Recent Advances of Trace Analysis of Iron and Steel by Separation and Preconcentration Techniques

Oguma, Koichi; Uehara, Nobuo

doi:10.2355/tetsutohagane.100.818

Cited by 3 publications

(1 citation statement)

References 132 publications

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“…When this method is applied to steel analysis, separation and removal of the matrix is indispensable; and examples of the micro alloy analysis in steel have been reported wherein ICP-MS is combined with an ion-exchange separation method, 4,5) an emulsion separation method, 6) a solid phase extraction separation method, 7) or other various separation methods. 8,9) However, simplification of the sample preparation as well as further enhancement in sensitivity of ICP-AES is still required in the on-site analysis.…”

Section: Sensitivity Improvement Mechanism Of the Mistral Desolvatingmentioning

confidence: 99%

Sensitivity Improvement Mechanism of the Mistral Desolvating Sample Introduction to ICP-MS/AES and Its Application to Steel Analysis

et al. 2018

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Section: Sensitivity Improvement Mechanism Of the Mistral Desolvatingmentioning

confidence: 99%

Sensitivity Improvement Mechanism of the Mistral Desolvating Sample Introduction to ICP-MS/AES and Its Application to Steel Analysis

et al. 2018

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Examinations for Sensitivity Improvement and Applications to Steel Samples of Mistral Desolvating Sample Introduction Method Hyphenated to ICP-MS/AES

et al. 2017

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Synopsis : Mistral Desolvation (MD), a sample introduction method for Inductively Coupled Plasma (ICP)-Atomic Emission Spectroscopy (AES) and Mass Spectrometry (MS), provides sensitivity enhancement over 5 times compared to conventional sample introduction method (concentric nebulizer and Spray chamber). Some groups have been proposed different mechanisms of sensitivity enhancement by MD, e.g. inhibition of poly-atomic ion generation derived from solvent, influence of the change of plasma condition, and improvement of sample transportation efficiency in plasma. However, uniform understanding has not been obtained. In this paper, we have identified the dominant factor of a sensitivity enhancement by MD and examined application to chemical analysis of steel samples. It is found that the MD method provides decrease of 100-250 K plasma temperature, which leads to sensitivity loss. On the other hand, sample transportation efficiency improves by a factor of 4.7 times by virtue of an increase in the sum of small droplets less than 1.0 μm, which is comparable to fivefold sensitivity enhancement. Thus, we concluded that the dominant factor of sensitivity enhancement achieved by the MD method is improvement of sample transportation efficiency with decreasing droplet size. Besides, the standard steel samples have analyzed by MD-ICP-AES. It is found that almost tenth amount of sample consumption and almost 3-fold sensitivity can be achieved, the analyzed value corresponds exactly to certificated value. Therefore, this method can be expected to apply to chemical analysis of micro-alloy in steels.

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Application of Iron High-selectivity Solid Phase Extraction Resin to Simultaneous Determination of Trace Elements in High-purity Iron by ICP-MS

Tsukahara

Nakashima

2021

Tetsu-to-Hagane

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In this study, we developed a separation method to extract iron from steel solutions using a solid phase extraction resin to determine the composition of trace elements in high-purity steel, with the aid of inductively coupled plasma mass spectrometry (ICP-MS). The acidic solution of steel was passed through the resin and amounts of the trace elements were determined by analyzing the eluate. To obtain optimum analytical conditions, maximum amount of iron was extracted into the resin and the effects of the acid species used to decompose the steel, and their concentrations were examined. Methods to reuse the resin were also investigated. Under optimal conditions, the quantities of many elements such as Mn,

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Recent Advances of Trace Analysis of Iron and Steel by Separation and Preconcentration Techniques

Cited by 3 publications

References 132 publications

Sensitivity Improvement Mechanism of the Mistral Desolvating Sample Introduction to ICP-MS/AES and Its Application to Steel Analysis

Sensitivity Improvement Mechanism of the Mistral Desolvating Sample Introduction to ICP-MS/AES and Its Application to Steel Analysis

Examinations for Sensitivity Improvement and Applications to Steel Samples of Mistral Desolvating Sample Introduction Method Hyphenated to ICP-MS/AES

Application of Iron High-selectivity Solid Phase Extraction Resin to Simultaneous Determination of Trace Elements in High-purity Iron by ICP-MS

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