Nuclear and radiochemical techniques in chemical analysis. Progress report, August 1, 1978-July 31, 1979

• Main Authors: Finston, H. L., Williams, E. T.
• Language: unknown
• Published: 2014
• Subjects: 37 INORGANIC; ORGANIC; PHYSICAL AND ANALYTICAL CHEMISTRY; ALKALINE EARTH METALS; SOLVENT EXTRACTION; BISMUTH; ACTIVATION ANALYSIS; CARBONIC ACID ESTERS; PHASE DIAGRAMS; IRON; LEAD; THALLIUM; WATER; IRON COMPLEXES; ISOTOPE DILUTION; NEUTRON REACTIONS; RESEARCH PROGRAMS; TTA; X-RAY EMISSION ANALYSIS; BARYON REACTIONS; CHEMICAL ANALYSIS; COMPLEXES; DIAGRAMS; ELEMENTS; ESTERS; EXTRACTION; HADRON REACTIONS; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; ISOTOPE APPLICATIONS; KETONES; METALS; NONDESTRUCTIVE ANALYSIS; NUCLEAR REACTIONS; NUCLEON REACTIONS; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; TRACER TECHNIQUES; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENTS; Carbonic acid
• Online Access: http://www.osti.gov/servlets/purl/6016628; https://www.osti.gov/biblio/6016628; https://doi.org/10.2172/6016628

Studies of homogeneous liquid-liquid extraction have been extended to include (1) a detailed determination of the phase diagram of the system propylene carbonate-water, (2) the extraction of a large variety of both monodentate and bidentate iron complexes, (3) the solvent extraction characteristics of analogues of propylene carbonate, (4) the behavior under pressure of the propylene carbonate water system, and (5) the extraction behavior of alkaline earth - TTA chelates. One consequence of these studies was the observation that the addition of ethanol to propylene carbonate-water or to isobutylene carbonate-water yields a single homogeneous phase. Subsequent evaporation of the ethanol restores the two immiscible phases. Past neutron activation analysis has been attempted for the heavy elements Pb, Bi, Tl at the Brookhaven HFBR (in- or near-core position) and at the Brookhaven CLIF facility. The latter appears more promising and we have initiated a collaborative program to use the CLIF facility. A milking system which can provide ca. 16 .mu.Ci of carrier-free /sup 212/Pb was developed for use in an isotope dilution technique for lead. Collaboration with laboratories already determining trace lead by flameless Atomic Absorption or by concentration by electrodeposition into a hanging drop followed by Anodic stripping will be proposed. The Proton X-Ray Emission system has undergone marked improvement with the acquisition of a new high resolution Si(Li) detector and a new multi-channel analyzer system. Various techniques have been explored to dissolve and prepare samples for PIXE analysis and also for verification by Atomic Absorption analysis.