the major findings were as follows : ( 1 ) urinary excretion of all heavy metals and organic substances except mercury , together with creatinine excretion , significantly decreased under the water restrictive condition whereas under the water loading condition their excretion significantly increased and ( 2 ) daily variations in urinary excretion of lead , cadmium , chromium , copper , hippuric acid , delta-aminolaevulinic acid , and coproporphyrin did not differ significantly from the variation in urinary excretion of creatinine ( profile analysis , p greater than 0.05 ) .
C0347988
heavy metals
C0009968
copper