Atomic Spectrometry Group

Publications 1990-present

  1. Hadgu N., Gustavsson J., Frech W., Axner O.
    Rubidium atom distribution and non-spectral interference effects in transversely heated graphite atomisers evaluated by wavelength modulated diode laser absorption spectrometry.
    Spectrochim. Acta 53B (1998) 923-943.
  2. Yin X., Frech W., Hoffman E., Ludke C., Skole J.
    Mercury speciation by coupling cold vapour atomic absorption spectrometry with flow injection on-line pre-concentration and liquaid chromatographic separation.
    Fresenius J. Anal. Chem. 361 (1998) 761-766.
  3. Kärrholm J., Frech W., Nivbrant B., Maalchau H., Snorrason F., Herberts P.
    Fixation and metal release from the Tifit femoral stem prosthesis. Five-year follow up of 64 cases.
    Acta Orthop. Scand. 69 (1998) 369-378.
  4. Snell J. P., Qian J., Johansson M,. Smit K., Frech W.
    Stability and reactions of mercury species in organic solution.
    Analyst 123 (1998) 905-909.
  5. Johansson M., Hansson R., Snell J. P., Frech W.
    Determination of nickel using electrochemical reduction and carbonyl generation with in situ trapping electrothermal atomic absorption spectrometry.
    Analyst 123 (1998) 1223-1228.
  6. Hadgu N., Frech W.
    Improved performance of transverse heated graphite atomisers by elimination of convective gas flows.
    Spectrochim. Acta 52B (1997) 1431-1442.
  7. Frech W.
    Non-spectral interference effects in platform equipped graphite atomisers.
    Spectrochim. Acta 52B (1997) 1333-1340.
  8. Ljung P., Nyström E., Axner O., Frech W.
    Detection of titanium in electrothermal atomisers by laser induced fluorescence. Part 2. Investigation of various types of atomisers.
    Spectrochim. Acta 52B (1997) 703-716.
  9. Johansson M., Baxter D. C., Olsson K. E. A., Frech W.
    Mechanism of formation and spatial distribution of lead atoms in quartz tube atomisers.
    Spectrochim. Acta 52B (1997) 643-656.
  10. Snell J. P., Sandberg S., Frech W.
    Determination of cadmium in very low concentration urine samples by electrothermal atomic absorption spectrometry.
    J. Anal. At. Spectrom. 12 (1997) 491-494.
  11. Hänström S., Briche C., Emteborg H., Baxter D. C.
    Large volume injections in capillary gas chromatography using a separately heated packed pre-column: application to mercury speciation in natural water.
    Analyst 121 (1996) 1657-1663.
  12. Dedina J., Matousek T., Frech W.
    On-line atomisation of selenium hydride in graphite furnaces: estimate of atomic absorption coefficient and spectroscopic temperature.
    Spectrochim. Acta 51B (1996) 1107-1119.
  13. Hadgu N., Olsson K. E. A., Frech W.
    Diffusion vapour transfer modelling for end capped atomisers. Part 2. Atomiser with open injection port.
    Spectrochim. Acta 51B (1996) 1081-1093.
  14. Frech W., Baxter D. C.
    Spatial distributions of non-atomic species in graphite furnaces.
    Spectrochim. Acta 51B (1996) 961-972.
  15. Snell J. P., Frech W., Thomassen Y.
    Performance improvements in the determination of mercury species in natural gas condensate using an on-line amalgamation trap or solid phase micro-extraction with capillary gas chromatography - microwave induced plasma - atomic emission spectrometry.
    Analyst 121 (1996) 1055-1060.
  16. Emteborg H., Sinemus H-W., Radziuk B., Baxter D. C., Frech W.
    Gas chromatography coupled with atomic absorption spectrometry - a sensitive intrumentation for mercury speciation.
    Spectrochim. Acta 51B (1996) 829-837.
  17. Frech W.
    Recent developments in atomizers for electrothermal atomic absorption spectrometry.
    Fresenius J. Anal. Chem. 355 (1996) 475-486.
  18. Berglund M.
    The importance of the rollover absorbance and the Zeeman sensitivity ratio related coefficient for the accuracy in the linearization of calibration curves in electrothermal atomic absorption spectrometry with Zeeman effect background correction.
    Spectrochim. Acta 51B (1996) 429-439.
  19. Reinholdsson F., Briche C., Emteborg H., Baxter D.C., Frech W.
    Determination of mercury species in natural waters.
    In CANAS '95 Colloquium Analytische Atomspektroskopie, B. Welz (Ed.), Bodenseewerk Perkin-Elmer GmbH, Überlingen, pp 399-405 (1996).
  20. Liu J., Nordberg G.F., Frech W.
    Aluminium accumulation in some tissues of rats with compromised kidney function induced by cadmium-metallothionein.
    Pharmacol. Toxicol. 78 (1996) 289-295.
  21. Frech W., Baxter D.C., Bakke B., Snell J., Thomassen Y.
    Determination and speciation of mercury in natural gases and gas condensates.
    Anal. Commun. 33 (1996) 7H-9H.
  22. Sjögren B., Ljunggren K.G., Almkvist O., Frech W., Basun H.
    A follow-up study of five cases of aluminosis.
    Int. Arch. Occup. Environ. Health 68 (1996) 161-164.
  23. Sjögren B., Iregren A., Frech W., Hagman M., Johansson L., Tesarz M., Wennberg A.
    Effects on the nervous system among welders exposed to aluminium and manganese.
    Occup. Environ. Med. 53 (1996) 32-40.
  24. Emteborg H., Björklund E., Ödman F., Karlsson L., Mathiasson L., Frech W., Baxter D.C.
    Determination of methylmercury in sediments using supercritical fluid extraction and gas chromatography coupled with microwave-induced plasma atomic emission spectrometry.
    Analyst 121 (1996) 19-29.
  25. Frech W., Baxter D.C.
    Electrothermal atomic absorption spectrometry.
    In Encyclopedia of Analytical Science, Academic Press, London, pp 228-236 (1995).
  26. Ohlsson K.E.A., Hieftje G.M.
    Atomization of carbon containing species in the inductively coupled plasma.
    Spectrochim. Acta 50B (1995) 1805-1822.
  27. Frech W., Baxter D.C., Dyvik B., Dybdahl B.
    Determination of total mercury in natural gases using the amalgamation technique and cold vapour atomic absorption spectrometry.
    J. Anal. At. Spectrom. 10 (1995) 769-775.
  28. Johansson M., Baxter D.C., Frech W.
    Signal to noise ratios for organolead species in coupled gas chromatography - atomic absorption spectrometry using quartz tube atomizers.
    J. Anal. At. Spectrom. 10 (1995) 711-720.
  29. Hadgu N., Ohlsson K.E.A., Frech W.
    Diffusion vapour transfer modelling for an end-capped atomizer. Part 1. Atomizer with closed injection port.
    Spectrochim. Acta 50B (1995) 1077-1093.
  30. Berglund M., Baxter D.C.
    Test of the generalized standard addition method and linearization algorithms for the direct, simultaneous, multi-element analysis of solid samples by electrothermal atomic absorption spectrometry.
    Mikrochim. Acta 119 (1995) 311-322.
  31. Baxter D.C., Frech W.
    Electrothermal atomic emission spectrometry.
    Spectrochim. Acta 50B (1995) 655-706.
  32. Johansson M., Berglöf T., Baxter D.C., Frech W.
    Supercritical fluid extraction of ionic alkyllead species from sediment and urban dust.
    Analyst 120 (1995) 755-759.
  33. Baxter D.C., Frech W.
    Speciation of lead in environmental and biological samples.
    Pure Appl. Chem. 67 (1995) 615-648.
  34. Berglund M.
    Towards multielement electrothermal atomic absorption spectrometry.
    Ph.D. Thesis, Umeå University (1995). ISBN 91-7191-023-9.
  35. Johansson M., Emteborg H., Glad B., Reinholdsson F., Baxter D.C.
    Preliminary appraisal of a novel sampling and storage technique for the speciation analysis of lead and mercury in seawater.
    Fresenius J. Anal. Chem. 351 (1995) 461-466.
  36. Emteborg H., Baxter D.C., Sharp M., Frech W.
    Evaluation, mechanism and application of solid-phase extraction using a dithiocarbamate resin for the sampling and determination of mercury species in humic-rich natural waters.
    Analyst 120 (1995) 69-77.
  37. Gunneriusson L., Baxter D., Emteborg H.
    Complexation at low concentrations of methyl and inorganic mercury(II) to a hydrous goethite (a-FeOOH) surface.
    J. Colloid Interface Sci. 169 (1995) 262-266.
  38. Sjögren B., Iregren A., Frech W., Hagman M., Johansson L., Tesarz M., Wennberg, A.
    Påverkan på nervsystemet hos svetsare exponerade för aluminium eller mangan. (The effect on the nervous system of welders exposed to aluminium or manganese.)
    Arbete och Hälsa 27 (1994). (In Swedish)
  39. Hadgu N., Frech W.
    Performance of side-heated graphite atomizers in atomic absorption spectrometry using tubes with end caps.
    Spectrochim. Acta 49B (1994) 445-457.
  40. Emteborg H., Hadgu N., Baxter D.C.
    Quality control of a recently developed analytical method for the simultaneous determination of methylmercury and inorganic mercury in environmental and biological samples.
    J. Anal. At. Spectrom. 9 (1994) 297-302.
  41. Ohlsson K.E.A., Sturgeon R.E., Willie S.N., Luong V.T.
    Figures of merit for two-step furnace atomization plasma emission spectrometry.
    J. Anal. At. Spectrom. 8 (1993) 41-43.
  42. Ellingsen D.G., Holland R.I., Thomassen Y., Landro-Olstad M., Frech W., Kjuus H.
    Mercury and selenium in workers previously exposed to mercury vapour at a chloralkali plant.
    Brit. J. Industr. Med. 50 (1993) 745-752.
  43. Emteborg H., Baxter D.C., Frech W.
    Speciation of mercury in natural waters by capillary gas chromatography with a microwave-induced plasma emission detector following preconcentration using a dithiocarbamate resin microcolumn installed in a closed flow injection system.
    Analyst 118 (1993) 1007-1013.
  44. Johansson M., Berglund M., Baxter D.C.
    Improving accuracy in the quantitation of overlapping, asymmetric, chromatographic peaks by deconvolution: theory and application to coupled gas chromatography atomic absorption spectromery.
    Spectrochim. Acta 48B (1993) 1393-1409.
  45. Berglund M., Frech W., Baxter D.C., Radziuk B.
    A critical evaluation of a multielement ETAAS system using line sources and a transversely heated graphite atomizer with Zeeman effect background correction.
    Spectrochim. Acta 48B (1993) 1381-1392.
  46. Frech W., L'vov B.V.
    Matrix vapours and physical interference effects in graphite furnace atomic absorption spectrometry - II. Side-heated tubes.
    Spectrochim. Acta 48B (1993) 1371-1379.
  47. Baxter D.C., Frech W. Coupled gas chromatography - atomic absorption spectrometry using semi-enclosed tubular atomizers: Theoretical analysis of detector performance characteristics.
    Analyst 118 (1993) 495-504.
  48. L'vov B.V., Frech W.
    Matrix vapours and physical interference effects in graphite furnace atomic absorption spectrometry - I. End-heated tubes.
    Spectrochim. Acta 48B (1993) 425-433.
  49. Ohlsson K.E.A. An atomic and molecular absorption spectrometric study of the atomization chemistry in the graphite tube atomizer.
    Ph.D. Thesis, Umeå University (1993). ISBN 91-7174-740-0.
  50. Ohlsson K.E.A., Cedergren A., Frech W.
    AlH spike formation in a graphite atomizer.
    Spectrochim. Acta 47B (1993) 1525-1533.
  51. Iwamoto E., Ohlsson K.E.A., Baxter D.C., Frech W.
    Spatially resolved spectroscopic measurements of CN, C2 and Al in graphite tube electrothermal atomizers under various operating conditions.
    J. Anal. At. Spectrom. 7 (1992) 1063-1068.
  52. Ohlsson K.E.A., Iwamoto E., Frech W., Cedergren A.
    Transfer of aluminium compounds and spike atomization in spatially isothermal graphite atomizer.
    Spectrochim. Acta 47B (1992) 1341-1352.
  53. Berglund M., Baxter D.C.
    Methods of calibration in the direct analysis of solid samples by electrothermal atomic absorption spectrometry.
    Spectrochim. Acta 47B (1992) E1567-1586.
  54. Frech W., Cedergren A.
    Aluminium.
    In Hazardous Metals in the Environment, M. Stoeppler (Ed.) Techniques and Instrumentation in Analytical Chemistry, Elsevier, Amsterdam, Vol. 12, Ch. 15, pp 451-473 (1992).
  55. Frech W., L'vov B.V., Romanova N.P.
    Condensation of matrix vapours in the gaseous phase in graphite furnace atomic absorption spectrometry.
    Spectrochim. Acta 47B (1992) 1461-1469.
  56. Baxter D.C., Nichol R., Littlejohn D., Lüdke C., Skole J., Hoffmann E.
    Studies on the application of platform atomization to furnace atomic non-thermal excitation spectrometry for the simultaneous multi-element analysis of environmental materials.
    J. Anal. At. Spectrom. 7 (1992) 727-734.
  57. Baxter D.C., Nichol R., Littlejohn D.
    Evaluation of cold vapour furnace atomic non-thermal excitation spectrometry for the determination of mercury in environmental samples.
    Spectrochim. Acta 47B (1992) 1155-1163.
  58. Berglund M., Baxter D.C.
    Computer program (CHMASS) for calculating theoretical characteristic mass values in electrothermal atomic absorption spectrometry.
    J. Anal. At. Spectrom. 7 (1992) 461-470.
  59. Emteborg H., Bulska E., Frech W., Baxter D.C.
    Determination of total mercury in human whole blood by electrothermal atomic absorption spectrometry following extraction.
    J. Anal. At. Spectrom. 7 (1992) 405-408.
  60. Ohlsson K.E.A.
    Aluminium atom formation in electrothermal graphite atomizer atomic absorption spectrometry studied by in situ spectroscopic measurements of aluminium and aluminium hydride.
    J. Anal. At. Spectrom. 7 (1992) 357-363.
  61. Frech W., Li K., Berglund M., Baxter D.C.
    Effects of modifier mass and temperature gradients on analyte sensitivity in electrothermal atomic absorption spectrometry.
    J. Anal. At. Spectrom. 7 (1992) 141-145.
  62. Bulska E., Emteborg H., Baxter D.C., Frech W., Ellinsen D., Thomassen Y.
    Speciation of mercury in human whole blood by capillary gas chromatography with a microwave-induced plasma emission detector system following complexometric extraction and butylation.
    Analyst 117 (1992) 657-663.
  63. Lindberg-Sandström I.
    Bestämning av selen i biologiska material med grafitugnsatomabsorptionsspektrometri. (Determination of selenium in biological material with graphite furnace atomic absorption spectrometry.)
    M.Sc. Thesis, Umeå University (1992). (In Swedish)
  64. Frech W., Baxter D.C.
    Analytische Probleme bei der Bestimmung von Blei- und Quecksilberspezies in biologischen Materialien und Umweltproben.
    In 6. Colloquium Atomspektrometrische Spurenanalytisk, B. Welz (Ed.), Bodenseewerk Perkin-Elmer, pp. 543-555 (1991).
  65. Berglund M., Frech W., Baxter D.C.
    Achieving efficient, multi-element atomisation conditions for atomic absorption spectrometry using a platform-equipped, integrated-contact furnace and a palladium modifier.
    Spectrochim. Acta 46B (1991) 1767-1777.
  66. Bulska E., Baxter D.C., Frech W.
    Capillary column gas chromatography for mercury speciation.
    Anal. Chim. Acta 249 (1991) 545-554.
  67. Stupar J., Frech W.,
    Ultrasonic nebulizer interface system for coupling liquid chromatography and electrothermal atomic absorption spectrometry.
    J. Chromatogr. 541 (1991) 243-255.
  68. Baxter D.C., Frech W., Berglund I.
    Use of partial least squares modelling to compensate for spectral interferences in electrothermal atomic absorption spectrometry with continuum source background correction.
    J. Anal. At. Spectrom. 6 (1991) 109-114.
  69. Ohlsson K.E., Frech W.
    Quantitative in situ spectroscopic measurements and thermodynamic equilibria modelling of CN and C2 in a graphite furnace.
    Spectrochim. Acta 46B (1991) 559-581.
  70. Baxter D.C., Frech W.
    Critical comparison of two standard digestion procedures for the determination of total mercury in natural water samples by cold vapour atomic absorption spectrometry.
    Anal. Chim. Acta 236 (1990) 377-384.
  71. Baxter D.C., Frech W.
    On the direct analysis of solid samples by graphite furnace atomic absorption spectrometry.
    Fresenius J. Anal. Chem. 337 (1990) 253-263.
  72. Frech W., Baxter D.C.
    Temperature dependence of atomization efficiencies in graphite furnaces.
    Spectrochim. Acta 45B (1990) 867-886.
  73. Baxter D.C., Öhman J.
    Multi-component standard additions and partial least squares modelling - a multivariate calibration approach to the resolution of spectral interferences in graphite furnace atomic absorption spectrometry.
    Spectrochim. Acta 45B (1990) 481-491.
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