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Showing 1 to 1 of 1 for “"Sulphate contamination"”.
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The effects of commercial chemical cleaning processes on sandstones in Scotland.
… difference was in fact due to the presence of sulphate probably from atmospheric pollution. On scrutiny of the data base constructed from the results of the above studies practical conclusions were drawn: 1) That sandstone can absorb and retain applied chemicals. 2) That sulphate content of …