Multi-energy calibration applied to atomic spectrometry

Virgílio, Alex; Gonçalves, Daniel A.; McSweeney, Tina; Neto, José Anchieta Gomes; Nóbrega, Joaquim A.; Donati, George L.

doi:10.1016/j.aca.2017.06.040

Cited by 69 publications

(45 citation statements)

References 21 publications

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“…For example, samples with higher content of dissolved solids may require a higher dilution factor to improve the analytical response and not to clog in the nebulization system. 14 The calibration curve was constructed considering the signals of S1 on the x-axis, while the S2 on the y-axis, thus generating a single point on the calibration curve. For each analyte, the wavelengths that had the highest sensitivity were selected, and the signals in each solution were measured.…”

Section: Resultsmentioning

confidence: 99%

“…During the calibration process, these lines are merely discarded. [14][15][16] After the analysis of the wavelengths for each analyte, the emission lines were selected, resulting in 18 emission lines for Ca, 9 emission lines for Cu, 12 emission lines for Fe, 11 emission lines for K, 12 emission lines for Mg, 11 emission lines for Na, 14 emission lines for P, 12 emission lines for S, and 14 emission lines for Zn. Each selected emission line represents a point on the calibration curve, as was previously mentioned.…”

Section: Resultsmentioning

confidence: 99%

“…According to Virgilio et al, 14 to choose the appropriate concentration of the standard, the signal ratio of the solutions S1 and S2 must be measured, and the desirable range should be between 10 ≥ (S1 / S2) ≥ 1.1. This condition corresponds to an inclination between 0.1 and 0.9 and implies that the extremes would be avoided.…”

Section: Resultsmentioning

confidence: 99%

“…4 Another conventional method is the standard additions that gives precise results, but with an extended time of analysis and higher sample consumption. 13 The multi-energy calibration (MEC), first described by Virgilio et al, 14 consists of measuring different signals of an analyte at various wavelengths. In this situation, the analyte concentration is kept constant, and the transition energies are measured for calibration.…”

Section: Introductionmentioning

confidence: 99%

“…This calibration strategy was applied to complex liquid samples such as green tea, cola, cough medicine, soy sauce and red wine for the determination of Mn, Cu, and Cr by ICP OES. 14 Machado et al 15 used the MEC to determine the contaminants As, Ba, Cd, Cr, and Pb in inorganic fertilizer by microwave induced optical emission spectrometry (MIP OES). Babos et al 16 employed MEC for the determination of Ca, Cu, Fe, Mn and Zn in solid samples of bovine mineral supplements using laser-induced plasma atomic emission spectroscopy (LIBS).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Multi-Energy Calibration: A Practical Method for Determination of Macro and Micro Nutrients in Meat by ICP OES

Higuera

Silva

Nogueira

2019

J. Braz. Chem. Soc.

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The multi-energy calibration (MEC) was evaluated for the determination of Ca, Cu, Fe, K, Mg, Na, P, S, and Zn in meat samples by inductively coupled plasma optical spectrometry (ICP OES). This calibration method consists of using only two calibration standards and several atomic and ionic emission wavelengths with different sensitivities to determine the analyte concentration in the sample. Both calibration mixtures are prepared using the same amount of sample, which contributes to minimize matrix effects. The accuracy was evaluated using two certified reference materials, bovine liver (SRM 1577c) and bovine muscle (SRM 8414), with recoveries within 87-107% range. The method was applied for the determination of the analytes in meats of chicken, sheep loin, sheep carcass and bovine, and prove to be usable in samples with different characteristics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multi-Energy Calibration: A Practical Method for Determination of Macro and Micro Nutrients in Meat by ICP OES

Higuera

Silva

Nogueira

2019

J. Braz. Chem. Soc.

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Inductively Coupled Plasma Optical Emission Spectrometry

Hou¹,

Amais²,

Jones³

et al. 2021

Encyclopedia of Analytical Chemistry

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Inductively coupled plasma optical emission spectrometry (ICP‐OES) is a powerful tool for simultaneously determining many elements in a variety of sample matrices. With this method, liquid samples are injected into a radio frequency (RF)‐induced argon plasma using one of a variety of nebulizers or sample introduction strategies. The sample aerosol reaching the plasma is quickly dried, vaporized, and energized through collisional excitation at high temperature (up to 10 000 K). The atomic emission emanating from the plasma is viewed in either a radial or axial configuration, collected with a lens or mirror, and imaged onto the entrance slit of a wavelength selection device. Simultaneous multielement determinations are performed for up to 70 elements with the combination of a polychromator and an array detector. The analytical performance of such a system is competitive with most other inorganic analysis methods, especially with regard to sample throughput and sensitivity.

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Microwave Plasma Systems in Optical and Mass Spectrometry

Jankowski

Reszke²

2023

Encyclopedia of Analytical Chemistry

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Over the last decade, a revolutionary progress in both the instrumentation and the application of microwave plasma (MWP) systems for optical and mass spectrometry is observed. In this article, the current status of these systems is comprehensively reviewed and updated to 2022 to provide the reader with an advanced understanding of the theory, practices, and instrumentation associated with MWP‐based spectrometric techniques. Diverse MWP devices that can serve as atomizers, and radiation or ionization sources for various spectrometric techniques are all discussed and classified according to their fundamental microwave features and power coupling mode. Two basic MWP types constitute electrode‐operating capacitively coupled microwave plasmas (CMPs) and electrodeless microwave‐induced plasmas (MIPs). The recent development of the brand new devices such as microwave inductively coupled plasmas, rotating field MWPs, and microwave micro‐discharges is also discussed. In addition, so‐called tandem plasma sources that are a combination of MWP with another type of plasma are briefly commented on. An introduction to the various sampling techniques that can cope with MWPs such as hydride generation (HG), chemical vapor generation (CVG) and photochemical vapor generation (PCVG) for gaseous samples, solution nebulization for liquids, and dry aerosol generation techniques [electrothermal vaporization (ETV), spark (SA), laser ablation (LA), direct vaporization and ionization (DI), and continuous powder introduction (CPI)] for solids are presented highlighting their relative merits and demerits. Also, recent advances in sampling of nanoparticles for time‐resolved measurements and single particle analysis are mentioned. Further, a broad range of MWP‐based optical and mass spectrometric techniques is covered. Optical emission spectrometric (OES) methods based on MWPs are reviewed because a considerable amount of research is presently being performed in this field. Even when much less reported in the literature, several nonemission spectrometric techniques are also discussed. The mass spectrometry (MS) techniques including both the elemental mass spectrometry with hot MWPs and a variety of molecular MS techniques utilizing either hot or cold MWPs are discussed. Advances in sample introduction strategies, instrument optimization, calibration methods, and applications of MWP analytical spectrometry are discussed in the following sections. Due to the diversity of MWP instrumentation and related spectrometric techniques, it is impracticable to treat equally all of these issues in this survey. For this reason, the discussion of analytical performance and practical use is focused on key MWP‐based spectrometric techniques that have been employed, alone or hyphenated, using commercial instrumentation. The review of routine determination of metals and metalloids in different categories of samples is focused to cover the application of nitrogen MWP Optical Emission Spectrometer. Extended capabilities by hyphenating microwave plasma optical emission spectrometry (MWPOES) and microwave plasma mass spectrometry (MWPMS) to various well‐known separation techniques such as gas or liquid chromatography, and also size‐exclusion chromatography are discussed in brief. The application of advanced spectroscopic techniques in a wide range of environments focusing mainly, but not exclusively, on industrial and bioanalytical applications, its advantages, and limitations over other multielement instrumental techniques are discussed. Some of the areas where more developments can be expected in the future are suggested.

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Multi-energy calibration applied to atomic spectrometry

Cited by 69 publications

References 21 publications

Multi-Energy Calibration: A Practical Method for Determination of Macro and Micro Nutrients in Meat by ICP OES

Multi-Energy Calibration: A Practical Method for Determination of Macro and Micro Nutrients in Meat by ICP OES

Inductively Coupled Plasma Optical Emission Spectrometry

Microwave Plasma Systems in Optical and Mass Spectrometry

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