... recycling sewage sludges and waste effluentson land, pp. 79–90. Recycling Municipal Sludges and Effluents on Land, Champaign,Illinois, National Assoc. of State Universities and Land- Grant Colleges, ... used radionuclides most fre-quently observed were gallium-67, indium -1 11 , iodine-123, iodine-131, thal-lium-201 and technetium-99. Acidity (pH) The pH of most biosolids — whether liquid, ... Majesty’s Stationary Of ce, Pollut. Paper No.27, London, England.DoE, 1993, The examination of sewage sludges for polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans, Foundation...