A sample preparation technique was developed to separate annual shell layers. Radiation hazard to both activation analysts and subsequent users of irradiated museum specimens was investigated and found to be minimal. A generalized approach to estimating the sensitivity of a particular metal/irradiation facility/assay system was developed. This study investigated the feasibility of using neutron activation analysis of aquatic mollusk shells to measure quantities of trace metals in water. Among the elements suggested for examination were aluminum, arsenic, boron, cadmium, chromium, copper, iron, manganese, nickel, lead, antimony, selenium, strontium, and zinc. (3) To determine the release of selected trace elements during laboratory - simulated in situ coal gasification as a means of determining the pollution potential of these elements during in situ gasification. (2) To optimize methods for spiking coal with inorganic compounds and organic forms of trace elements for the study of their mobilization during in situ coal gasification. The specific objectives of the research were the following: (1) To optimize the operational parameters of a device developed for the simulation of in situ coal gasification in both the forward- and reverse-burn modes so that it may be used most effectively as a laboratory test method to determine the mobilization potential of trace elements and other pollutants that may be generated or released during in more » situ coal gasification.
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The trace elements can be introduced in various forms, and gasification conditions may be varied. A laboratory method has been developed to demonstrate the mobilization potential of trace elements during in situ coal gasification.