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An Intercomparison Study of Analytical Methods for the Determination of Magnesium in Low Alloy Steel
Author(s) -
Recknagel Sebastian,
Richter Silke,
Reinholdsson Fredrik,
Pettersson Jean,
Gustavsson Ingemar
Publication year - 2012
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201100187
Subject(s) - aqua regia , inductively coupled plasma mass spectrometry , inductively coupled plasma atomic emission spectroscopy , mass spectrometry , analytical chemistry (journal) , inductively coupled plasma , materials science , glow discharge , magnesium , chemistry , plasma , metallurgy , chromatography , metal , physics , quantum mechanics
In an intercomparison study three low alloy steel materials were analyzed on their content of the trace element Mg, and five different analytical techniques were used, namely spark‐OES, inductively coupled plasma optical emission spectrometry (ICP‐OES), inductively coupled plasma time of flight mass spectrometry (ICP‐TOFMS), inductively coupled plasma quadrupole mass spectrometry (ICP‐QMS), and glow discharge mass spectrometry (GD‐MS). Solid steel discs were used for analysis with spark‐OES and GD‐MS. For the analyses with ICP‐OES, ICP‐TOFMS, and ICP‐QMS steel chips were wet‐digested in aqua regia, and the wet‐digestion was performed either in polypropylene tubes placed in a heating block or in Teflon pressure vessels using a microwave assisted system. The Mg concentrations obtained for the three steel materials were: 2.0, 2.8, and 10.3 µg g −1 , respectively, and the spread in results was acceptable, giving RSD values in the range of 20–30%.