Issue 8, 2013

Determination of boron in high-temperature alloy steel using non-linear inter-element correction and microwave plasma-atomic emission spectrometry

Abstract

The determination of B in high-temperature alloy steel using microwave plasma-atomic emission spectrometry (MP-AES) is presented. This instrumental emission technique was developed recently using 2.45 GHz microwaves to generate atmospheric pressure N2-plasma, self-sustained inside a modified inductively coupled plasma (ICP) torch. The sample introduction to the MP is pneumatic using a conventional concentric nebulizer and a cyclonic spray chamber system. The emission line detection is sequential using a Czerny-Turner monochromator and charge-coupled device (CCD) system. Boron in steel, generally considered an analytically difficult element in a highly impacted matrix, was determined using HNO3–HCl digested steel solutions and 249.773 nm B emission line. Iron spectral interference on this B emission line was corrected using a non-linear inter-element correction (NL-IEC) method. Steel matrix effects on B recovery were attenuated using the method of standard addition. The amount of B in NBS 348a steel is found to be 58 ± 1 mg kg−1 and the certified amount of B is 55 ± 4 mg kg−1.

Graphical abstract: Determination of boron in high-temperature alloy steel using non-linear inter-element correction and microwave plasma-atomic emission spectrometry

Article information

Article type
Paper
Submitted
28 mar. 2013
Accepted
08 may. 2013
First published
24 may. 2013

J. Anal. At. Spectrom., 2013,28, 1242-1246

Determination of boron in high-temperature alloy steel using non-linear inter-element correction and microwave plasma-atomic emission spectrometry

T. D. Hettipathirana, J. Anal. At. Spectrom., 2013, 28, 1242 DOI: 10.1039/C3JA50103E

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