standing committee of analysts methods for the examination waters and associated materials documents with an isbn number were previously published by hmso without are available via environment agency book no 1 emission spectrophotometric multielement 0117500151 analysis sediments other interest to water industry 1980 2 cadmium in potable atomic absorption 0117511366 spectrophotometry 1976 3 lead 0117511374 4 chemical oxygen demand dichromate value polluted 0117512494 waste 1977 5 amenability sewage sludge anaerobic digestion 0117512508 6 sampling initial preparation 0117512516 waterworks soils plant superseded 89 prior 7 determination ph soil mud 0117512524 sediment lime requirement 8 magnesium effluents 0117513121 9 calcium 011751313x 10 mercury sludges flameless 0117513261 1978 11 iron raw 011751327x using