An inventory on the distribution of radium concentrations in seawater and sediment along the Indian coast

In-situ pre-concentration technique using MnO 2 filter cartridge adapted for radium isotopes measurement in seawater. Natural variability was observed and data subjected to statistical analysis. Seawater and sediment concentration was observed lognormal and evaluated geometric mean for 226 Ra was 2.9 Bqm −3 and 1.7 Bqm −3 and 228 Ra was 5.8 Bqm −3 and 4.6 Bqm −3 in seawater along west and east coast respectively. For sediment 226 Ra GM was 12.5 Bqkg −1 and 30.0 Bqkg −1 and 228 Ra was 21.7 Bqkg −1 and 62.0 Bqkg −1 along west and east coast respectively. Estimated environmental increment could be used as screening levels for assessing impact on the environment.