31 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Noshkin, V. E."  
Results: 1 - 24 next
open access

Plutonium mobilization from sedimentary sources to solution in the marine environment

Description: Inventories of plutonium radionuclides greatly in excess of global fallout levels persists in the benthic environments of Bikini and Eniwetok Atolls. It now appears that the atolls have reached a chemical steadystate condition with respect to the partitioning of /sup 239 +240/Pu between solution and solid phases of the environment. The mobilized /sup 239 +240/Pu has solute-like characteristics, passes rapidly and readily through dialysis membranes, has adsorption characteristics similar to thos… more
Date: October 1, 1979
Creator: Noshkin, V.E. & Wong, K.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plutonium in the north equatorial Pacific

Description: The concentrations of plutonium in samples collected from the north equatorial region of the Pacific Ocean are presented. The results discussed in this abstract are preliminary, and some of the conclusions and descriptions of results may be revised after results from similar tests made by Woods Hole Oceanographic Institute are critically compared. An early exchange of these data is warranted because the results are directly related to the objectives of the workshop--to assess the processes, beh… more
Date: May 15, 1979
Creator: Noshkin, V.E. & Wong, K.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fine and coarse components in surface sediments from Bikini Lagoon

Description: In 1979, 21 years after the moratorium on nuclear testing in the Marshall Islands, surface sediment samples (to depths of 2 and 4 cm) were collected from 87 locations in the lagoon of Bikini Atoll, one of the two sites in the Marshall Islands used by the United States to test nuclear devices from 1946 through 1958. The main purpose for the collections was to map the distribution of long-lived man-made radionuclides associated with the bottom material. In addition the samples were processed to e… more
Date: January 1, 1997
Creator: Noshkin, V. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Problems associated with transuranium determination of suspended solids in seawater samples

Description: Particulate material collected by filtration from the north Equatorial Pacific Ocean has been analyzed for plutonium and other radionuclides. Different filter pore size, types of filter substrates, flow rates, and sample volumes were evaluated. Retention of /sup 239 +240/Pu was found to vary with the sample volume filtered and was not greatly affected by the type of filter substrate, flow rate, or porosity tested. About 7 +- 3% of the /sup 239 +240/Pu activity in north Equatorial Pacific surfac… more
Date: October 4, 1979
Creator: Wong, K. M.; Jokela, T. A. & Noshkin, V. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radionuclides in sediments from the northeast Atlantic disposal site

Description: The concentrations and inventories of /sup 239 +240/Pu in sediments from within the boundaries of the low-level radioactive waste-disposal site in the northeast Atlantic are not significantly different from global fallout levels expected in deep-sea sediments from this region of the Atlantic. No man-made gamma-emitting radionuclides were above detection limits in the sediment samples analyzed. Further, there is no indication that past disposal practices have led to an area-wide contamination of… more
Date: November 1, 1983
Creator: Noshkin, V. E.; Wong, K. M. & Eagle, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biogeochemical studies of long-lived radionuclides in marine environments

Description: Research results from several studies relevant to seabed dispoal of radioactive wastes are briefly discussed. The studies include: (1) mobilization of plutonium from Enewetak and Bikini lagoon sediments to seawater; (2) concentrations of /sup 90/Sr, /sup 137/Cs, /sup 239+240/Pu, /sup 241/Am, /sup 207/Bi and /sup 210/Pb-/sup 210/Bi-/sup 210/Po in fish from the Marshall Islands; and (3) plutonium in northeast Atlantic sediments. (ACR)
Date: January 1, 1985
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J. & Jokela, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detection of cadmium radioactivity in the marine environment

Description: Sediment and tissues from different marine organisms recently collected atolls of the Marshall Islands have been found to contain measurable amounts of /sup 113m/Cd previously deposited to the atolls during the testing of nuclear devices at the Pacific Proving Grounds. /sup 113m/Cd has been also detected in some internal organs of mullet collected from the east coast of the United States in an area contaminated only with global fallout debris. This is one of the few summaries to show that this … more
Date: December 1, 1980
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J. & Anglin, D. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sediment studies at Bikini Atoll part 3. Inventories of some long-lived gamma-emitting radionuclides associated with lagoon surface sediments

Description: Surface sediment samples were collected during 1979 from 87 locations in the lagoon at Bikini Atoll. The collections were made to better define the concentrations and distribution of long-lived radionuclides associated with the bottom material and to show what modifications occurred to the composition of the surface sediment from the nuclear testing program conducted by the United States at the Atoll between 1946 and 1958. This is the last of three reports on Bikini sediment studies. In this re… more
Date: December 1, 1997
Creator: Noshkin, V.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transuranic concentrations in reef and pelagic fish from the Marshall Islands. [/sup 239/Pu, /sup 240/Pu]

Description: Concentrations of /sup 239 + 240/Pu are reported in tissues of several species of reef and pelagic fish caught at 14 different atolls in the northern Marshall Islands. Several regularities that are species dependent are evident in the distribution of /sup 239 + 240/Pu among different body tissues. Concentrations in liver always exceeded those in bone and concentrations were lowest in the muscle of all fish analyzed. A progressive discrimination against /sup 239 + 240/Pu was observed at successi… more
Date: September 1, 1980
Creator: Noshkin, V. E.; Eagle, R. J.; Wong, K. M. & Jokela, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

References to Studies of 137Cs, 90Sr and 239+240Pu in the Pacific Ocean a Bibliography

Description: This report contains a listing of publications known to this author on reported concentrations, reviews and discussions of {sup 137}Cs, {sup 90}Sr and {sup 239+240}Pu in seawater, sediment and the biota from parts of the North and South Pacific Ocean. Each reference has been assigned an accession number consisting of the first three letters of the first author's last name followed by the first letter of the first name, the year of the publication and an assigned number. Studies in both the coas… more
Date: February 1, 2001
Creator: Noshkin, V.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transuranic radionuclides dispersed into the aquatic environment, a bibliography

Description: The purpose of this project was to compile a bibliography of references containing environmental transuranic radionuclide data. Our intent was to identify those parameters affecting transuranic radionuclide transport that may be generic and those that may be dependent on chemical form and/or environmental conditions (i.e., site specific) in terrestrial, aquatic and atmospheric environments An understanding of the unique characteristics and similarities between source terms and environmental con… more
Date: April 1, 1994
Creator: Noshkin, V. E.; Stoker, A. C. & Wong, Kai M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transuranic radionuclides from resuspension in the environment, a bibliography

Description: The purpose of this project was to compile a bibliography of references containing environmental transuranic radionuclide data. Our intent was to identify those parameters affecting transuranic radionuclide transport that may be generic and those that may be dependent on chemical form and/or environmental conditions. An understanding of the unique characteristics and similarities between source terms and environmental conditions relative to transuranic radionuclide transport and cycling will pr… more
Date: April 1, 1994
Creator: Stoker, A. C.; Shinn, J. H. & Noshkin, V. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiochemical procedures for analysis of Pu, Am, Cs and Sr in water, soil, sediments and biota samples

Description: The Environmental Radioactivity Analysis Laboratory (ERAL) was established as an analytical facility. The primary function of ERAL is to provide fast and accurate radiological data of environmental samples. Over the years, many radiochemical procedures have been developed by the staffs of ERAL. As result, we have found that our procedures exist in many different formats and in many different notebooks, documents and files. Therefore, in order to provide for more complete and orderly documentati… more
Date: February 1, 1994
Creator: Wong, K. M.; Jokela, T. A. & Noshkin, V. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transuranic radionuclides dispersed into the environment at accident sites, a bibliography

Description: The purpose of this project was to compile a bibliography of references containing environmental transuranic radionuclide data. The authors intent was to identify those parameters affecting transuranic radionuclide transport that may be generic and those that may be dependent on chemical form and/or environmental conditions. An understanding of the unique characteristics and similarities between source terms and environmental conditions relative to transuranic radionuclide transport and cycling… more
Date: July 1, 1994
Creator: Stoker, A. C.; Noshkin, V. E. & Wong, K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments

Description: In 1979, 21 years after the moratorium on nuclear testing in the Marshall Islands, surface sediment samples (to depths of 2 and 4 cm) were collected from 87 locations over the floor of Bikini lagoon. The main purpose for the collections was to map the distribution of long- lived man-made radionuclides associated with the bottom material. In addition the samples were processed to estimate the fraction of fine and coarse components to show what modifications occurred since the sediment compositio… more
Date: January 1, 1997
Creator: Noshkin, V. E.; Eagle, R. J. & Robison, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental radiological studies downstream from the Rancho Seco Nuclear Power Generating Station - 1985. Appendices. Part II

Description: Eight appendices address the following concentrations of radionuclides: in fish; in frog legs; in crayfish; in sediments; in soil samples; in surface and ground water samples; in water hyacinths; and in beef samples.
Date: January 23, 1986
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J.; Brunk, J. L. & Jokela, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental radiological studies downstream from the Rancho Seco Nuclear Power Generating Station, 1985

Description: Information compiled in 1985 while assessing the environmental impact of radionuclides previously discharged with aqueous releases from the Rancho Seco Nuclear Power Generating Plant is presented. In October 1984, the quantities of gamma-emitting radionuclides in water discharged to Clay Creek from the plant were reduced below operationally defined detection limits for liquid effluents. However, radionuclides previously discharged persist in the downstream environment and are found in many aqua… more
Date: February 6, 1986
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J.; Brunk, J. L. & Jokela, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Concentrations of radionuclides in fish collected from Bikini Atoll between 1977 and 1984

Description: This report summarizes all available data on the concentrations of radionuclides in fish from Bikini Atoll between 1977 and 1984. As found in other global studies, /sup 137/Cs is most highly accumulated in edible flesh of all species of fish, the lowest fractions are found in the bone or liver. The mean concentration of /sup 137/Cs in muscle of reef fish from the southern part of the atoll is comparable to the global fallout concentration measured in market samples of fish collected from Chicag… more
Date: July 1, 1986
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J.; Jokela, T. A. & Brunk, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental radiological studies conducted during 1986 in the vicinity of the Rancho Seco Nuclear Power Generating Station

Description: This report summarizes the information compiled in 1986 for our assessment of the environmental impact of radionuclides discharged with aqueous releases from the Rancho Seco Nuclear Power Generating Plant. In October 1984, a liquid-effluent control program was initiated that significantly reduced the quantities of radionuclides discharged with liquid waste from the plant. However, results from our sampling program in 1986 indicate that previously discharged radionuclides persist in the downstre… more
Date: March 1, 1987
Creator: Noshkin, V. E.; Wong, K. M.; Eagle, R. J.; Brunk, J. L. & Jokela, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative behavior of plutonium and americium in the equatorial Pacific

Description: Inventories of /sup 239 +240/Pu and /sup 241/Am greatly in excess of global fallout levels persist in the benthic environments of Bikini and Enewetak Atolls. The amount of /sup 239 +240/Pu mobilized to solution at the atolls can be predicted from a distribution coefficient K/sub d/ of 2.3 x 10/sup 5/ and the mean sediment concentrations. The mobilized /sup 239 +240/Pu has solute-like characteristics and different valence states coexist in solution - the largest fraction of the soluble plutonium… more
Date: January 1, 1983
Creator: Noshkin, V. E.; Wong, K. M.; Jokela, T. A.; Brunk, J. L. & Eagle, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radionuclide characterization and associated dose from long-lived radionuclides in close-in fallout delivered to the marine environment at Bikini and Enewetak Atoll

Description: Between June 1946 and October 1958, Enewetak and Bikini Atolls were used by the United States as testing grounds for 66 nuclear devices. The combined explosive yield from these tests was 107 Mt (Mt TNT equivalents). This testing produced close-in fallout debris that was contaminated with quantities of radioactive fission and particle activated products, and unspent radioactive nuclear fuel that entered the aquatic environment of the atolls. Today, the sediments in the lagoons are reservoirs for… more
Date: September 1, 1998
Creator: Noshkin, V. E. & Robison, W. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen