239+240Pu, 90Sr and 137Cs inventories in surface soils of Vietnam

Fallout 239+240Pu, 238Pu, 90Sr and 137Cs inventories in surface soils were measured for 20 locations in northern Vietnam yielding the mean values (± standard error) of 26.5±3.8 Bq m −2 for 239+240Pu, 1048±143 Bq m −2 for 137Cs and 212±28 Bq m −2 for 90Sr. The concentrations of 137Cs and plutonium is...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of environmental radioactivity Vol. 75; no. 3; pp. 329 - 337
Main Authors:	Quang, N.H., Long, N.Q., Lieu, D.B., Mai, T.T., Ha, N.T., Nhan, D.D., Hien, P.D.
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier Ltd 2004 Elsevier
Subjects:	Applied sciences Correlation Depth distribution Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental Monitoring Exact sciences and technology Fallout isotopes inventory ratio Pollution Pollution sources. Measurement results Pollution, environment geology Radioactive Fallout - analysis Radioisotopes - analysis Soil and sediments pollution Soil characteristics Soil Pollutants, Radioactive - analysis Vietnam Asia East China Sea Vietnam Soil characteristics Fallout isotopes inventory ratio Correlation Depth distribution Littoral zone Cesium 137 Organic matter Radioactive pollution Atmospheric fallout Pollutant behavior Strontium 90 Property of soil Radioisotope Soil pollution Radioactivity measurement Transport process Correlation analysis Depth profile Rain water Percolation Fulvic acid Plutonium
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Fallout 239+240Pu, 238Pu, 90Sr and 137Cs inventories in surface soils were measured for 20 locations in northern Vietnam yielding the mean values (± standard error) of 26.5±3.8 Bq m −2 for 239+240Pu, 1048±143 Bq m −2 for 137Cs and 212±28 Bq m −2 for 90Sr. The concentrations of 137Cs and plutonium isotopes strongly correlate with each other resulting in a stable 239+240Pu/ 137Cs inventory ratio of 0.025±0.002. Among soil parameters, organic matter and fulvic acids strongly correlate with caesium and plutonium isotopes, especially in the 0–10 cm layer. 137Cs and 239+240Pu are distributed rather similarly over the 0–10 cm and 10–20 cm layers. At locations with high contents of sand (82–93%) along the South China Sea coast, the downward percolation by rainwater results in a higher accumulation of 239+240Pu and 137Cs in the 10–20 cm layer. The mean 137Cs/ 90Sr inventory ratio is 9.3±2.2, and the correlation is weak between these isotopes.
ISSN:	0265-931X 1879-1700
DOI:	10.1016/j.jenvrad.2003.12.009