Community Research and Development Information Service - CORDIS


In this project the use of optical emission spectrometry (OES) was extended to include determinations of C, N, O and H at low levels. If this can be successfully accomplished, substantial savings in laboratory costs and shortened process delays will result from the elimination of the conventional single-elemental methods (that is, fusion or hot extraction) nowadays used in process control analyses at steel works.

The strongest emission lines for the elements of interest are in the VUV (vacuum ultra violet) range, below 2000 Å, where air absorbs electromagnetic radiation so that evacuated spectrometers have to be used. A wavelength survey in the range 1 100�1 700 Å was carried through for the glow discharge lamp to find the most suitable analytical lines in terms of line strength, signal to background (or BEC) and line interferences. A substantial number of binary samples were produced for this part of the investigation.

The analytical procedures and source settings for spark spectrometry were investigated and optimised. It was shown that spectrometry at its best will perform equivalent to the conventional methods for low levels of C and N, but some further refinements may be necessary before spectrometry can be applied with the necessary reliability under routine conditions.

Results for O and H were less satisfactory and it appears that, for the time being, these elements are out of reach for conventional spectrometry. Rather promising results for O were, however, obtained using an experimental glow lamp set-up.

Additional information

Authors: LUNDHOLM M, SIMR, Stockholm (SE);HEMMERLIN M, IRSID, Maizières-lès-Metz (FR);MEILLAND R, IRSID, Maizières-lès-Metz (FR);JOWITT R, Corus UK, Middlesbrough (GB);POULTNEY E B, Corus UK, Middlesbrough (GB);HAKKARAINEN A, Rautaruukki Oyj, Raahe (FI)
Bibliographic Reference: EUR 20628 EN (2003), pp.118. Euro: 25.00
Availability: EUR-OP reference: KI-NA-20628-EN-S Available from EUR-OP sales agents URL:
ISBN: ISBN: 92-894-5150-5
Record Number: 200316062 / Last updated on: 2003-03-20
Original language: en
Available languages: en