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Author: Fletcher, Walter William × End date: 1979 ×

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    Combustion separation techniques in glass analysis
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1971) Fletcher, Walter William
    The combustion method is suitable for the separation and determination of volatile components of glass. Details of fluorine, boron, sulphur and chloride in glass as well as carbon and sulphur in sand. Comparison with other methods demonstrates the efficiency of the combustion method.
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    The work of the Chemical Analysis Committee of the Society of Glass Technology
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1971) Fletcher, Walter William
    In this review of the work of the Chemical Analysis Committee of the Society of Glass Technology it has not been possible to give a true picture of the industry and conscientiousness of the members of the Committee. Much of the detail of the work involved has been omitted but can be found in the relevant references given in the bibliography. A large volume of work has been completed by the Committee and clearly the revisions of standard glasses 2, 3 and 4 will incorporate many of the developments accruing from the revision of Standard Glass No. 1.
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    The mathematical correction of matrix effects in the analysis of soda-lime-silica glasses by X.R.F.
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1971) Austin, Michael Jeffrey; Fletcher, Walter William; Leech, Reginald Joseph; Hickson, Kenneth
    The accurate analysis of materials over a wide range of compositions by X-ray fluorescence techniques (X.R.F.) requires an effective method for the correction of absorption effects within the sample due to variations in the composition of the matrix. A mathematical method of correcting for these matrix effects based on tabulated values of the mass absorption coefficients of elements has been evaluated on a series of soda-lime-silica glasses containing the oxides of sodium, calcium, silicon, aluminium, magnesium, potassium, iron. zirconium, titanium, arsenic, sulphur and antimony. The method proved effective for all except the last four elements but in all cases the X.R.F. results compared favourably with the analysis obtained by standard chemical methods. Other sources of error were considered to be present for sulphur and antimony and a second correction for the influence of calcium proved to be effective in the case of antimony.