Accession Number : AD0666554

Title :   TRACE METALS, EQUILIBRIUM AND KINETICS OF TRACE METAL COMPLEXES IN NATURAL MEDIA.

Descriptive Note : Doctoral thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY

Personal Author(s) : Matson,Wayne Reimer

Report Date : JAN 1968

Pagination or Media Count : 271

Abstract : A composite mercury graphite electrode (CMGE) was constructed and was shown to follow the theoretical behavior for thin film electrodes. An analytical system capable of performing multiple analysis of metal ions was built using the CMGE. Anodic stripping techniques using the CMGE were developed for obtaining information on the complicated distribution of the trace elements Zn, Cd, In, Pb, Cu, Bi, in samples from the environment, and for obtaining parameters related to the formation constant K, and the rate constants kf and kb for naturally occurring trace metal complexes of these metals and several others - Fe, Mg, Co, Ni, U. A portion of the trace metals atmospheric samples were found to be bound to particulate material of greater than one micron diameter. A ubiquitous nonlabile trace metal component was identified in all fresh waters. A quantitatively and qualitatively different nonlabile component is present in some sea water samples. Up to eight different nonlabile complexing agents were identified in one sample. Estuarine and surface mechanisms whereby nonlabile materials can be removed were studied briefly. A complicated distribution of strong labile complexes which is apparently associated with biological activity was also identified in many waters.

Descriptors :   (*MICROANALYSIS, INSTRUMENTATION), (*COMPLEX COMPOUNDS, MICROANALYSIS), ELECTROCHEMISTRY, ELECTRODES, MERCURY, GRAPHITE, CHEMICAL EQUILIBRIUM, REACTION KINETICS, AIR POLLUTION, WATER POLLUTION, SEA WATER, ATMOSPHERES, ZINC, CADMIUM, INDIUM, LEAD(METAL), COPPER, BISMUTH, THESES

Subject Categories : Atmospheric Physics
      Physical Chemistry
      Physical and Dynamic Oceanography
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE