Quantitative elemental analysis of nickel alloys using calibration-based laser-induced breakdown spectroscopy

Gupta, Gaurav; Suri, B. M.; Verma, Amit Kumar; Sundararaman, M.; Unnikrishnan, V. K.; Alti, Kamlesh; Kartha, V. B.; Chidangil, Santhosh

doi:10.1016/j.jallcom.2010.12.189

Cited by 33 publications

(16 citation statements)

References 16 publications

(33 reference statements)

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“…The selection of resonance atomic lines is not generally suitable for making calibration lines due to a self-absorption effect: [16][17][18][19][20] emission related to a resonance transition would be predominantly absorbed by the same kind of atom in the ground state, resulting in a decrease in the observed emission intensity. However, under the experimental conditions described above, we had no choice but to use the two resonance lines of copper because of relatively low concentrations of copper in Fe-Cu SRMs as well as severe spectral interferences with a number of iron atomic/ionic emission lines; therefore, emission lines of iron that have a similar excited energy were considered to be favorable for the internal standard method.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of the Calibration Curves of Copper for the Rapid Sorting of Steel Scrap by Means of Laser-induced Breakdown Spectroscopy under Ambient Air Atmospheres

Kashiwakura

Wagatsuma

2013

ANAL. SCI.

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Section: Resultsmentioning

confidence: 99%

Characteristics of the Calibration Curves of Copper for the Rapid Sorting of Steel Scrap by Means of Laser-induced Breakdown Spectroscopy under Ambient Air Atmospheres

Kashiwakura

Wagatsuma

2013

ANAL. SCI.

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“…The spectral lines of Mn I and Si I used for analysis are shown in the figure. A calibration curve for Mn present in the samples is prepared from the LIBS spectra of three certified Mn-doped glass samples (samples 1,3 and 4), employing the internal standardization method 28 by considering the analyte Mn atomic line (482.35 nm) and the reference Si atomic line (288.16 nm) as shown in Figure 10.…”

Section: Quantitative Analysis Of Mn In Glass Samples Using Calibrmentioning

confidence: 99%

Homogeneity testing and quantitative analysis of manganese (Mn) in vitrified Mn-doped glasses by laser-induced breakdown spectroscopy (LIBS)

et al. 2014

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Laser-induced breakdown spectroscopy (LIBS), an atomic emission spectroscopy method, has rapidly grown as one of the best elemental analysis techniques over the past two decades. Homogeneity testing and quantitative analysis of manganese (Mn) in manganese-doped glasses have been carried out using an optimized LIBS system employing a nanosecond ultraviolet Nd:YAG laser as the source of excitation. The glass samples have been prepared using conventional vitrification methods. The laser pulse irradiance on the surface of the glass samples placed in air at atmospheric pressure was about 1.7×109 W/cm2. The spatially integrated plasma emission was collected and imaged on to the spectrograph slit using an optical-fiber-based collection system. Homogeneity was checked by recording LIBS spectra from different sites on the sample surface and analyzing the elemental emission intensities for concentration determination. Validation of the observed LIBS results was done by comparison with scanning electron microscope- energy dispersive X-ray spectroscopy (SEM-EDX) surface elemental mapping. The analytical performance of the LIBS system has been evaluated through the correlation of the LIBS determined concentrations of Mn with its certified values. The results are found to be in very good agreement with the certified concentrations.

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“…14,15) The self-absorption of an analytical line frequently causes reversal in the emission intensity, which leads to a calibration curve having a significant curvature; as a result, the accurate determination is hardly carried out. [16][17][18][19][20][21][22][23] Furthermore, it is generally difficult to determine an analyte element at minor concentration ranges, because the plasma is pulsating and thus gives large fluctuations in the emission intensity.…”

Section: Introductionmentioning

confidence: 99%

Rapid Determination of Small Amounts of Copper as a Tramp Element in Steel Scraps by Laser Induced Plasma Spectrometry

Zhang

Wagatsuma

2013

ISIJ Int.

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A quantitative analysis of copper in steel scraps was investigated by using laser induced plasma spectrometry. A Nd:YAG laser at a wavelength of 532 nm was employed to generate the plasma under reduced argon atmospheres. Several experimental parameters, such as an argon pressure, a gate width and a delay time of the spectrometer were optimized to obtain a calibration curve having higher sensitivity and better linearity. Several line pairs of copper and iron were also investigated as a candidate of the analytical line for measuring the intensity ratio converted into the atomic ratio of copper to iron in steel scraps. The Cu I 324.754-nm line was more suitable for the analytical line than the Cu I 327.396-nm line due to its higher intensity. Line pairs of Cu I 324.754 nm to several iron lines, Fe I 381.583 nm, Fe I 382.043 nm, and Fe II 276.750 nm, were measured to compare criteria of their calibration curves, such as a slope, an intercept and a regression coefficient. As a result, it was recommended that a calibration curve for the intensity ratio of Cu I 324.754 nm/Fe II 276.750 nm could be employed in the actual application because it had a regression coefficient of almost unity over a concentration range up to 1.0 mass% Cu in standard reference samples of iron-copper binary alloy. The limit of detection, based on three times the standard deviation of the emission intensity at 324.75 nm in a pure iron sample, was estimated to be the Cu/Fe atomic ratio of 0.00059.

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Quantitative elemental analysis of nickel alloys using calibration-based laser-induced breakdown spectroscopy

Cited by 33 publications

References 16 publications

Characteristics of the Calibration Curves of Copper for the Rapid Sorting of Steel Scrap by Means of Laser-induced Breakdown Spectroscopy under Ambient Air Atmospheres

Characteristics of the Calibration Curves of Copper for the Rapid Sorting of Steel Scrap by Means of Laser-induced Breakdown Spectroscopy under Ambient Air Atmospheres

Homogeneity testing and quantitative analysis of manganese (Mn) in vitrified Mn-doped glasses by laser-induced breakdown spectroscopy (LIBS)

Rapid Determination of Small Amounts of Copper as a Tramp Element in Steel Scraps by Laser Induced Plasma Spectrometry

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