Zobrazeno 1 - 10
of 21
pro vyhledávání: '"George A. Welford"'
Autor:
George A. Welford, Isabel M. Fisenne
Publikováno v:
Health Physics. 50:739-746
Specimens of lung, liver, kidney and vertebrae from New York City autopsy cases were measured for naturally occurring U. An age dependency in U concentration was found in lung and vertebrae. The bone concentration was found to be a factor of 10 lower
Publikováno v:
AIChE Journal. 19:991-998
Surface sulfonated copolymer beads and glass beads of various size distributions were used to study the removal of liquid from a packed column of spherical beads under centrifugal force. At low forces, from 1 G to approx. 20 G, the volume of liquid r
Publikováno v:
Science. 134:980-984
The causes and effects of high concentrations of shorterlived fission products in fall-out in New York City during 1958 and 1959 are discussed. Data previously reported are supplemented with data on concentrations of Sr/sup 90/, Cs/sup 137/, Ru/sup 1
Publikováno v:
Mikrochimica Acta. 56:297-303
A technique combining Chromatographic separation with radiometric precipitation is described in which nickel is determined at theμg to submicrogram range. An appropriate solvent completely isolates nickel from interference on a Chromatographic strip
Publikováno v:
The Journal of Physical Chemistry. 74:1139-1142
Publikováno v:
American Industrial Hygiene Association Journal. 22:443-447
A method is described for the separation and measurement of alpha activity from enriched uranium in urine. The uranium is collected by an alkaline phosphate precipitation and is isolated from urine constituents through ion exchange. The resulting sol
Publikováno v:
American Industrial Hygiene Association Journal. 19:464-468
Based on the biochemical similarity of Th and Pu, the indicated minimum sensitivity required to study the excretion rate and body burden of Th is 0.2 mu g/l of urine. Several spectrophotometric methods are capable of detecting this quantity of Th. Pr
Autor:
George A. Welford, William R. Collins
Publikováno v:
Science. 131:1711-1715
Data are presented on the levels of strontium-90, strontium-89, cesium- 137, zirconium-95, cerium-144, yttrium-91, and tungsten-185 in samples of air and rain water and air collected in New York City during 1968. The data indicate that short-lived fi
Publikováno v:
Journal of Chromatography A. 25:144-152
The technique described is a sensitive analytical tool developed for the determination of trace elements. It combines paper chromatography, as the separation process with radiometric precipitation for quantitative determination. Procedures are descri
Publikováno v:
Analytical Chemistry. 41:1866-1869