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Center of Excellence in Environmental Studies
Document Details
Document Type
:
Article In Journal
Document Title
:
Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers
النشاط الإشعاعي الطبيعي وانبعاثات الرادون في الأسمدة الفوسفاتية
Subject
:
Enviromental sciences
Document Language
:
English
Abstract
:
238U, 232Th, 226Ra,222 Rn and 40K activity concentrations in fertilizer samples collected from a local market were determined. Radon activity concentrations ranged from 0.04–252 Bq kg−1 and were comparablewith lowactivity concentrations ranges reported previously. Radon exhalation rates and effective 226Ra concentration were determined using CR-39 solid-state nuclear track detectors. Effective 226Ra concentrations ranged from 4.27–33.93 Bq kg−1. Two different 222Rn exhalation rates were determined; area dependent exhalation rates (0.044–0.351 Bq m−2 h−1) and mass dependent exhalation rates (0.023–0.180) Bq kg−1 h−1). Even without secular equilibrium, strong correlations were generally apparent among uranium concentrations, effective 226Ra concentrations and 222Rn exhalation rates in samples with high concentrations of uranium. 232Th and 40K concentrations ranged from 0–44.6 and 0.08–127 μg/g, respectively.
ISSN
:
1319-8025
Journal Name
:
Arabian Journal for Science and Engineering
Volume
:
37
Issue Number
:
1
Publishing Year
:
1433 AH
2012 AD
Article Type
:
Article
Added Date
:
Sunday, September 16, 2012
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد كادي
Kadi, Mohammad W.
Researcher
mkadi@kau.edu.sa
ذياب العرياني
Al-Eryani, Dheyab A.
Researcher
Files
File Name
Type
Description
37325.PDF
PDF
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