later when a calibration set was performed (Fig.…”

Section: Methodsmentioning

confidence: 93%

A calibration model to overcome non-spectral interferences in flame atomic absorption spectrometry

1996

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Abstract.A calibration model has been developed in order to overcome matrix effects in atomic absorption measurements. The model uses two independent variables for analyte quantification (the amount of the sample and the amount of analyte added). The dependent variable is the absorbance measured. The method also allows matrix interferences to be controlled without prior knowledge of matrix composition. The method is applied to iron determination by FAAS in the presence of large amounts of copper. Direct calibration and standard addition are also performed in order to compare them with the new empirical model. Results show that the error in iron determination could be -42% when direct calibration is applied and + 10% when the standard addition method is used, whereas the proposed model decreases the error to -20%.

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Section: Methodsmentioning

confidence: 93%

A calibration model to overcome non-spectral interferences in flame atomic absorption spectrometry

1996

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“…Other industrial applications included those by Havrilla,329 who used dried spot methodology followed by X-ray micro-solution. The development of a mathematical addition-dilution model for matrix correction was reported by Reig et al 319 optimize detection limits and accuracy in the determination of lead in tibia from K or L X-ray lines. Niemela and Grodzins338 Powdered scheelite samples (−200 mesh) were decomposed with 4% m/v oxalic acid at 100 °C over 1 h with constant reported initial developments of a faster, more accurate measurement system for the in vivo measurement of Pb in stirring and tungsten was determined in samples poured into liquid cups.…”

Section: Environmentalmentioning

confidence: 99%

Atomic Spectrometry Update—X-ray Fluorescence Spectrometry

Ellis¹,

Holmes²,

Kregsamer³

et al. 1998

J. Anal. At. Spectrom.

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“…The same method was applied to the analysis of industrial m aterials of a more complex composition such as Portland cement in the form of pellets. 12 Recently the same authors have developed the substitution-dilution method, 13 which uses a m ulti-elemental standard to determine several elements in the same sample. The method consists of maintaining a xed quantity of diluent-melt and varying the quantities of unknown, which are successively substituted with identical quantities of standard de ned by the substitution factor (h).…”

Section: Introductionmentioning

confidence: 99%

Correction of Matrix Effect in Multielemental Quantitative Analysis by X-Ray Fluorescence Spectroscopy Using the Linear Behavior in the Analytical Range of the Substitution-Dilution Method

et al. 2002

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This paper is an analytical study of the possibility of applying the linear range of the substitution-dilution method to correct the matrix effect in quantitative analysis by X-ray fluorescence (XRF) spectroscopy. The analytical range is obtained from a series of samples prepared in the form of glass discs by substituting the unknown sample with a standard sample (substitution factor, h) including a diluent-melt. In general, the substitution-dilution method is hyperbolic in character and therefore the diluent is required to ensure linear behavior between If vs. h in the experimental range. The linear range is located between the concentrations of standard and unknown for each element analyzed. This linear model makes it possible to correct the matrix effect in quantitative analysis by XRF using a single multi-elemental standard for different types of samples with a complex matrix, such as geologicals and cements. The results found for Si, Ti, Al, Fe, Mn, Ca, K, and P in soil and sediment samples and Si, Fe, Al, Ca, and K in cements (white and gray) are statistically satisfactory. Thus, the mean relative standard deviation calculated for all analytes in each sample was: ±4.0% and ±5.0% in soils; ±5.0% in sediments; and ±6.0% or ±3.0% in cements, white and gray, respectively.

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INTER-LABORATORY NOTE X-ray fluorescence analysis of iron(III), potassium and sulfur oxides in cements with a hyperbolic addition–dilution model and using a single multicomponent standard

Cited by 11 publications

References 8 publications

A calibration model to overcome non-spectral interferences in flame atomic absorption spectrometry

A calibration model to overcome non-spectral interferences in flame atomic absorption spectrometry

Atomic Spectrometry Update—X-ray Fluorescence Spectrometry

Correction of Matrix Effect in Multielemental Quantitative Analysis by X-Ray Fluorescence Spectroscopy Using the Linear Behavior in the Analytical Range of the Substitution-Dilution Method

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