scholarly journals Validation and Comparison of Two Calibration Methods for the Measurement of Stable Iodine in the Urinary Matrix by ICP-MS: Standard Addition vs. External Calibration

2017 ◽  
Vol 08 (04) ◽  
pp. 245-263 ◽  
Author(s):  
Géraldine Landon ◽  
Céline Bouvier-Capely ◽  
Alexandre Legrand ◽  
Thibaud Sontag ◽  
Grégory Finance ◽  
...  
Keyword(s):  
Standard Addition ◽  
External Calibration ◽  
Icp Ms ◽  
Calibration Methods ◽  
Stable Iodine

Quantification of trace level rare earth elements in Al matrices by ICP-MS

2019 ◽  
Vol 107 (3) ◽  
pp. 215-220
Author(s):  
Brijlesh Kumar Nagar ◽  
Sadhan Bijoy Deb ◽  
Manoj Kumar Saxena ◽  
Bhupendra Singh Tomar
Keyword(s):  
Rare Earth ◽  
Inductively Coupled Plasma ◽  
Microwave Digestion ◽  
Standard Addition ◽  
Analytical Methodology ◽  
Selective Precipitation ◽  
Inductively Coupled ◽  
Matrix Separation ◽  
Icp Ms ◽  
The Matrix

Abstract A method has been developed for quantification of trace rare earth (Ce, Dy, Er, Eu, Gd, Ho, La, Nd, Pr, Sm, Tb and Yb) impurities in alumina and aluminum by inductively coupled plasma mass spectrometry (ICP-MS) after matrix separation. The matrix separation was achieved by selective precipitation of trace elements. Due to its refractory nature a microwave digestion method was developed and optimized for the quantitative dissolution of Al2O3. The analytical methodology was validated by recovery studies with standard addition as well as with an independent γ-spectrometry technique using 152,154Eu tracers. The observed recovery in the synthetic samples was in the range of 93–100% with precision within 6.1–11.6 (%RSD), while the same in the case of radio tracer technique were found to be >98% and <2% (RSD), respectively. The method detection limit was found within 0.5–8.3 μg kg−1, respectively. The procedure is simple, organic waste free and suitable for routine analysis.

scholarly journals A Preliminary Study of Three-Point Onboard External Calibration for Tracking Radiometric Stability and Accuracy

2019 ◽  
Vol 11 (23) ◽  
pp. 2790 ◽  
Author(s):  
Mustafa Aksoy ◽  
Paul E. Racette
Keyword(s):  
Data Processing ◽  
Temporal Stability ◽  
Measurement Data ◽  
Absolute Calibration ◽  
Calibration Error ◽  
Validation Data ◽  
External Calibration ◽  
Calibration Methods ◽  
Preliminary Study ◽  
The Impact

Absolute calibration of radiometers is usually implemented onboard using one hot and one cold external calibration targets. However, two-point calibration methods are unable to differentiate calibration drifts and associated errors from fluctuations in receiver gain and offset. Furthermore, they are inadequate to characterize temporal calibration stability of radiometers. In this paper, a preliminary study with linear radiometer systems has been presented to show that onboard external three-point calibration offers the means to quantify calibration drifts in the radiometer systems, and characterize associated errors as well as temporal stability in Earth and space measurements. Radiometers with three external calibration reference targets operating two data processing paths: i.e., (1) measurement path and (2) calibration validation path have been introduced. In the calibration validation data processing path, measurements of one known calibration target is calibrated using the other two calibration references, and temporal calibration stability and possible calibration temperature drifts are analyzed. In the measurement data processing path, the impact of the calibration drifts on Earth and space measurements is quantified and bounded by an upper limit. This two-path analysis is performed through calibration error analysis (CEA) diagrams introduced in this paper.

External calibration methods for geosynchronous ultraviolet-visible hyperspectral instrument

2021 ◽  
Vol 29 (3) ◽  
pp. 484-492
Author(s):  
Cheng-guang CUI ◽  
◽  
Ling LI ◽  
Yun-fei LI ◽  
Yong-xiang GUO ◽  
...  
Keyword(s):  
External Calibration ◽  
Calibration Methods

Precise wavelength determination of the 4s24p 2P3/2 - 2P1/2 transition in Mo11+ and Ru13+ ions

2021 ◽  
Author(s):  
Yajing Li ◽  
Yintao Wang ◽  
Junyu Fan ◽  
Ran Si ◽  
Jiguang Li ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Dipole Transition ◽  
Experimental Uncertainty ◽  
External Calibration ◽  
Direct Observations ◽  
Electron Beam Ion Trap ◽  
Calibration Methods ◽  
Highly Charged Ion

Abstract The 4s24p 2P3/2 – 2P1/2 magnetic dipole transition in Ga-like ions is interested in developing of high precise highly charged ion clock [Phys. Rev. A, 99, 02213(2019)]. In this work, we present direct observations of the transition in Mo11+ and Ru13+ ions at an electron beam ion trap. Internal and external calibration methods are used for determining the wavelength of the Mo11+ and Ru13+ lines, respectively. Both measurements reach precision levels of a few ppm. Compared with the available values, the current results significantly improve the experimental uncertainty.

Accuracy of stable Mg and Ca isotope data obtained by MC-ICP-MS using the standard addition method

2008 ◽  
Vol 257 (1-2) ◽  
pp. 65-75 ◽  
Author(s):  
Edward T. Tipper ◽  
Pascale Louvat ◽  
Françoise Capmas ◽  
Albert Galy ◽  
Jérôme Gaillardet
Keyword(s):  
Standard Addition ◽  
Standard Addition Method ◽  
Addition Method ◽  
Isotope Data ◽  
Icp Ms

scholarly journals Compensation of inorganic acid interferences in ICP-OES and ICP-MS using a Flow Blurring® multinebulizer

2014 ◽  
Vol 29 (7) ◽  
pp. 1218-1227 ◽  
Author(s):  
Miguel Ángel Aguirre ◽  
Lucimar L. Fialho ◽  
Joaquim A. Nóbrega ◽  
Montserrat Hidalgo ◽  
Antonio Canals
Keyword(s):  
Standard Addition ◽  
Icp Oes ◽  
Inorganic Acid ◽  
Icp Ms ◽  
On Line ◽  
Line Standard

A multinebulizer based on the Flow Blurring® nebulization principle for the analysis of acid digested samples using on-line standard addition calibration in ICP-OES and ICP-MS.

scholarly journals Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS

Minerals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 55 ◽  
Author(s):  
Veronica C. Bradley ◽  
Benjamin T. Manard ◽  
Benjamin D. Roach ◽  
Shalina C. Metzger ◽  
Kayron T. Rogers ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Inductively Coupled Plasma ◽  
High Performance ◽  
Isotope Dilution Mass Spectrometry ◽  
Standard Addition ◽  
Element Determination ◽  
Uranium Ore ◽  
Icp Ms

The determination of trace elements, particularly rare earth elements, in uranium ore concentrates (UOCs) is important as the pattern can be indictive ore characteristics. Presented here is a methodology for accurately quantifying rare earth elements (REE) in UOCs. To improve the measurement uncertainty, isotope dilution mass spectrometry (IDMS) was utilized over other quantification techniques such as external calibration or standard addition. The isotopic determinations were measured by inductively coupled plasma-mass spectrometry (ICP-MS). To obtain high-fidelity isotopic measurements, separation of the REE from the uranium matrix was achieved by high-performance ion chromatography (HPIC), reducing the isobaric interferences. After separation, the target analytes were analyzed in two different modalities. For high precision analysis, the separated analytes were collected and measured by ICP-MS in an “offline” fashion. For a rapid approach, the separated analytes were sent directly into an ICP-MS for “online” analysis. These methods have been demonstrated to accurately quantify the REE content in a well-characterized UOC sample.

scholarly journals Results accuracy of the simultaneous Na, K, Li, Rb and Cs determination in geochemical objects using the flame atomic emission spectrometry

2021 ◽  
Vol 25 (1) ◽  
pp. 6-19
Author(s):  
Anna A. Zak ◽  
◽  
Elena V. Shabanova ◽  
Irina Е. Vasil’eva ◽  
◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Alkali Metals ◽  
Standard Addition ◽  
Atomic Emission ◽  
Major And Trace Elements ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Icp Ms ◽  
Geochemical Studies

One of the most important challenges in the simultaneous determination of the five alkaline elements is that their abundance differs thousands of times in natural samples. Therefore, usually the analysis of the same samples is performed using several analytical methods or techniques. An atomic emission spectrometry is the most selective method for the determination of alkaline elements in wide ranges of their contents. The reliable and correct simultaneous determination of major and trace elements contents by one method is economically attractive for classifying rocks, reconstructing the conditions of their formation, etc. The atomic emission spectrometry technique of the simultaneous determination of the five alkaline elements was developed with the use of the modern equipment. The accuracy and trueness of the developed technique results were evaluated in the current study. The technique features were the preparation and the analysis of the high-salt solutions of the geochemical samples, and the use of a low-temperature propane-butane flame and multichannel photoelectric recording of the spectra for the simultaneous determination of alkali metals contents. A specific data processing ensured accounting for the spectral background and minimizing the interferences when calibrating by CRMs with various compositions and genesis. The determined concentrations ranges of alkaline elements in natural and man-made environments had been expanded by improving the detection limits and using several analytical lines of Na, K and Rb with different spectral features. FAES results were compared with the results of XRF, ICP-MS, the standard addition and dilution methods, and its accuracy and trueness were found to be satisfactory for the requirements of geological and geochemical studies.

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