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Title: Study on vertical distribution of radionuclides ({sup 40}K, Th and U) in soil collected from Manjung district

The accumulation of radionuclides in soil is a greatest concerns due to their toxicity. This study investigated the vertical distribution of radionuclides and radiological assessment in a soil profile were collected in three different directions [North (N), North-East (NE) and South-East (SE)] within 40 km from Manjung district. All profile samples were collected down to 45cm at 7.5cm interval using hand auger. Soil density and radionuclides ({sup 40}K, Th and U) concentrations were determined by gravimetric method and Energy Dispersive X-Ray Fluorescence (EDXRF) technique, respectively. The radionuclides concentrations was in decreasing order of {sup 40}K > Th > U. Soil quality assessment was carried out using Enrichment Factor (EF), Pollution Index (PI) and Geoaccumulation Index (I {sub geo}) where all radionuclides show significant enrichment (5 < EF < 20), PI classified as middle pollution classes and 0 < Igeo < 1, indicating moderately polluted, respectively. From the concentration of radionuclides, the radiological risk was calculated and the present result show external hazard index (H{sub ex}) is below than unity indicate low radiological risk.
Authors:
; ;  [1] ;  [1] ;  [2] ;  [3]
  1. Faculty of Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor (Malaysia)
  2. (Malaysia)
  3. TNB Research Sdn. Bhd. 43000 Kajang, Selangor (Malaysia)
Publication Date:
OSTI Identifier:
22494558
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1704; Journal Issue: 1; Conference: iNuSTEC2015: International muclear science, technology and engineering conference 2015, Negeri Sembilan (Malaysia), 17-19 Aug 2015; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BUILDUP; DENSITY; DISTRIBUTION; ENRICHMENT; FLUORESCENCE; HAZARDS; POLLUTION; POTASSIUM 40; SOILS; TOXICITY; X RADIATION; X-RAY FLUORESCENCE ANALYSIS