Abstract
The distribution coefficients (K {alpha}) were determined in order to foresee the fate of the radionuclides discharged to the environment. Based upon the source-term released by IPEN`s facilities in Pinheiros River during the year of 1988, three radionuclides were chosen as being the more critical, according to the radiation protection standards: {sup 137} Cs, {sup 60} Co and {sup 232} Th. Their K {alpha} were determined experimentally in laboratory by using the corresponding radioactive tracers {sup 134} Cs, {sup 60} Co and {sup 234} Th. Three different experimental methodologies were used: the static method, the shaken method and the dynamic method. The parameters studied were the effects of pH, aerobic condition and time of contact. The results obtained experimentally for the Kds confirm the predictions that: the cesium is slowly retained by the sediment along the Pinheiros River, the cobalt is an unstable element, therefore its retention by the sediment is affected by variations in the pH values, and finally, the thorium is almost completely retained in the vicinity of the discharge point. (author).
Citation Formats
Lima, M F.
Determination of distribution coefficients for {sup 134} Cs, {sup 60} Co and {sup 234} Th radionuclides in Pinheiro river sediment; Determinacao dos coeficientes de distribuicao para os radionuclideos {sup 134} Cs, {sup 60} Co e {sup 234} Th no desimento do Rio Pinheiros.
Brazil: N. p.,
1992.
Web.
Lima, M F.
Determination of distribution coefficients for {sup 134} Cs, {sup 60} Co and {sup 234} Th radionuclides in Pinheiro river sediment; Determinacao dos coeficientes de distribuicao para os radionuclideos {sup 134} Cs, {sup 60} Co e {sup 234} Th no desimento do Rio Pinheiros.
Brazil.
Lima, M F.
1992.
"Determination of distribution coefficients for {sup 134} Cs, {sup 60} Co and {sup 234} Th radionuclides in Pinheiro river sediment; Determinacao dos coeficientes de distribuicao para os radionuclideos {sup 134} Cs, {sup 60} Co e {sup 234} Th no desimento do Rio Pinheiros."
Brazil.
@misc{etde_10151767,
title = {Determination of distribution coefficients for {sup 134} Cs, {sup 60} Co and {sup 234} Th radionuclides in Pinheiro river sediment; Determinacao dos coeficientes de distribuicao para os radionuclideos {sup 134} Cs, {sup 60} Co e {sup 234} Th no desimento do Rio Pinheiros}
author = {Lima, M F}
abstractNote = {The distribution coefficients (K {alpha}) were determined in order to foresee the fate of the radionuclides discharged to the environment. Based upon the source-term released by IPEN`s facilities in Pinheiros River during the year of 1988, three radionuclides were chosen as being the more critical, according to the radiation protection standards: {sup 137} Cs, {sup 60} Co and {sup 232} Th. Their K {alpha} were determined experimentally in laboratory by using the corresponding radioactive tracers {sup 134} Cs, {sup 60} Co and {sup 234} Th. Three different experimental methodologies were used: the static method, the shaken method and the dynamic method. The parameters studied were the effects of pH, aerobic condition and time of contact. The results obtained experimentally for the Kds confirm the predictions that: the cesium is slowly retained by the sediment along the Pinheiros River, the cobalt is an unstable element, therefore its retention by the sediment is affected by variations in the pH values, and finally, the thorium is almost completely retained in the vicinity of the discharge point. (author).}
place = {Brazil}
year = {1992}
month = {Dec}
}
title = {Determination of distribution coefficients for {sup 134} Cs, {sup 60} Co and {sup 234} Th radionuclides in Pinheiro river sediment; Determinacao dos coeficientes de distribuicao para os radionuclideos {sup 134} Cs, {sup 60} Co e {sup 234} Th no desimento do Rio Pinheiros}
author = {Lima, M F}
abstractNote = {The distribution coefficients (K {alpha}) were determined in order to foresee the fate of the radionuclides discharged to the environment. Based upon the source-term released by IPEN`s facilities in Pinheiros River during the year of 1988, three radionuclides were chosen as being the more critical, according to the radiation protection standards: {sup 137} Cs, {sup 60} Co and {sup 232} Th. Their K {alpha} were determined experimentally in laboratory by using the corresponding radioactive tracers {sup 134} Cs, {sup 60} Co and {sup 234} Th. Three different experimental methodologies were used: the static method, the shaken method and the dynamic method. The parameters studied were the effects of pH, aerobic condition and time of contact. The results obtained experimentally for the Kds confirm the predictions that: the cesium is slowly retained by the sediment along the Pinheiros River, the cobalt is an unstable element, therefore its retention by the sediment is affected by variations in the pH values, and finally, the thorium is almost completely retained in the vicinity of the discharge point. (author).}
place = {Brazil}
year = {1992}
month = {Dec}
}