Atomic Spectrometry Group

Publications 1980-89
  1. Redfield D., Frech W.
    Identification and effect of pre-atomisation losses on the determination of aluminium by graphite furnace atomic absorption spectrometry.
    J. Anal. At. Spectrom. 4 (1989) 685-690.
  2. Baxter D.C., Frech W.
    Determination of mercury by atomic absorption spectrometry using a platinum-lined graphite furnace for in situ preconcentration.
    Anal. Chim. Acta225 (1989) 175-183.
  3. Frech W., Arshadi M., Baxter D.C.
    Vapour-phase temperature measurements in the evaluation of platform designs for graphite furnace atomic absorption spectrometry.
    J. Anal. At. Spectrom. 4 (1989) 625-629.
  4. Baxter D.C.
    Evaluation of the simplified generalised standard additions method for calibration in the direct analysis of solid samples by graphite furnace atomic spectrometric techniques.
    J. Anal. At. Spectrom. 4 (1989) 415-421.
  5. Ohlsson K.E.A., Frech W.
    Photographic observation of molecular spectra in inverse Zeeman-effect graphite furnace atomic absorption spectrometry.
    J. Anal. At. Spectrom. 4 (1989) 379-385.
  6. Dedina J., Frech W., Lundberg E., Cedergren A.
    Atomisation of selenium hydride in the graphite furnace.
    J. Anal. At. Spectrom.4 (1989) 143-148.
  7. Wennrich R., Frech W., Lundberg E.
    Spectral interferences in graphite furnace Zeeman effect atomic absorption spectrometry.
    Spectrochim. Acta 44B (1989) 239-246.
  8. Lundberg E., Frech W., Harnly J.M.
    Simultaneous multi-element analysis by continuum source atomic absorption spectrometry with a spatially and temporally isothermal graphite furnace.
    J. Anal. At. Spectrom. 3 (1988) 1115-1119.
  9. Lindberg I., Lundberg E., Arkhammar P., Berggren P-O.
    Direct determination of selenium in solid biological materials by graphite furnace atomic absorption spectrometry.
    J. Anal. At. Spectrom. 3 (1988) 497-501.
  10. Nygren O., Nilsson C-A., Frech W.
    On-line interfacing of a liquid chromatograph to a continuously heated graphite furnace atomic absorption spectrophotometer for element-specific detection.
    Anal. Chem. 60 (1988) 2204-2208.
  11. Lundberg E., Frech W., Baxter D.C., Cedergren A.
    Spatially and temporally constant-temperature graphite furnace for atomic absorption/emission spectrometry.
    Spectrochim. Acta 43B (1988) 451-457.
  12. Frech W., Baxter D.C., Lundberg E.
    Spatial and temporal non-isothermality as limiting factors for absolute analysis by graphite furnace atomic absorption spectrometry.
    J. Anal. At. Spectrom. 3 (1988) 21-25.
  13. Baxter D.C.
    Experimental and theoretical intensities for graphite furnace atomic emission spectrometry.
    Spectrochim. Acta 43B (1988) 129-139.
  14. Baxter D.C.
    Advantages of spatially isothermal graphite furnaces for atomic spectrometry.
    Ph.D. Thesis, Umeå University (1988). ISBN 91-7174-319-7.
  15. Frech W., Baxter D.C.
    Solution to spatial non-isothermality in electrothermal atomic spectrometry.
    In Analytiktreffen 1986 und IX CANAS, Wissenschaftliche Beiträge der Karl-Marx-Universit&aumlt, Neubrandenburg. Band 1, pp. 47-60 (1987).
  16. Baxter D.C., Frech W.
    Temperature gradients as a limiting factor for absolute analysis by graphite furnace atomic absorption spectrometry.
    Spectrochim. Acta 42B (1987) 1005-1010.
  17. Dedina J., Frech W., Cedergren A., Lindberg I., Lundberg E.
    Determination of selenium by graphite furnace atomic absorption spectrometry. Part 2. Role of nickel for analyte stability.
    J. Anal. At. Spectrom. 2 (1987) 435-439.
  18. Frech W., Baxter D.C.
    Evaluation of the solid sampling technique for the determination of aluminium in biological materials by atomic absorption and atomic emission spectrometry.
    Fresenius Z. Anal. Chem. 328 (1987) 400-404.
  19. Baxter D.C., Frech W.
    Analysis of solid samples by graphite furnace atomic emission spectrometry.
    Fresenius Z. Anal. Chem. 328 (1987) 324-329.
  20. Dedina J., Frech W., Lindberg I., Lundberg E., Cedergren A.
    Determination of selenium by graphite furnace atomic absorption spectrometry. Part 1. Interaction between selenium and carbon.
    J. Anal. At. Spectrom. 2 (1987) 287-291.
  21. Cedergren A., Frech W.
    Determination of aluminium in biological materials by graphite furnace atomic absorption spectrometry (GFAAS).
    Pure Appl. Chem. 59 (1987) 221-228.
  22. Lundberg E., Bergmark B.
    Determination of total tin in geological materials by electrothermal atomic absorption spectrometry.
    Anal. Chim. Acta 188 (1986) 111-118.
  23. Lundberg E., Frech W., Cedergren A.
    Grafitugnstekniken är nu väletablerad. (The graphite furnace technique is now well-established.)
    Kemisk Tidskrift nr 9 (1986) 42. (In Swedish)
  24. Frech W., Lundberg E., Cedergren A.
    Investigation of interference effects in the presence of sodium and copper chlorides using platform graphite furnace AAS.
    Can. J. Spectrosc. 30 (1986) 123-129.
  25. Frech W., Baxter D.C., Hütsch B.
    Spatially isothermal graphite furnace for atomic absorption spectrometry using side-heated cuvettes with integrated contacts.
    Anal. Chem. 58 (1986) 1973-1977.
  26. Cedergren A., Lindberg I., Lundberg E., Baxter D.C., Frech W.
    Investigations of reactions involved in graphite furnace atomic absorption procedures. Part 14. A study of some factors influencing the determination of selenium.
    Anal. Chim. Acta 180 (1986) 373-388.
  27. Frech W., Lindberg A.O., Lundberg E., Cedergren A.
    Atomization mechanisms and gas phase reactions in graphite furnace atomic absorption spectrometry.
    Fresenius Z. Anal. Chem. 323 (1986) 716-725.
  28. Slanina P., Frech W., Ekström L-G., Lööf L., Slorach S., Cedergren A.
    Dietary citric acid enhances absorption of aluminium in antacids.
    Clin. Chem. 32 (1986) 539-541.
  29. Lundberg E., Baxter D.C., Frech W.
    Constant-temperature atomiser-computer controlled echelle spectrometer system for graphite furnace atomic emission spectrometry.
    J. Anal. At. Spectrom. 1 (1986) 105-113.
  30. Baxter, D.C., Littlejohn, D., Ottaway, J.M., Fell, G.S., Halls, D.J.
    Determination of chromium in urine by probe electrothermal atomisation atomic emission spectrometry using a low-resolution monochromator.
    J. Anal. At. Spectrom. 1 (1986) 35-39.
  31. Baxter, D.C., Duncan, I.S., Littlejohn, D., Marshall, J., Ottaway, J.M., Fell, G.S., Ataman, O.Y.
    Low-resolution monochromator system for elactrothermal atomisation atomic emission spectrometry with probe atomisation.
    J. Anal. At. Spectrom. 1 (1986) 29-33.
  32. Marshall, J., Baxter, D.C., Carroll, J., Cook, S., Corr, S.P., Giri, S.K., Durie, D., Littlejohn, D., Ottaway, J.M., Stephen, S.C., Wright, S.
    The probe furnace in atomic spectrometry.>BR> Anal. Proc. 22 (1985) 371-373.
  33. Frech W., Lundberg E., Cedergren A.
    Investigations of some methods used to reduce interference effects in graphite furnace atomic absorption spectrometry.
    Prog. Analyt. At. Spectrosc. 8 (1985) 257-370.
  34. Slanina P., Frech W., Bernhardson Å., Cedergren A., Mattsson P.
    Influence of dietary factors on aluminium absorption and retention in the brain and bone of rats.
    Acta Pharmacol. Toxicol. 56 (1985) 331-336.
  35. Frech W., Ottaway J.M., Bezur L., Marshall J.
    Determination of manganese in urine by electrothermal atomic emission spectrometry.
    Can. J. Spectrosc. 30 (1985) 7-12.
  36. Baxter D.C., Frech W., Lundberg E.
    Determination of aluminium in biological materials by constant-temperature graphite furnace atomic-emission spectrometry.
    Analyst 110 (1985) 475-482.
  37. Frech W., Lundberg E., Cedergren A.
    Chemische Reaktionen im Graphitrohrofen und deren analytische Bedeutung bei der Atomabsorptionsspektrometrie.
    In Fortschritte in der atomspektrometrischen Spurenanalytik. B. Welz (Ed.) Verlag Chemie, Weinheim, Band 1, pp. 49-72 (1984). (In German)
  38. Slanina P., Falkeborn Y., Frech W., Cedergren A.
    Aluminium concentrations in the brain and bone of rats fed citric acid, aluminium citrate or aluminium hydroxide.
    Food Chem. Toxic. 22 (1984) 391-397.
  39. Lundberg E., Frech W., Lindberg I.
    Determination of lead in biological materials by constant-temperature electrothermal atomic absorption spectrometry.
    Anal. Chim. Acta 160 (1984) 205-215.
  40. Cedergren A., Frech W., Lundberg E.
    Estimation of oxygen pressure in graphite furnaces for atomic absorption spectrometry.
    Anal. Chem. 56 (1984) 1382-1387.
  41. Siemer D.D., Lundberg E., Frech W.
    Gas phase temperatures in Massmann furnaces equipped with L'vov platforms.
    Appl. Spectrosc. 38 (1984) 389-391.
  42. Siemer D.D., Frech W.
    Improving the performance of the CRA atomizer by reducing the rate of diffusional atom loss and delaying analyte volatilization.
    Spectrochim. Acta 39B (1984) 261-269.
  43. Zhou N.G., Frech W., de Galan, L.
    On the relationship between heating rate and peak height in electrothermal atomic absorption spectroscopy.
    Spectrochim. Acta 39B (1984) 225-235.
  44. Frech W., Cedergren A., Lundberg E., Siemer D.D.
    Electrothermal atomic absorption spectroscopy - present understanding and future needs.
    Spectrochim. Acta 38B (1983) 1435-1446.
  45. Zhou N.G., Frech W., Lundberg E.
    Rapid determination of lead, bismuth, antimony and silver in steels by flame atomic absorption spectrometry combined with flow injection analysis.
    Anal. Chim. Acta 153 (1983) 23-31.
  46. Frech W., Cedergren A., Lundberg E.
    Vapour phase interference effects in electrothermal atomic absorption spectroscopy (AAS).
    In Analytiktreffen, Wissenschaftliche Beiträge der Karl-Marx-Universit&aumlt, Neubrandenburg (1982).
  47. Persson J-Å.
    An experimental and theoretical investigation of interference effects in electrothermal atomic absorption spectrometry with special emphasis on aluminium, phosphorus and arsenic.
    Ph.D. Thesis, Umeå University (1982). ISBN 91-7174-110-0.
  48. Frech W., Jonsson S.
    A new furnace design for constant temperature electrothermal atomic absorption spectroscopy.
    Spectrochim. Acta 37B (1982) 1021-1028.
  49. Frech W., Cedergren A., Cederberg C., Vessman J.
    Evaluation of some critical factors affecting determination of aluminium in blood, plasma or serum by electrothermal atomic absorption spectroscopy.
    Clin. Chem. 28 (1982) 2259-2263.
  50. Lundberg E., Bergmark B., Frech W.
    Investigations of reactions involved in electrothermal atomic absorption procedures. Part 11. A theoretical and experimental investigation of factors influencing the determination of tin.
    Anal. Chim. Acta 142 (1982) 129-142.
  51. Frech W., Zhou N.G., Lundberg E.
    A critical study of some methods used to investigate atom formation processes in GFAAS.
    Spectrochim. Acta 37B (1982) 691-702.
  52. Persson J-Å., Irgum K.
    Determination of dimethylarsinic acid in seawater in the sub-ppb range by electrothermal atomic absorption spectrometry after preconcentration on an ion exchange column.
    Anal. Chim. Acta 138 (1982) 111-119.
  53. Frech W., Lundberg E., Barbooti M.M.
    Direct determination of trace metals in solid samples by atomic absorption spectrometry with electrothermal atomizers. Part 4. Interference effects in the determination of lead and bismuth in steels.
    Anal. Chim. Acta 131 (1981) 45-52.
  54. Koreckova J., Frech W., Lundberg E., Persson J-Å., Cedergren A.
    Investigations of reactions involved in electrothermal atomic absorption procedures. Part 10. Factors influencing the determination of arsenic.
    Anal. Chim. Acta 130 (1981) 267-280.
  55. Lundberg E., Frech W.
    Influence of instrumental response time on interference effects in graphite furnace atomic absorption spectrometry.
    Anal. Chem. 53 (1981) 1437-1442.
  56. Cedergren A., Frech W., Lundberg E., Persson J-Å.
    Investigations of reactions involved in electrothermal atomic absorption procedures. Part 9. An atomization system with controlled atmosphere and temperature for the determination of volatile elements in complex matrices.
    Anal. Chim. Acta 128 (1981) 1-8.
  57. Ottaway J.M., Bezur L., Fakhrul-Aldeen R., Frech W., Marshall J.
    Carbon furnace atomic emission determination of trace elements in blood and urine.
    In Trace Element Analytical Chemistry in Medicine and Biology. P. Brätter and P. Schramel (Eds.). Walter de Gruyter & Co, Berlin, pp. 575-586 (1980).
  58. Frech W., Persson J-Å., Cedergren A.
    Chemical reactions in atom reservoirs used in atomic absorption spectroscopy.
    Prog. Analyt. At. Spectrosc. 3 (1980) 279-297.
  59. Persson J-Å., Frech W., Pohl G., Lundgren K.
    Determination of aluminium in wood pulp liquors using graphite furnace atomic-absorption spectrometry.
    Analyst 105 (1980) 1163-1170.
  60. Persson J-Å., Frech W.
    Investigations of reactions involved in electrothermal atomic absorption procedures. Part 8. A theoretical and experimental study of factors influencing the determination of phosphorus.
    Anal. Chim. Acta 119 (1980) 75-89.
  61. Lundberg E., de Mare J.
    Interval estimates in the spectroscopy calibration problem.
    Scand. J. Statist. 7 (1980) 40-42.
  62. Frech W., Cedergren A.
    Investigations of reactions involved in flameless atomic absorption procedures. Part 7. Theoretical and experimental study of factors influencing the determination of silicon.
    Anal. Chim. Acta 113 (1980) 227-235.
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